April 2020 - Linux-stable-mirror

[char-misc] mei: me: disable mei interface on LBG servers.

by Tomas Winkler

Disable the MEI driver on LBG SPS (server) platforms, some corner flows such as recovery mode does not work, and the driver doesn't have working use cases. Cc: <stable(a)vger.kernel.org> Signed-off-by: Tomas Winkler <tomas.winkler(a)intel.com> --- drivers/misc/mei/hw-me.c | 8 ++++++++ drivers/misc/mei/hw-me.h | 4 ++++ drivers/misc/mei/pci-me.c | 2 +- 3 files changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 668418d7ea77..f620442addf5 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -1465,6 +1465,13 @@ static const struct mei_cfg mei_me_pch12_cfg = { MEI_CFG_DMA_128, }; +/* LBG with quirk for SPS Firmware exclusion */ +static const struct mei_cfg mei_me_pch12_sps_cfg = { + MEI_CFG_PCH8_HFS, + MEI_CFG_FW_VER_SUPP, + MEI_CFG_FW_SPS, +}; + /* Tiger Lake and newer devices */ static const struct mei_cfg mei_me_pch15_cfg = { MEI_CFG_PCH8_HFS, @@ -1487,6 +1494,7 @@ static const struct mei_cfg *const mei_cfg_list[] = { [MEI_ME_PCH8_CFG] = &mei_me_pch8_cfg, [MEI_ME_PCH8_SPS_CFG] = &mei_me_pch8_sps_cfg, [MEI_ME_PCH12_CFG] = &mei_me_pch12_cfg, + [MEI_ME_PCH12_SPS_CFG] = &mei_me_pch12_sps_cfg, [MEI_ME_PCH15_CFG] = &mei_me_pch15_cfg, }; diff --git a/drivers/misc/mei/hw-me.h b/drivers/misc/mei/hw-me.h index 4a8d4dcd5a91..b6b94e211464 100644 --- a/drivers/misc/mei/hw-me.h +++ b/drivers/misc/mei/hw-me.h @@ -80,6 +80,9 @@ struct mei_me_hw { * servers platforms with quirk for * SPS firmware exclusion. * @MEI_ME_PCH12_CFG: Platform Controller Hub Gen12 and newer + * @MEI_ME_PCH12_SPS_CFG: Platform Controller Hub Gen12 and newer + * servers platforms with quirk for + * SPS firmware exclusion. * @MEI_ME_PCH15_CFG: Platform Controller Hub Gen15 and newer * @MEI_ME_NUM_CFG: Upper Sentinel. */ @@ -93,6 +96,7 @@ enum mei_cfg_idx { MEI_ME_PCH8_CFG, MEI_ME_PCH8_SPS_CFG, MEI_ME_PCH12_CFG, + MEI_ME_PCH12_SPS_CFG, MEI_ME_PCH15_CFG, MEI_ME_NUM_CFG, }; diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index 3d21c38e2dbb..d4899a430e9d 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -70,7 +70,7 @@ static const struct pci_device_id mei_me_pci_tbl[] = { {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_2, MEI_ME_PCH8_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H, MEI_ME_PCH8_SPS_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H_2, MEI_ME_PCH8_SPS_CFG)}, - {MEI_PCI_DEVICE(MEI_DEV_ID_LBG, MEI_ME_PCH12_CFG)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_LBG, MEI_ME_PCH12_SPS_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, MEI_ME_PCH8_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, MEI_ME_PCH8_CFG)}, -- 2.21.1

4 years

2
1
0 0

[PATCH 1/2] drm/i915/execlists: Avoid reusing the same logical CCID

by Chris Wilson

The bspec is confusing on the nature of the upper 32bits of the LRC descriptor. Once upon a time, it said that it uses the upper 32b to decide if it should perform a lite-restore, and so we must ensure that each unique context submitted to HW is given a unique CCID [for the duration of it being on the HW]. Currently, this is achieved by using a small circular tag, and assigning every context submitted to HW a new id. However, this tag is being cleared on repinning an inflight context such that we end up re-using the 0 tag for multiple contexts. To avoid accidentally clearing the CCID in the upper 32bits of the LRC descriptor, split the descriptor into two dwords so we can update the GGTT address separately from the CCID. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/1796 Fixes: 2935ed5339c4 ("drm/i915: Remove logical HW ID") Signed-off-by: Chris Wilson <chris(a)chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # v5.5+ --- drivers/gpu/drm/i915/gt/intel_context_types.h | 8 ++- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 4 +- drivers/gpu/drm/i915/gt/intel_engine_types.h | 5 ++ drivers/gpu/drm/i915/gt/intel_lrc.c | 57 ++++++++----------- .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 2 +- drivers/gpu/drm/i915/gvt/scheduler.c | 4 +- drivers/gpu/drm/i915/i915_perf.c | 3 +- 7 files changed, 43 insertions(+), 40 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_context_types.h b/drivers/gpu/drm/i915/gt/intel_context_types.h index e0da7bdcbf01..4954b0df4864 100644 --- a/drivers/gpu/drm/i915/gt/intel_context_types.h +++ b/drivers/gpu/drm/i915/gt/intel_context_types.h @@ -69,7 +69,13 @@ struct intel_context { #define CONTEXT_NOPREEMPT 7 u32 *lrc_reg_state; - u64 lrc_desc; + union { + struct { + u32 lrca; + u32 ccid; + }; + u64 desc; + } lrc; u32 tag; /* cookie passed to HW to track this context on submission */ /* Time on GPU as tracked by the hw. */ diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index b1f8527f02c8..7c3cb5aedfdf 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -1425,7 +1425,7 @@ static void intel_engine_print_registers(struct intel_engine_cs *engine, len = scnprintf(hdr, sizeof(hdr), "\t\tActive[%d]: ccid:%08x, ", (int)(port - execlists->active), - upper_32_bits(rq->context->lrc_desc)); + rq->context->lrc.ccid); len += print_ring(hdr + len, sizeof(hdr) - len, rq); scnprintf(hdr + len, sizeof(hdr) - len, "rq: "); print_request(m, rq, hdr); @@ -1437,7 +1437,7 @@ static void intel_engine_print_registers(struct intel_engine_cs *engine, len = scnprintf(hdr, sizeof(hdr), "\t\tPending[%d]: ccid:%08x, ", (int)(port - execlists->pending), - upper_32_bits(rq->context->lrc_desc)); + rq->context->lrc.ccid); len += print_ring(hdr + len, sizeof(hdr) - len, rq); scnprintf(hdr + len, sizeof(hdr) - len, "rq: "); print_request(m, rq, hdr); diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h index bf395227c99f..470bdc73220a 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h @@ -156,6 +156,11 @@ struct intel_engine_execlists { */ struct i915_priolist default_priolist; + /** + * @ccid: identifier for contexts submitted to this engine + */ + u32 ccid; + /** * @yield: CCID at the time of the last semaphore-wait interrupt. * diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 93a1b73ad96b..7d56207276d5 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -573,10 +573,10 @@ assert_priority_queue(const struct i915_request *prev, * engine info, SW context ID and SW counter need to form a unique number * (Context ID) per lrc. */ -static u64 +static u32 lrc_descriptor(struct intel_context *ce, struct intel_engine_cs *engine) { - u64 desc; + u32 desc; desc = INTEL_LEGACY_32B_CONTEXT; if (i915_vm_is_4lvl(ce->vm)) @@ -587,21 +587,7 @@ lrc_descriptor(struct intel_context *ce, struct intel_engine_cs *engine) if (IS_GEN(engine->i915, 8)) desc |= GEN8_CTX_L3LLC_COHERENT; - desc |= i915_ggtt_offset(ce->state); /* bits 12-31 */ - /* - * The following 32bits are copied into the OA reports (dword 2). - * Consider updating oa_get_render_ctx_id in i915_perf.c when changing - * anything below. - */ - if (INTEL_GEN(engine->i915) >= 11) { - desc |= (u64)engine->instance << GEN11_ENGINE_INSTANCE_SHIFT; - /* bits 48-53 */ - - desc |= (u64)engine->class << GEN11_ENGINE_CLASS_SHIFT; - /* bits 61-63 */ - } - - return desc; + return i915_ggtt_offset(ce->state) | desc; } static inline unsigned int dword_in_page(void *addr) @@ -1353,7 +1339,7 @@ static void reset_active(struct i915_request *rq, __execlists_update_reg_state(ce, engine, head); /* We've switched away, so this should be a no-op, but intent matters */ - ce->lrc_desc |= CTX_DESC_FORCE_RESTORE; + ce->lrc.desc |= CTX_DESC_FORCE_RESTORE; } static void st_update_runtime_underflow(struct intel_context *ce, s32 dt) @@ -1401,18 +1387,19 @@ __execlists_schedule_in(struct i915_request *rq) if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)) execlists_check_context(ce, engine); - ce->lrc_desc &= ~GENMASK_ULL(47, 37); if (ce->tag) { /* Use a fixed tag for OA and friends */ - ce->lrc_desc |= (u64)ce->tag << 32; + ce->lrc.ccid = ce->tag; } else { /* We don't need a strict matching tag, just different values */ - ce->lrc_desc |= - (u64)(++engine->context_tag % NUM_CONTEXT_TAG) << - GEN11_SW_CTX_ID_SHIFT; + ce->lrc.ccid = + (++engine->context_tag % NUM_CONTEXT_TAG) << + (GEN11_SW_CTX_ID_SHIFT - 32); BUILD_BUG_ON(NUM_CONTEXT_TAG > GEN12_MAX_CONTEXT_HW_ID); } + ce->lrc.ccid |= engine->execlists.ccid; + __intel_gt_pm_get(engine->gt); execlists_context_status_change(rq, INTEL_CONTEXT_SCHEDULE_IN); intel_engine_context_in(engine); @@ -1511,7 +1498,7 @@ execlists_schedule_out(struct i915_request *rq) static u64 execlists_update_context(struct i915_request *rq) { struct intel_context *ce = rq->context; - u64 desc = ce->lrc_desc; + u64 desc = ce->lrc.desc; u32 tail, prev; /* @@ -1550,7 +1537,7 @@ static u64 execlists_update_context(struct i915_request *rq) */ wmb(); - ce->lrc_desc &= ~CTX_DESC_FORCE_RESTORE; + ce->lrc.desc &= ~CTX_DESC_FORCE_RESTORE; return desc; } @@ -1571,8 +1558,9 @@ dump_port(char *buf, int buflen, const char *prefix, struct i915_request *rq) if (!rq) return ""; - snprintf(buf, buflen, "%s%llx:%lld%s prio %d", + snprintf(buf, buflen, "%sccid:%x %llx:%lld%s prio %d", prefix, + rq->context->lrc.ccid, rq->fence.context, rq->fence.seqno, i915_request_completed(rq) ? "!" : i915_request_started(rq) ? "*" : @@ -1948,7 +1936,7 @@ timeslice_yield(const struct intel_engine_execlists *el, * safe, yield if it might be stuck -- it will be given a fresh * timeslice in the near future. */ - return upper_32_bits(rq->context->lrc_desc) == READ_ONCE(el->yield); + return rq->context->lrc.ccid == READ_ONCE(el->yield); } static bool @@ -2975,7 +2963,7 @@ active_context(struct intel_engine_cs *engine, u32 ccid) */ for (port = el->active; (rq = *port); port++) { - if (upper_32_bits(rq->context->lrc_desc) == ccid) { + if (rq->context->lrc.ccid == ccid) { ENGINE_TRACE(engine, "ccid found at active:%zd\n", port - el->active); @@ -2984,7 +2972,7 @@ active_context(struct intel_engine_cs *engine, u32 ccid) } for (port = el->pending; (rq = *port); port++) { - if (upper_32_bits(rq->context->lrc_desc) == ccid) { + if (rq->context->lrc.ccid == ccid) { ENGINE_TRACE(engine, "ccid found at pending:%zd\n", port - el->pending); @@ -3444,7 +3432,7 @@ __execlists_context_pin(struct intel_context *ce, if (IS_ERR(vaddr)) return PTR_ERR(vaddr); - ce->lrc_desc = lrc_descriptor(ce, engine) | CTX_DESC_FORCE_RESTORE; + ce->lrc.lrca = lrc_descriptor(ce, engine) | CTX_DESC_FORCE_RESTORE; ce->lrc_reg_state = vaddr + LRC_STATE_OFFSET; __execlists_update_reg_state(ce, engine, ce->ring->tail); @@ -3473,7 +3461,7 @@ static void execlists_context_reset(struct intel_context *ce) ce, ce->engine, ce->ring, true); __execlists_update_reg_state(ce, ce->engine, ce->ring->tail); - ce->lrc_desc |= CTX_DESC_FORCE_RESTORE; + ce->lrc.desc |= CTX_DESC_FORCE_RESTORE; } static const struct intel_context_ops execlists_context_ops = { @@ -4184,7 +4172,7 @@ static void __execlists_reset(struct intel_engine_cs *engine, bool stalled) head, ce->ring->tail); __execlists_reset_reg_state(ce, engine); __execlists_update_reg_state(ce, engine, head); - ce->lrc_desc |= CTX_DESC_FORCE_RESTORE; /* paranoid: GPU was reset! */ + ce->lrc.desc |= CTX_DESC_FORCE_RESTORE; /* paranoid: GPU was reset! */ unwind: /* Push back any incomplete requests for replay after the reset. */ @@ -4950,6 +4938,11 @@ int intel_execlists_submission_setup(struct intel_engine_cs *engine) else execlists->csb_size = GEN11_CSB_ENTRIES; + if (INTEL_GEN(engine->i915) >= 11) { + execlists->ccid |= engine->instance << (GEN11_ENGINE_INSTANCE_SHIFT - 32); + execlists->ccid |= engine->class << (GEN11_ENGINE_CLASS_SHIFT - 32); + } + /* Finally, take ownership and responsibility for cleanup! */ engine->sanitize = execlists_sanitize; engine->release = execlists_release; diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c index fe7778c28d2d..aa6d56e25a10 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c @@ -217,7 +217,7 @@ static void guc_wq_item_append(struct intel_guc *guc, static void guc_add_request(struct intel_guc *guc, struct i915_request *rq) { struct intel_engine_cs *engine = rq->engine; - u32 ctx_desc = lower_32_bits(rq->context->lrc_desc); + u32 ctx_desc = rq->context->lrc.ccid; u32 ring_tail = intel_ring_set_tail(rq->ring, rq->tail) / sizeof(u64); guc_wq_item_append(guc, engine->guc_id, ctx_desc, diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c index 2f5c59111821..38234073e0fc 100644 --- a/drivers/gpu/drm/i915/gvt/scheduler.c +++ b/drivers/gpu/drm/i915/gvt/scheduler.c @@ -290,7 +290,7 @@ static void shadow_context_descriptor_update(struct intel_context *ce, struct intel_vgpu_workload *workload) { - u64 desc = ce->lrc_desc; + u64 desc = ce->lrc.desc; /* * Update bits 0-11 of the context descriptor which includes flags @@ -300,7 +300,7 @@ shadow_context_descriptor_update(struct intel_context *ce, desc |= (u64)workload->ctx_desc.addressing_mode << GEN8_CTX_ADDRESSING_MODE_SHIFT; - ce->lrc_desc = desc; + ce->lrc.desc = desc; } static int copy_workload_to_ring_buffer(struct intel_vgpu_workload *workload) diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index dec1b33e4da8..04ad21960688 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -1263,8 +1263,7 @@ static int oa_get_render_ctx_id(struct i915_perf_stream *stream) * dropped by GuC. They won't be part of the context * ID in the OA reports, so squash those lower bits. */ - stream->specific_ctx_id = - lower_32_bits(ce->lrc_desc) >> 12; + stream->specific_ctx_id = ce->lrc.lrca >> 12; /* * GuC uses the top bit to signal proxy submission, so -- 2.20.1

4 years

2
1
0 0

[PATCH 1/1] drm/dp_mst: Kill the second sideband tx slot, save the world

by Lyude Paul

While we support using both tx slots for sideband transmissions, it appears that DisplayPort devices in the field didn't end up doing a very good job of supporting it. From section 5.2.1 of the DP 2.0 specification: There are MST Sink/Branch devices in the field that do not handle interleaved message transactions. To facilitate message transaction handling by downstream devices, an MST Source device shall generate message transactions in an atomic manner (i.e., the MST Source device shall not concurrently interleave multiple message transactions). Therefore, an MST Source device shall clear the Message_Sequence_No value in the Sideband_MSG_Header to 0. This might come as a bit of a surprise since the vast majority of hubs will support using both tx slots even if they don't support interleaved message transactions, and we've also been using both tx slots since MST was introduced into the kernel. However, there is one device we've had trouble getting working consistently with MST for so long that we actually assumed it was just broken: the infamous Dell P2415Qb. Previously this monitor would appear to work sometimes, but in most situations would end up timing out LINK_ADDRESS messages almost at random until you power cycled the whole display. After reading section 5.2.1 in the DP 2.0 spec, some closer investigation into this infamous display revealed it was only ever timing out on sideband messages in the second TX slot. Sure enough, avoiding the second TX slot has suddenly made this monitor function perfectly for the first time in five years. And since they explicitly mention this in the specification, I doubt this is the only monitor out there with this issue. This might even explain explain the seemingly harmless garbage sideband responses we would occasionally see with MST hubs! So - rewrite our sideband TX handlers to only support one TX slot. In order to simplify our sideband handling now that we don't support transmitting to multiple MSTBs at once, we also move all state tracking for down replies from mstbs to the topology manager. Signed-off-by: Lyude Paul <lyude(a)redhat.com> Fixes: ad7f8a1f9ced ("drm/helper: add Displayport multi-stream helper (v0.6)") Cc: Sean Paul <sean(a)poorly.run> Cc: "Lin, Wayne" <Wayne.Lin(a)amd.com> Cc: <stable(a)vger.kernel.org> # v3.17+ Reviewed-by: Sean Paul <sean(a)poorly.run> Link: https://patchwork.freedesktop.org/patch/msgid/20200424181308.770749-1-lyude… --- drivers/gpu/drm/drm_dp_mst_topology.c | 122 +++++++------------------- include/drm/drm_dp_mst_helper.h | 18 +--- 2 files changed, 33 insertions(+), 107 deletions(-) diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 9d89ebf3a749..ed6faaf4bbf3 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -1203,16 +1203,8 @@ static int drm_dp_mst_wait_tx_reply(struct drm_dp_mst_branch *mstb, /* remove from q */ if (txmsg->state == DRM_DP_SIDEBAND_TX_QUEUED || - txmsg->state == DRM_DP_SIDEBAND_TX_START_SEND) { + txmsg->state == DRM_DP_SIDEBAND_TX_START_SEND) list_del(&txmsg->next); - } - - if (txmsg->state == DRM_DP_SIDEBAND_TX_START_SEND || - txmsg->state == DRM_DP_SIDEBAND_TX_SENT) { - mstb->tx_slots[txmsg->seqno] = NULL; - } - mgr->is_waiting_for_dwn_reply = false; - } out: if (unlikely(ret == -EIO) && drm_debug_enabled(DRM_UT_DP)) { @@ -2691,22 +2683,6 @@ static int set_hdr_from_dst_qlock(struct drm_dp_sideband_msg_hdr *hdr, struct drm_dp_mst_branch *mstb = txmsg->dst; u8 req_type; - /* both msg slots are full */ - if (txmsg->seqno == -1) { - if (mstb->tx_slots[0] && mstb->tx_slots[1]) { - DRM_DEBUG_KMS("%s: failed to find slot\n", __func__); - return -EAGAIN; - } - if (mstb->tx_slots[0] == NULL && mstb->tx_slots[1] == NULL) { - txmsg->seqno = mstb->last_seqno; - mstb->last_seqno ^= 1; - } else if (mstb->tx_slots[0] == NULL) - txmsg->seqno = 0; - else - txmsg->seqno = 1; - mstb->tx_slots[txmsg->seqno] = txmsg; - } - req_type = txmsg->msg[0] & 0x7f; if (req_type == DP_CONNECTION_STATUS_NOTIFY || req_type == DP_RESOURCE_STATUS_NOTIFY) @@ -2718,7 +2694,7 @@ static int set_hdr_from_dst_qlock(struct drm_dp_sideband_msg_hdr *hdr, hdr->lcr = mstb->lct - 1; if (mstb->lct > 1) memcpy(hdr->rad, mstb->rad, mstb->lct / 2); - hdr->seqno = txmsg->seqno; + return 0; } /* @@ -2733,15 +2709,15 @@ static int process_single_tx_qlock(struct drm_dp_mst_topology_mgr *mgr, int len, space, idx, tosend; int ret; + if (txmsg->state == DRM_DP_SIDEBAND_TX_SENT) + return 0; + memset(&hdr, 0, sizeof(struct drm_dp_sideband_msg_hdr)); - if (txmsg->state == DRM_DP_SIDEBAND_TX_QUEUED) { - txmsg->seqno = -1; + if (txmsg->state == DRM_DP_SIDEBAND_TX_QUEUED) txmsg->state = DRM_DP_SIDEBAND_TX_START_SEND; - } - /* make hdr from dst mst - for replies use seqno - otherwise assign one */ + /* make hdr from dst mst */ ret = set_hdr_from_dst_qlock(&hdr, txmsg); if (ret < 0) return ret; @@ -2794,42 +2770,17 @@ static void process_single_down_tx_qlock(struct drm_dp_mst_topology_mgr *mgr) if (list_empty(&mgr->tx_msg_downq)) return; - txmsg = list_first_entry(&mgr->tx_msg_downq, struct drm_dp_sideband_msg_tx, next); + txmsg = list_first_entry(&mgr->tx_msg_downq, + struct drm_dp_sideband_msg_tx, next); ret = process_single_tx_qlock(mgr, txmsg, false); - if (ret == 1) { - /* txmsg is sent it should be in the slots now */ - mgr->is_waiting_for_dwn_reply = true; - list_del(&txmsg->next); - } else if (ret) { + if (ret < 0) { DRM_DEBUG_KMS("failed to send msg in q %d\n", ret); - mgr->is_waiting_for_dwn_reply = false; list_del(&txmsg->next); - if (txmsg->seqno != -1) - txmsg->dst->tx_slots[txmsg->seqno] = NULL; txmsg->state = DRM_DP_SIDEBAND_TX_TIMEOUT; wake_up_all(&mgr->tx_waitq); } } -/* called holding qlock */ -static void process_single_up_tx_qlock(struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_sideband_msg_tx *txmsg) -{ - int ret; - - /* construct a chunk from the first msg in the tx_msg queue */ - ret = process_single_tx_qlock(mgr, txmsg, true); - - if (ret != 1) - DRM_DEBUG_KMS("failed to send msg in q %d\n", ret); - - if (txmsg->seqno != -1) { - WARN_ON((unsigned int)txmsg->seqno > - ARRAY_SIZE(txmsg->dst->tx_slots)); - txmsg->dst->tx_slots[txmsg->seqno] = NULL; - } -} - static void drm_dp_queue_down_tx(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_sideband_msg_tx *txmsg) { @@ -2842,8 +2793,7 @@ static void drm_dp_queue_down_tx(struct drm_dp_mst_topology_mgr *mgr, drm_dp_mst_dump_sideband_msg_tx(&p, txmsg); } - if (list_is_singular(&mgr->tx_msg_downq) && - !mgr->is_waiting_for_dwn_reply) + if (list_is_singular(&mgr->tx_msg_downq)) process_single_down_tx_qlock(mgr); mutex_unlock(&mgr->qlock); } @@ -3467,7 +3417,7 @@ static int drm_dp_encode_up_ack_reply(struct drm_dp_sideband_msg_tx *msg, u8 req static int drm_dp_send_up_ack_reply(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_branch *mstb, - int req_type, int seqno, bool broadcast) + int req_type, bool broadcast) { struct drm_dp_sideband_msg_tx *txmsg; @@ -3476,13 +3426,11 @@ static int drm_dp_send_up_ack_reply(struct drm_dp_mst_topology_mgr *mgr, return -ENOMEM; txmsg->dst = mstb; - txmsg->seqno = seqno; drm_dp_encode_up_ack_reply(txmsg, req_type); mutex_lock(&mgr->qlock); - - process_single_up_tx_qlock(mgr, txmsg); - + /* construct a chunk from the first msg in the tx_msg queue */ + process_single_tx_qlock(mgr, txmsg, true); mutex_unlock(&mgr->qlock); kfree(txmsg); @@ -3707,7 +3655,8 @@ int drm_dp_mst_topology_mgr_resume(struct drm_dp_mst_topology_mgr *mgr, } EXPORT_SYMBOL(drm_dp_mst_topology_mgr_resume); -static bool drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, bool up) +static bool drm_dp_get_one_sb_msg(struct drm_dp_mst_topology_mgr *mgr, + bool up) { int len; u8 replyblock[32]; @@ -3760,7 +3709,6 @@ static int drm_dp_mst_handle_down_rep(struct drm_dp_mst_topology_mgr *mgr) struct drm_dp_sideband_msg_tx *txmsg; struct drm_dp_mst_branch *mstb; struct drm_dp_sideband_msg_hdr *hdr = &mgr->down_rep_recv.initial_hdr; - int slot = -1; if (!drm_dp_get_one_sb_msg(mgr, false)) goto clear_down_rep_recv; @@ -3776,10 +3724,9 @@ static int drm_dp_mst_handle_down_rep(struct drm_dp_mst_topology_mgr *mgr) } /* find the message */ - slot = hdr->seqno; mutex_lock(&mgr->qlock); - txmsg = mstb->tx_slots[slot]; - /* remove from slots */ + txmsg = list_first_entry_or_null(&mgr->tx_msg_downq, + struct drm_dp_sideband_msg_tx, next); mutex_unlock(&mgr->qlock); if (!txmsg) { @@ -3804,8 +3751,7 @@ static int drm_dp_mst_handle_down_rep(struct drm_dp_mst_topology_mgr *mgr) mutex_lock(&mgr->qlock); txmsg->state = DRM_DP_SIDEBAND_TX_RX; - mstb->tx_slots[slot] = NULL; - mgr->is_waiting_for_dwn_reply = false; + list_del(&txmsg->next); mutex_unlock(&mgr->qlock); wake_up_all(&mgr->tx_waitq); @@ -3815,9 +3761,6 @@ static int drm_dp_mst_handle_down_rep(struct drm_dp_mst_topology_mgr *mgr) no_msg: drm_dp_mst_topology_put_mstb(mstb); clear_down_rep_recv: - mutex_lock(&mgr->qlock); - mgr->is_waiting_for_dwn_reply = false; - mutex_unlock(&mgr->qlock); memset(&mgr->down_rep_recv, 0, sizeof(struct drm_dp_sideband_msg_rx)); return 0; @@ -3896,7 +3839,6 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr) { struct drm_dp_sideband_msg_hdr *hdr = &mgr->up_req_recv.initial_hdr; struct drm_dp_pending_up_req *up_req; - bool seqno; if (!drm_dp_get_one_sb_msg(mgr, true)) goto out; @@ -3911,7 +3853,6 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr) } INIT_LIST_HEAD(&up_req->next); - seqno = hdr->seqno; drm_dp_sideband_parse_req(&mgr->up_req_recv, &up_req->msg); if (up_req->msg.req_type != DP_CONNECTION_STATUS_NOTIFY && @@ -3923,7 +3864,7 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr) } drm_dp_send_up_ack_reply(mgr, mgr->mst_primary, up_req->msg.req_type, - seqno, false); + false); if (up_req->msg.req_type == DP_CONNECTION_STATUS_NOTIFY) { const struct drm_dp_connection_status_notify *conn_stat = @@ -4674,7 +4615,7 @@ static void drm_dp_tx_work(struct work_struct *work) struct drm_dp_mst_topology_mgr *mgr = container_of(work, struct drm_dp_mst_topology_mgr, tx_work); mutex_lock(&mgr->qlock); - if (!list_empty(&mgr->tx_msg_downq) && !mgr->is_waiting_for_dwn_reply) + if (!list_empty(&mgr->tx_msg_downq)) process_single_down_tx_qlock(mgr); mutex_unlock(&mgr->qlock); } @@ -4705,26 +4646,25 @@ static inline void drm_dp_delayed_destroy_mstb(struct drm_dp_mst_branch *mstb) { struct drm_dp_mst_topology_mgr *mgr = mstb->mgr; - struct drm_dp_mst_port *port, *tmp; + struct drm_dp_mst_port *port, *port_tmp; + struct drm_dp_sideband_msg_tx *txmsg, *txmsg_tmp; bool wake_tx = false; mutex_lock(&mgr->lock); - list_for_each_entry_safe(port, tmp, &mstb->ports, next) { + list_for_each_entry_safe(port, port_tmp, &mstb->ports, next) { list_del(&port->next); drm_dp_mst_topology_put_port(port); } mutex_unlock(&mgr->lock); - /* drop any tx slots msg */ + /* drop any tx slot msg */ mutex_lock(&mstb->mgr->qlock); - if (mstb->tx_slots[0]) { - mstb->tx_slots[0]->state = DRM_DP_SIDEBAND_TX_TIMEOUT; - mstb->tx_slots[0] = NULL; - wake_tx = true; - } - if (mstb->tx_slots[1]) { - mstb->tx_slots[1]->state = DRM_DP_SIDEBAND_TX_TIMEOUT; - mstb->tx_slots[1] = NULL; + list_for_each_entry_safe(txmsg, txmsg_tmp, &mgr->tx_msg_downq, next) { + if (txmsg->dst != mstb) + continue; + + txmsg->state = DRM_DP_SIDEBAND_TX_TIMEOUT; + list_del(&txmsg->next); wake_tx = true; } mutex_unlock(&mstb->mgr->qlock); diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h index 3cde42b333c3..644eca37cb94 100644 --- a/include/drm/drm_dp_mst_helper.h +++ b/include/drm/drm_dp_mst_helper.h @@ -165,11 +165,8 @@ struct drm_dp_mst_port { * @rad: Relative Address to talk to this branch device. * @lct: Link count total to talk to this branch device. * @num_ports: number of ports on the branch. - * @msg_slots: one bit per transmitted msg slot. * @port_parent: pointer to the port parent, NULL if toplevel. * @mgr: topology manager for this branch device. - * @tx_slots: transmission slots for this device. - * @last_seqno: last sequence number used to talk to this. * @link_address_sent: if a link address message has been sent to this device yet. * @guid: guid for DP 1.2 branch device. port under this branch can be * identified by port #. @@ -210,7 +207,6 @@ struct drm_dp_mst_branch { u8 lct; int num_ports; - int msg_slots; /** * @ports: the list of ports on this branch device. This should be * considered protected for reading by &drm_dp_mst_topology_mgr.lock. @@ -223,13 +219,9 @@ struct drm_dp_mst_branch { */ struct list_head ports; - /* list of tx ops queue for this port */ struct drm_dp_mst_port *port_parent; struct drm_dp_mst_topology_mgr *mgr; - /* slots are protected by mstb->mgr->qlock */ - struct drm_dp_sideband_msg_tx *tx_slots[2]; - int last_seqno; bool link_address_sent; /* global unique identifier to identify branch devices */ @@ -589,11 +581,6 @@ struct drm_dp_mst_topology_mgr { */ bool payload_id_table_cleared : 1; - /** - * @is_waiting_for_dwn_reply: whether we're waiting for a down reply. - */ - bool is_waiting_for_dwn_reply : 1; - /** * @mst_primary: Pointer to the primary/first branch device. */ @@ -618,13 +605,12 @@ struct drm_dp_mst_topology_mgr { const struct drm_private_state_funcs *funcs; /** - * @qlock: protects @tx_msg_downq, the &drm_dp_mst_branch.txslost and - * &drm_dp_sideband_msg_tx.state once they are queued + * @qlock: protects @tx_msg_downq and &drm_dp_sideband_msg_tx.state */ struct mutex qlock; /** - * @tx_msg_downq: List of pending down replies. + * @tx_msg_downq: List of pending down requests */ struct list_head tx_msg_downq; -- 2.25.3

4 years

2
1
0 0

[PATCH AUTOSEL 5.6 01/38] libbpf: Initialize *nl_pid so gcc 10 is happy

by Sasha Levin

From: Jeremy Cline <jcline(a)redhat.com> [ Upstream commit 4734b0fefbbf98f8c119eb8344efa19dac82cd2c ] Builds of Fedora's kernel-tools package started to fail with "may be used uninitialized" warnings for nl_pid in bpf_set_link_xdp_fd() and bpf_get_link_xdp_info() on the s390 architecture. Although libbpf_netlink_open() always returns a negative number when it does not set *nl_pid, the compiler does not determine this and thus believes the variable might be used uninitialized. Assuage gcc's fears by explicitly initializing nl_pid. Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1807781 Signed-off-by: Jeremy Cline <jcline(a)redhat.com> Signed-off-by: Daniel Borkmann <daniel(a)iogearbox.net> Acked-by: Andrii Nakryiko <andriin(a)fb.com> Link: https://lore.kernel.org/bpf/20200404051430.698058-1-jcline@redhat.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/lib/bpf/netlink.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/lib/bpf/netlink.c b/tools/lib/bpf/netlink.c index 6d47345a310bd..b294e2aeb3283 100644 --- a/tools/lib/bpf/netlink.c +++ b/tools/lib/bpf/netlink.c @@ -141,7 +141,7 @@ int bpf_set_link_xdp_fd(int ifindex, int fd, __u32 flags) struct ifinfomsg ifinfo; char attrbuf[64]; } req; - __u32 nl_pid; + __u32 nl_pid = 0; sock = libbpf_netlink_open(&nl_pid); if (sock < 0) @@ -256,7 +256,7 @@ int bpf_get_link_xdp_info(int ifindex, struct xdp_link_info *info, { struct xdp_id_md xdp_id = {}; int sock, ret; - __u32 nl_pid; + __u32 nl_pid = 0; __u32 mask; if (flags & ~XDP_FLAGS_MASK || !info_size) -- 2.20.1

4 years

5
44
0 0

[PATCH AUTOSEL 4.9 01/13] xfs: fix partially uninitialized structure in xfs_reflink_remap_extent

by Sasha Levin

From: "Darrick J. Wong" <darrick.wong(a)oracle.com> [ Upstream commit c142932c29e533ee892f87b44d8abc5719edceec ] In the reflink extent remap function, it turns out that uirec (the block mapping corresponding only to the part of the passed-in mapping that got unmapped) was not fully initialized. Specifically, br_state was not being copied from the passed-in struct to the uirec. This could lead to unpredictable results such as the reflinked mapping being marked unwritten in the destination file. Signed-off-by: Darrick J. Wong <darrick.wong(a)oracle.com> Reviewed-by: Brian Foster <bfoster(a)redhat.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- fs/xfs/xfs_reflink.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index 17d3c964a2a23..6b753b969f7b8 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -1162,6 +1162,7 @@ xfs_reflink_remap_extent( uirec.br_startblock = irec->br_startblock + rlen; uirec.br_startoff = irec->br_startoff + rlen; uirec.br_blockcount = unmap_len - rlen; + uirec.br_state = irec->br_state; unmap_len = rlen; /* If this isn't a real mapping, we're done. */ -- 2.20.1

4 years

2
14
0 0

FAILED: patch "[PATCH] iwlwifi: mvm: limit maximum queue appropriately" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From e5b72e3bc4763152e24bf4b8333bae21cc526c56 Mon Sep 17 00:00:00 2001 From: Johannes Berg <johannes.berg(a)intel.com> Date: Fri, 17 Apr 2020 10:08:12 +0300 Subject: [PATCH] iwlwifi: mvm: limit maximum queue appropriately Due to some hardware issues, queue 31 isn't usable on devices that have 32 queues (7000, 8000, 9000 families), which is correctly reflected in the configuration and TX queue initialization. However, the firmware API and queue allocation code assumes that there are 32 queues, and if something actually attempts to use #31 this leads to a NULL-pointer dereference since it's not allocated. Fix this by limiting to 31 in the IWL_MVM_DQA_MAX_DATA_QUEUE, and also add some code to catch this earlier in the future, if the configuration changes perhaps. Cc: stable(a)vger.kernel.org # v4.9+ Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> Signed-off-by: Luca Coelho <luciano.coelho(a)intel.com> Signed-off-by: Kalle Valo <kvalo(a)codeaurora.org> Link: https://lore.kernel.org/r/iwlwifi.20200417100405.98a79be2db6a.I3a4af6b03b87… diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/txq.h b/drivers/net/wireless/intel/iwlwifi/fw/api/txq.h index 73196cbc7fbe..75d958bab0e3 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/txq.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/txq.h @@ -8,7 +8,7 @@ * Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2016 - 2017 Intel Deutschland GmbH - * Copyright(c) 2019 Intel Corporation + * Copyright(c) 2019 - 2020 Intel Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as @@ -31,7 +31,7 @@ * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2016 - 2017 Intel Deutschland GmbH - * Copyright(c) 2019 Intel Corporation + * Copyright(c) 2019 - 2020 Intel Corporation * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -99,7 +99,7 @@ enum iwl_mvm_dqa_txq { IWL_MVM_DQA_MAX_MGMT_QUEUE = 8, IWL_MVM_DQA_AP_PROBE_RESP_QUEUE = 9, IWL_MVM_DQA_MIN_DATA_QUEUE = 10, - IWL_MVM_DQA_MAX_DATA_QUEUE = 31, + IWL_MVM_DQA_MAX_DATA_QUEUE = 30, }; enum iwl_mvm_tx_fifo { diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index 64ef3f3ba23b..251d6fbb1da5 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -722,6 +722,11 @@ static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, lockdep_assert_held(&mvm->mutex); + if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, + "max queue %d >= num_of_queues (%d)", maxq, + mvm->trans->trans_cfg->base_params->num_of_queues)) + maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; + /* This should not be hit with new TX path */ if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return -ENOSPC;

4 years

2
1
0 0

stable-rc/linux-4.4.y build: 190 builds: 1 failed, 189 passed, 2 errors, 13 warnings (v4.4.220-61-gf597674b96ad)

by kernelci.org bot

stable-rc/linux-4.4.y build: 190 builds: 1 failed, 189 passed, 2 errors, 13 warnings (v4.4.220-61-gf597674b96ad) Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.4.y/kernel/v4.4.220-61-… Tree: stable-rc Branch: linux-4.4.y Git Describe: v4.4.220-61-gf597674b96ad Git Commit: f597674b96ad2907d2b567b0e7738c9d7f9d1cac Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Built: 6 unique architectures Build Failure Detected: mips: sead3micro_defconfig: (gcc-8) FAIL Errors and Warnings Detected: arc: allnoconfig (gcc-8): 3 warnings tinyconfig (gcc-8): 4 warnings arm64: arm: clps711x_defconfig (gcc-8): 1 warning davinci_all_defconfig (gcc-8): 1 warning lpc32xx_defconfig (gcc-8): 1 warning mxs_defconfig (gcc-8): 1 warning i386: mips: ip22_defconfig (gcc-8): 1 warning ip28_defconfig (gcc-8): 1 warning sead3micro_defconfig (gcc-8): 2 errors x86_64: Errors summary: 1 arch/mips/kernel/genex.S:271: Error: branch to a symbol in another ISA mode 1 arch/mips/kernel/genex.S:152: Error: branch to a symbol in another ISA mode Warnings summary: 7 warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) 2 drivers/net/ethernet/seeq/sgiseeq.c:804:26: warning: passing argument 5 of ‘dma_free_attrs’ makes pointer from integer without a cast [-Wint-conversion] 1 arch/arm/mach-mxs/mach-mxs.c:285:26: warning: duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier] 1 arch/arm/mach-lpc32xx/phy3250.c:215:36: warning: duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier] 1 arch/arm/mach-davinci/da8xx-dt.c:23:34: warning: duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier] 1 arch/arm/mach-clps711x/board-autcpu12.c:163:26: warning: duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier] ================================================================================ Detailed per-defconfig build reports: -------------------------------------------------------------------------------- acs5k_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- acs5k_tiny_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (i386, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arc, gcc-8) — PASS, 0 errors, 3 warnings, 0 section mismatches Warnings: warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) -------------------------------------------------------------------------------- allnoconfig (arm64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (x86_64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- am200epdkit_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ar7_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- assabet_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- at91_dt_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ath79_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- axm55xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- axs103_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- axs103_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- badge4_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm2835_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm47xx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm63xx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bigsur_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bmips_be_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bmips_stb_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- capcella_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cavium_octeon_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cerfcube_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ci20_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- clps711x_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: arch/arm/mach-clps711x/board-autcpu12.c:163:26: warning: duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier] -------------------------------------------------------------------------------- cm_x2xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cm_x300_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cns3420vb_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cobalt_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- colibri_pxa270_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- colibri_pxa300_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- collie_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- corgi_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- davinci_all_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: arch/arm/mach-davinci/da8xx-dt.c:23:34: warning: duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier] -------------------------------------------------------------------------------- db1xxx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- decstation_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig (arm64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- dove_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- e55_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ebsa110_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- efm32_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- em_x270_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ep93xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- eseries_pxa_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- exynos_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ezx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- footbridge_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- fuloong2e_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- gpr_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- h3600_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- h5000_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- hackkit_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- hisi_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- i386_defconfig (i386, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imote2_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v4_v5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v6_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- integrator_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop13xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop32x_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop33x_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip22_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/net/ethernet/seeq/sgiseeq.c:804:26: warning: passing argument 5 of ‘dma_free_attrs’ makes pointer from integer without a cast [-Wint-conversion] -------------------------------------------------------------------------------- ip27_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip28_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: drivers/net/ethernet/seeq/sgiseeq.c:804:26: warning: passing argument 5 of ‘dma_free_attrs’ makes pointer from integer without a cast [-Wint-conversion] -------------------------------------------------------------------------------- ip32_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ixp4xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jazz_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jmr3927_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jornada720_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- keystone_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ks8695_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lart_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lasat_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lemote2f_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- loongson3_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lpc18xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lpc32xx_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: arch/arm/mach-lpc32xx/phy3250.c:215:36: warning: duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier] -------------------------------------------------------------------------------- lpd270_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ls1b_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lubbock_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- magician_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mainstone_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_kvm_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_kvm_guest_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_qemu_32r6_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltaaprp_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltasmvp_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltasmvp_eva_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltaup_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltaup_xpa_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- markeins_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mini2440_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mips_paravirt_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mmp2_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- moxart_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mpc30x_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- msp71xx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mtx1_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mv78xx0_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mvebu_v5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mvebu_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mxs_defconfig (arm, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: arch/arm/mach-mxs/mach-mxs.c:285:26: warning: duplicate ‘const’ declaration specifier [-Wduplicate-decl-specifier] -------------------------------------------------------------------------------- neponset_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- netwinder_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- netx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nhk8815_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nlm_xlp_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nlm_xlr_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nsim_hs_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nsim_hs_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nsimosci_hs_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nsimosci_hs_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nuc910_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nuc950_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nuc960_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap1_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap2plus_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- orion5x_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- palmz72_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pcm027_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pistachio_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pleb_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pnx8335_stb225_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- prima2_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa168_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa255-idp_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa3xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa910_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- qcom_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- qi_lb60_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- raumfeld_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rb532_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rbtx49xx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- realview-smp_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- realview_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rm200_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rpc_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rt305x_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s3c2410_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s3c6400_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s5pv210_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sama5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sb1250_swarm_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sead3_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sead3micro_defconfig (mips, gcc-8) — FAIL, 2 errors, 0 warnings, 0 section mismatches Errors: arch/mips/kernel/genex.S:152: Error: branch to a symbol in another ISA mode arch/mips/kernel/genex.S:271: Error: branch to a symbol in another ISA mode -------------------------------------------------------------------------------- shannon_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- shmobile_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- simpad_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- socfpga_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear13xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear3xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear6xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spitz_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- stm32_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sunxi_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0219_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0226_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0287_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tct_hammer_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tegra_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (x86_64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (arc, gcc-8) — PASS, 0 errors, 4 warnings, 0 section mismatches Warnings: warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) warning: (ARC) selects HAVE_FUTEX_CMPXCHG which has unmet direct dependencies (FUTEX) -------------------------------------------------------------------------------- tinyconfig (arm64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (i386, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- trizeps4_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- u300_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- u8500_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vdk_hs38_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vdk_hs38_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- versatile_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vexpress_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vf610m4_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- viper_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vt8500_v6_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- workpad_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig (x86_64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- xcep_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- xilfpga_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- xway_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- zeus_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- zx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches --- For more info write to <info(a)kernelci.org>

4 years

1
0
0 0

FAILED: patch "[PATCH] bpf, x86: Fix encoding for lower 8-bit registers in BPF_STX" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From aee194b14dd2b2bde6252b3acf57d36dccfc743a Mon Sep 17 00:00:00 2001 From: Luke Nelson <lukenels(a)cs.washington.edu> Date: Sat, 18 Apr 2020 16:26:53 -0700 Subject: [PATCH] bpf, x86: Fix encoding for lower 8-bit registers in BPF_STX BPF_B This patch fixes an encoding bug in emit_stx for BPF_B when the source register is BPF_REG_FP. The current implementation for BPF_STX BPF_B in emit_stx saves one REX byte when the operands can be encoded using Mod-R/M alone. The lower 8 bits of registers %rax, %rbx, %rcx, and %rdx can be accessed without using a REX prefix via %al, %bl, %cl, and %dl, respectively. Other registers, (e.g., %rsi, %rdi, %rbp, %rsp) require a REX prefix to use their 8-bit equivalents (%sil, %dil, %bpl, %spl). The current code checks if the source for BPF_STX BPF_B is BPF_REG_1 or BPF_REG_2 (which map to %rdi and %rsi), in which case it emits the required REX prefix. However, it misses the case when the source is BPF_REG_FP (mapped to %rbp). The result is that BPF_STX BPF_B with BPF_REG_FP as the source operand will read from register %ch instead of the correct %bpl. This patch fixes the problem by fixing and refactoring the check on which registers need the extra REX byte. Since no BPF registers map to %rsp, there is no need to handle %spl. Fixes: 622582786c9e0 ("net: filter: x86: internal BPF JIT") Signed-off-by: Xi Wang <xi.wang(a)gmail.com> Signed-off-by: Luke Nelson <luke.r.nels(a)gmail.com> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Link: https://lore.kernel.org/bpf/20200418232655.23870-1-luke.r.nels@gmail.com diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index 5ea7c2cf7ab4..42b6709e6dc7 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -158,6 +158,19 @@ static bool is_ereg(u32 reg) BIT(BPF_REG_AX)); } +/* + * is_ereg_8l() == true if BPF register 'reg' is mapped to access x86-64 + * lower 8-bit registers dil,sil,bpl,spl,r8b..r15b, which need extra byte + * of encoding. al,cl,dl,bl have simpler encoding. + */ +static bool is_ereg_8l(u32 reg) +{ + return is_ereg(reg) || + (1 << reg) & (BIT(BPF_REG_1) | + BIT(BPF_REG_2) | + BIT(BPF_REG_FP)); +} + static bool is_axreg(u32 reg) { return reg == BPF_REG_0; @@ -598,9 +611,8 @@ static void emit_stx(u8 **pprog, u32 size, u32 dst_reg, u32 src_reg, int off) switch (size) { case BPF_B: /* Emit 'mov byte ptr [rax + off], al' */ - if (is_ereg(dst_reg) || is_ereg(src_reg) || - /* We have to add extra byte for x86 SIL, DIL regs */ - src_reg == BPF_REG_1 || src_reg == BPF_REG_2) + if (is_ereg(dst_reg) || is_ereg_8l(src_reg)) + /* Add extra byte for eregs or SIL,DIL,BPL in src_reg */ EMIT2(add_2mod(0x40, dst_reg, src_reg), 0x88); else EMIT1(0x88);

4 years

2
1
0 0

ext4 perf regression on LTS kernels

by Sasha Levin

Hi folks, We're working on trying to figure out a severe performance regression in the 5.4 and older LTS trees. The regression seems to happen only on physical spinning rust disks, which is why it was probably went unnoticed. The regression seems to be introduced in v4.7 with: 1f60fbe72749 ("ext4: allow readdir()'s of large empty directories to be interrupted") The fio test used to reproduce it is: sync; i=0; while [ $i -lt 4 ]; do ( ( time fio --name=disk-burner --readwrite=write --bs=4096 --invalidate=1 --end_fsync=0 --filesize=800M --runtime=120 --ioengine=libaio --thread --numjobs=20 --iodepth=1 --unlink=1 ) 2>&1 | grep '^real' ); ((i++)); done When run with the offending commit, it'll take 3-4x longer to complete. The regression was fixed upstream somewhere in this merge: e5da4c933c50 ("Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4") but it seems to be a combination of commits that fix it rather than a single one. Now, here's the tricky part... reverting these two commits on top of v4.19.118 "fixes" the issue: 06bd3c36a733 ("ext4: fix data exposure after a crash") 1f60fbe72749 ("ext4: allow readdir()'s of large empty directories to be interrupted") but clearly this is not something we want to do in the stable trees, so we're trying to figure out the proper way to fix this. -- Thanks, Sasha

4 years

1
0
0 0

[PATCH v3 07/11] PCI: qcom: add support for defining some PARF params

by Ansuel Smith

Add support for Tx De-Emphasis, Tx Swing and Rx equalization definition needed on some ipq8064 based device (Netgear R7800 for example). This cause a total lock of the system on kernel load. Fixes: 82a823833f4e PCI: qcom: Add Qualcomm PCIe controller driver Signed-off-by: Ansuel Smith <ansuelsmth(a)gmail.com> Cc: stable(a)vger.kernel.org # v4.5+ --- drivers/pci/controller/dwc/pcie-qcom.c | 47 ++++++++++++++++++++++++-- 1 file changed, 45 insertions(+), 2 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index a4fd5baada34..da8058fd1925 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -46,6 +46,9 @@ #define PCIE20_PARF_PHY_CTRL 0x40 #define PCIE20_PARF_PHY_REFCLK 0x4C +#define PHY_REFCLK_SSP_EN BIT(16) +#define PHY_REFCLK_USE_PAD BIT(12) + #define PCIE20_PARF_DBI_BASE_ADDR 0x168 #define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16C #define PCIE20_PARF_MHI_CLOCK_RESET_CTRL 0x174 @@ -77,6 +80,18 @@ #define DBI_RO_WR_EN 1 #define PERST_DELAY_US 1000 +/* PARF registers */ +#define PCIE20_PARF_PCS_DEEMPH 0x34 +#define PCS_DEEMPH_TX_DEEMPH_GEN1(x) ((x) << 16) +#define PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(x) ((x) << 8) +#define PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(x) ((x) << 0) + +#define PCIE20_PARF_PCS_SWING 0x38 +#define PCS_SWING_TX_SWING_FULL(x) ((x) << 8) +#define PCS_SWING_TX_SWING_LOW(x) ((x) << 0) + +#define PCIE20_PARF_CONFIG_BITS 0x50 +#define PHY_RX0_EQ(x) ((x) << 24) #define PCIE20_v3_PARF_SLV_ADDR_SPACE_SIZE 0x358 #define SLV_ADDR_SPACE_SZ 0x10000000 @@ -97,6 +112,12 @@ struct qcom_pcie_resources_2_1_0 { struct reset_control *phy_reset; struct reset_control *ext_reset; struct regulator_bulk_data supplies[QCOM_PCIE_2_1_0_MAX_SUPPLY]; + u32 tx_deemph_gen1; + u32 tx_deemph_gen2_3p5db; + u32 tx_deemph_gen2_6db; + u32 tx_swing_full; + u32 tx_swing_low; + u32 rx0_eq; }; struct qcom_pcie_resources_1_0_0 { @@ -234,8 +255,21 @@ static int qcom_pcie_get_resources_2_1_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; + struct device_node *node = dev->of_node; int ret; + of_property_read_u32(node, "qcom,tx-deemph-gen1", + &res->tx_deemph_gen1); + of_property_read_u32(node, "qcom,tx-deemph-gen2-3p5db", + &res->tx_deemph_gen2_3p5db); + of_property_read_u32(node, "qcom,tx-deemph-gen2-6db", + &res->tx_deemph_gen2_6db); + of_property_read_u32(node, "qcom,tx-swing-full", + &res->tx_swing_full); + of_property_read_u32(node, "qcom,tx-swing-low", + &res->tx_swing_low); + of_property_read_u32(node, "qcom,rx0-eq", &res->rx0_eq); + res->supplies[0].supply = "vdda"; res->supplies[1].supply = "vdda_phy"; res->supplies[2].supply = "vdda_refclk"; @@ -368,9 +402,18 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie) /* enable PCIe clocks and resets */ qcom_clear_and_set_dword(pcie->parf + PCIE20_PARF_PHY_CTRL, BIT(0), 0); + writel(PCS_DEEMPH_TX_DEEMPH_GEN1(res->tx_deemph_gen1) | + PCS_DEEMPH_TX_DEEMPH_GEN2_3_5DB(res->tx_deemph_gen2_3p5db) | + PCS_DEEMPH_TX_DEEMPH_GEN2_6DB(res->tx_deemph_gen2_6db), + pcie->parf + PCIE20_PARF_PCS_DEEMPH); + writel(PCS_SWING_TX_SWING_FULL(res->tx_swing_full) | + PCS_SWING_TX_SWING_LOW(res->tx_swing_low), + pcie->parf + PCIE20_PARF_PCS_SWING); + writel(PHY_RX0_EQ(res->rx0_eq), pcie->parf + PCIE20_PARF_CONFIG_BITS); + /* enable external reference clock */ - qcom_clear_and_set_dword(pcie->parf + PCIE20_PARF_PHY_REFCLK, 0, - BIT(16)); + qcom_clear_and_set_dword(pcie->parf + PCIE20_PARF_PHY_REFCLK, + PHY_REFCLK_USE_PAD, PHY_REFCLK_SSP_EN; ret = reset_control_deassert(res->phy_reset); if (ret) { -- 2.25.1

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Linux-stable-mirror April 2020