- Linux-stable-mirror - lists.linaro.org

[PATCH 4.14 00/45] 4.14.42-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.14.42 release. There are 45 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Sun May 20 08:15:14 UTC 2018. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.14.42-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.14.42-rc1 Willy Tarreau <w(a)1wt.eu> proc: do not access cmdline nor environ from file-backed areas James Chapman <jchapman(a)katalix.com> l2tp: revert "l2tp: fix missing print session offset info" Antony Antony <antony(a)phenome.org> xfrm: fix xfrm_do_migrate() with AEAD e.g(AES-GCM) ethanwu <ethanwu(a)synology.com> btrfs: Take trans lock before access running trans in check_delayed_ref Herbert Xu <herbert(a)gondor.apana.org.au> xfrm: Use __skb_queue_tail in xfrm_trans_queue Dave Carroll <david.carroll(a)microsemi.com> scsi: aacraid: Correct hba_send to include iu_type Paolo Abeni <pabeni(a)redhat.com> udp: fix SO_BINDTODEVICE Eric Dumazet <edumazet(a)google.com> nsh: fix infinite loop Jianbo Liu <jianbol(a)mellanox.com> net/mlx5e: Allow offloading ipv4 header re-write for icmp Eric Dumazet <edumazet(a)google.com> ipv6: fix uninit-value in ip6_multipath_l3_keys() Stephen Hemminger <stephen(a)networkplumber.org> hv_netvsc: set master device Talat Batheesh <talatb(a)mellanox.com> net/mlx5: Avoid cleaning flow steering table twice during error flow Tariq Toukan <tariqt(a)mellanox.com> net/mlx5e: TX, Use correct counter in dma_map error flow Jiri Pirko <jiri(a)mellanox.com> net: sched: fix error path in tcf_proto_create() when modules are not configured Debabrata Banerjee <dbanerje(a)akamai.com> bonding: send learning packets for vlans on slave Debabrata Banerjee <dbanerje(a)akamai.com> bonding: do not allow rlb updates to invalid mac Michael Chan <michael.chan(a)broadcom.com> tg3: Fix vunmap() BUG_ON() triggered from tg3_free_consistent(). Yuchung Cheng <ycheng(a)google.com> tcp: ignore Fast Open on repair mode Neal Cardwell <ncardwell(a)google.com> tcp_bbr: fix to zero idle_restart only upon S/ACKed data Xin Long <lucien.xin(a)gmail.com> sctp: use the old asoc when making the cookie-ack chunk in dupcook_d Xin Long <lucien.xin(a)gmail.com> sctp: remove sctp_chunk_put from fail_mark err path in sctp_ulpevent_make_rcvmsg Xin Long <lucien.xin(a)gmail.com> sctp: handle two v4 addrs comparison in sctp_inet6_cmp_addr Xin Long <lucien.xin(a)gmail.com> sctp: fix the issue that the cookie-ack with auth can't get processed Xin Long <lucien.xin(a)gmail.com> sctp: delay the authentication for the duplicated cookie-echo chunk Eric Dumazet <edumazet(a)google.com> rds: do not leak kernel memory to user land Heiner Kallweit <hkallweit1(a)gmail.com> r8169: fix powering up RTL8168h Bjørn Mork <bjorn(a)mork.no> qmi_wwan: do not steal interfaces from class drivers Stefano Brivio <sbrivio(a)redhat.com> openvswitch: Don't swap table in nlattr_set() after OVS_ATTR_NESTED is found Andre Tomt <andre(a)tomt.net> net/tls: Fix connection stall on partial tls record Dave Watson <davejwatson(a)fb.com> net/tls: Don't recursively call push_record during tls_write_space callbacks Lance Richardson <lance.richardson.net(a)gmail.com> net: support compat 64-bit time in {s,g}etsockopt Eric Dumazet <edumazet(a)google.com> net_sched: fq: take care of throttled flows before reuse Roman Mashak <mrv(a)mojatatu.com> net sched actions: fix refcnt leak in skbmod Adi Nissim <adin(a)mellanox.com> net/mlx5: E-Switch, Include VF RDMA stats in vport statistics Roi Dayan <roid(a)mellanox.com> net/mlx5e: Err if asked to offload TC match on frag being first Moshe Shemesh <moshe(a)mellanox.com> net/mlx4_en: Verify coalescing parameters are in range Christophe JAILLET <christophe.jaillet(a)wanadoo.fr> net/mlx4_en: Fix an error handling path in 'mlx4_en_init_netdev()' Grygorii Strashko <grygorii.strashko(a)ti.com> net: ethernet: ti: cpsw: fix packet leaking in dual_mac mode Rob Taglang <rob(a)taglang.io> net: ethernet: sun: niu set correct packet size in skb Eric Dumazet <edumazet(a)google.com> llc: better deal with too small mtu Andrey Ignatov <rdna(a)fb.com> ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg Julian Anastasov <ja(a)ssi.bg> ipv4: fix fnhe usage by non-cached routes Eric Dumazet <edumazet(a)google.com> dccp: fix tasklet usage Hangbin Liu <liuhangbin(a)gmail.com> bridge: check iface upper dev when setting master via ioctl Ingo Molnar <mingo(a)elte.hu> 8139too: Use disable_irq_nosync() in rtl8139_poll_controller() ------------- Diffstat: Makefile | 4 +- drivers/net/bonding/bond_alb.c | 15 +-- drivers/net/bonding/bond_main.c | 2 + drivers/net/ethernet/broadcom/tg3.c | 9 +- drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 16 +++ drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 8 +- drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 7 +- drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 7 +- drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 20 ++-- drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 11 +- drivers/net/ethernet/mellanox/mlx5/core/fs_core.c | 23 +++-- drivers/net/ethernet/realtek/8139too.c | 2 +- drivers/net/ethernet/realtek/r8169.c | 3 + drivers/net/ethernet/sun/niu.c | 5 +- drivers/net/ethernet/ti/cpsw.c | 2 + drivers/net/hyperv/netvsc_drv.c | 3 +- drivers/net/usb/qmi_wwan.c | 12 +++ drivers/scsi/aacraid/commsup.c | 8 +- fs/btrfs/extent-tree.c | 7 ++ fs/proc/base.c | 8 +- include/linux/mm.h | 1 + include/net/bonding.h | 1 + include/net/tls.h | 1 + mm/gup.c | 3 + net/bridge/br_if.c | 4 +- net/compat.c | 6 +- net/dccp/ccids/ccid2.c | 14 ++- net/dccp/timer.c | 2 +- net/ipv4/ping.c | 7 +- net/ipv4/route.c | 118 ++++++++++------------ net/ipv4/tcp.c | 3 +- net/ipv4/tcp_bbr.c | 4 +- net/ipv4/udp.c | 11 +- net/ipv6/route.c | 7 +- net/ipv6/udp.c | 4 +- net/l2tp/l2tp_netlink.c | 2 - net/llc/af_llc.c | 3 + net/nsh/nsh.c | 2 + net/openvswitch/flow_netlink.c | 9 +- net/rds/recv.c | 1 + net/sched/act_skbmod.c | 5 +- net/sched/cls_api.c | 2 +- net/sched/sch_fq.c | 37 ++++--- net/sctp/associola.c | 30 +++++- net/sctp/inqueue.c | 2 +- net/sctp/ipv6.c | 3 + net/sctp/sm_statefuns.c | 88 ++++++++-------- net/sctp/ulpevent.c | 1 - net/tls/tls_main.c | 8 ++ net/xfrm/xfrm_input.c | 2 +- net/xfrm/xfrm_state.c | 1 + 51 files changed, 349 insertions(+), 205 deletions(-)

7 years, 7 months

4
47
0 0

[PATCH] drm/psr: Fix missed entry in PSR setup time table.

by Dhinakaran Pandiyan

Entry corresponding to 220 us setup time was missing. I am not aware of any specific bug this fixes, but this could potentially result in enabling PSR on a panel with a higher setup time requirement than supported by the hardware. I verified the value is present in eDP spec versions 1.3, 1.4 and 1.4a. Fixes: 6608804b3d7f ("drm/dp: Add drm_dp_psr_setup_time()") Cc: stable(a)vger.kernel.org Cc: Ville Syrjälä <ville.syrjala(a)linux.intel.com> Cc: Jose Roberto de Souza <jose.souza(a)intel.com> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan(a)intel.com> --- drivers/gpu/drm/drm_dp_helper.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 36c7609a4bd5..a7ba602a43a8 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -1159,6 +1159,7 @@ int drm_dp_psr_setup_time(const u8 psr_cap[EDP_PSR_RECEIVER_CAP_SIZE]) static const u16 psr_setup_time_us[] = { PSR_SETUP_TIME(330), PSR_SETUP_TIME(275), + PSR_SETUP_TIME(220), PSR_SETUP_TIME(165), PSR_SETUP_TIME(110), PSR_SETUP_TIME(55), -- 2.14.1

7 years, 7 months

3
3
0 0

[PATCH] scsi: sg: allocate with __GFP_ZERO in sg_build_indirect()

by Alexander Potapenko

This shall help avoid copying uninitialized memory to the userspace when calling ioctl(fd, SG_IO) with an empty command. Reported-by: syzbot+7d26fc1eea198488deab(a)syzkaller.appspotmail.com Cc: stable(a)vger.kernel.org Signed-off-by: Alexander Potapenko <glider(a)google.com> Acked-by: Douglas Gilbert <dgilbert(a)interlog.com> Reviewed-by: Johannes Thumshirn <jthumshirn(a)suse.de> --- drivers/scsi/sg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index c198b96368dd..5c40d809830f 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -1894,7 +1894,7 @@ sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size) num = (rem_sz > scatter_elem_sz_prev) ? scatter_elem_sz_prev : rem_sz; - schp->pages[k] = alloc_pages(gfp_mask, order); + schp->pages[k] = alloc_pages(gfp_mask | __GFP_ZERO, order); if (!schp->pages[k]) goto out; -- 2.17.0.441.gb46fe60e1d-goog

7 years, 7 months

3
2
0 0

[PATCH] PM/ runtime: fix resume from suspend on newer hp zbook/elitebook

by Thomas Martitz

In 08810a4119aaebf6318f209ec5dd9828e969cba4 setting dev->power.direct_complete was made conditional on pm_runtime_suspended(). The justification was: While at it, make the core check pm_runtime_suspended() when setting power.direct_complete so that it doesn't need to be checked by ->prepare callbacks. However, this breaks resuming from suspend on those newer HP laptops if the amdgpu driver is used (due to hybrid intel+radeon graphics). Given the justification for the change, undoing it seems best as it appears to have unintended side effects. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=199693 References: https://bugs.freedesktop.org/show_bug.cgi?id=106447 Signed-off-by: Thomas Martitz <kugel(a)rockbox.org> Cc: Pavel Machek <pavel(a)ucw.cz> Cc: Len Brown <len.brown(a)intel.com> Cc: <linux-pm(a)vger.kernel.org> Cc: <stable(a)vger.kernel.org> [4.15+] Signed-off-by: Thomas Martitz <kugel(a)rockbox.org> --- drivers/base/power/main.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 02a497e7c785..b2fb0974f832 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -1960,8 +1960,7 @@ static int device_prepare(struct device *dev, pm_message_t state) */ spin_lock_irq(&dev->power.lock); dev->power.direct_complete = state.event == PM_EVENT_SUSPEND && - pm_runtime_suspended(dev) && ret > 0 && - !dev_pm_test_driver_flags(dev, DPM_FLAG_NEVER_SKIP); + ret > 0 && !dev_pm_test_driver_flags(dev, DPM_FLAG_NEVER_SKIP); spin_unlock_irq(&dev->power.lock); return 0; } -- 2.17.0

7 years, 7 months

2
3
0 0

reverting "l2tp: fix missing print session offset info"

by Guillaume Nault

Hi, Commit 820da5357572 ("l2tp: fix missing print session offset info") has been backported to several -stable trees (AFAICS 3.18, 4.4, 4.9, 4.14 and 4.15). This patch has been reverted upstream as the L2TP offset option was dropped. Therefore it doesn't make sense to start exporting this data in stable releases. Can you guys revert the corresponding commits from your trees, or queue up de3b58bc359a ("l2tp: revert "l2tp: fix missing print session offset info"")? If some of you have 820da5357572 queued up for other trees, then please drop it. Guillaume

7 years, 7 months

2
2
0 0

[PATCH] spi: spi-s3c64xx: Fix system resume support

by Marek Szyprowski

Since Linux v4.10 release (commit 1d9174fbc55e "PM / Runtime: Defer resuming of the device in pm_runtime_force_resume()"), pm_runtime_force_resume() function doesn't runtime resume device if it was not runtime active before system suspend. Thus, driver should not do any register access after pm_runtime_force_resume() without checking the runtime status of the device. To fix this issue, simply move s3c64xx_spi_hwinit() call to s3c64xx_spi_runtime_resume() to ensure that hardware is always properly initialized. This fixes Synchronous external abort issue on system suspend/resume cycle on newer Exynos SoCs. Signed-off-by: Marek Szyprowski <m.szyprowski(a)samsung.com> CC: <stable(a)vger.kernel.org> # 4.10.x: 1c75862d8e5a spi: spi-s3c64xx: Remove unused s3c64xx_spi_hwinit() CC: <stable(a)vger.kernel.org> # 4.10.x Reviewed-by: Krzysztof Kozlowski <krzk(a)kernel.org> Acked-by: Andi Shyti <andi(a)etezian.org> --- Resend reason: added cc: stable, reviewed and acked tags --- drivers/spi/spi-s3c64xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index f55dc78957ad..7b7151ec14c8 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -1292,8 +1292,6 @@ static int s3c64xx_spi_resume(struct device *dev) if (ret < 0) return ret; - s3c64xx_spi_hwinit(sdd); - return spi_master_resume(master); } #endif /* CONFIG_PM_SLEEP */ @@ -1331,6 +1329,8 @@ static int s3c64xx_spi_runtime_resume(struct device *dev) if (ret != 0) goto err_disable_src_clk; + s3c64xx_spi_hwinit(sdd); + return 0; err_disable_src_clk: -- 2.17.0

7 years, 7 months

3
3
0 0

[PATCH ghak82] audit: Fix extended comparison of GID/EGID

by Ondrej Mosnacek

The audit_filter_rules() function in auditsc.c used the in_[e]group_p() functions to check GID/EGID match, but these functions use the current task's credentials, while the comparison should use the credentials of the task given to audit_filter_rules() as a parameter (tsk). Note that we can use group_search(cred->group_info, ...) as a replacement for both in_group_p and in_egroup_p as these functions only compare the parameter to cred->fsgid/egid and then call group_search. In fact, the usage of in_group_p was incorrect also because it compared to cred->fsgid and not cred->gid. GitHub issue: https://github.com/linux-audit/audit-kernel/issues/82 Fixes: 37eebe39c973 ("audit: improve GID/EGID comparation logic") Cc: stable(a)vger.kernel.org Signed-off-by: Ondrej Mosnacek <omosnace(a)redhat.com> --- kernel/auditsc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/kernel/auditsc.c b/kernel/auditsc.c index cbab0da86d15..ec38e4d97c23 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -490,20 +490,20 @@ static int audit_filter_rules(struct task_struct *tsk, result = audit_gid_comparator(cred->gid, f->op, f->gid); if (f->op == Audit_equal) { if (!result) - result = in_group_p(f->gid); + result = groups_search(cred->group_info, f->gid); } else if (f->op == Audit_not_equal) { if (result) - result = !in_group_p(f->gid); + result = !groups_search(cred->group_info, f->gid); } break; case AUDIT_EGID: result = audit_gid_comparator(cred->egid, f->op, f->gid); if (f->op == Audit_equal) { if (!result) - result = in_egroup_p(f->gid); + result = groups_search(cred->group_info, f->gid); } else if (f->op == Audit_not_equal) { if (result) - result = !in_egroup_p(f->gid); + result = !groups_search(cred->group_info, f->gid); } break; case AUDIT_SGID: -- 2.17.0

7 years, 7 months

2
2
0 0

[PATCH v2] mtd: rawnand: Do not check FAIL bit when executing a SET_FEATURES op

by Boris Brezillon

The ONFI spec clearly says that FAIL bit is only valid for PROGRAM, ERASE and READ-with-on-die-ECC operations, and should be ignored otherwise. It seems that checking it after sending a SET_FEATURES is a bad idea because a previous READ, PROGRAM or ERASE op may have failed, and depending on the implementation, the FAIL bit is not cleared until a new READ, PROGRAM or ERASE is started. This leads to ->set_features() returning -EIO while it actually worked, which can sometimes stop a batch of READ/PROGRAM ops. Note that we only fix the ->exec_op() path here, because some drivers are abusing the NAND_STATUS_FAIL flag in their ->waitfunc() implementation to propagate other kind of errors, like wait-ready-timeout or controller-related errors. Let's not try to fix those drivers since they worked fine so far. Fixes: 8878b126df76 ("mtd: nand: add ->exec_op() implementation") Cc: stable(a)vger.kernel.org Signed-off-by: Boris Brezillon <boris.brezillon(a)bootlin.com> --- This patch is fixing a problem we had with on-die ECC on Micron NANDs [1]. On these chips, when you have an ECC failure, the FAIL bit is set and it's not cleared until the next READ operation, which led the following SET_FEATURES (used to re-enable on-die ECC) to fail with -EIO and stopped the batch of page reads started by UBIFS, which in turn led to unmountable FS. [1]http://patchwork.ozlabs.org/patch/907874/ Changes in v2: - Fix the subject prefix --- drivers/mtd/nand/raw/nand_base.c | 27 +++++++++------------------ 1 file changed, 9 insertions(+), 18 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index f28c3a555861..ee29f34562ab 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -2174,7 +2174,6 @@ static int nand_set_features_op(struct nand_chip *chip, u8 feature, struct mtd_info *mtd = nand_to_mtd(chip); const u8 *params = data; int i, ret; - u8 status; if (chip->exec_op) { const struct nand_sdr_timings *sdr = @@ -2188,26 +2187,18 @@ static int nand_set_features_op(struct nand_chip *chip, u8 feature, }; struct nand_operation op = NAND_OPERATION(instrs); - ret = nand_exec_op(chip, &op); - if (ret) - return ret; - - ret = nand_status_op(chip, &status); - if (ret) - return ret; - } else { - chip->cmdfunc(mtd, NAND_CMD_SET_FEATURES, feature, -1); - for (i = 0; i < ONFI_SUBFEATURE_PARAM_LEN; ++i) - chip->write_byte(mtd, params[i]); + return nand_exec_op(chip, &op); + } - ret = chip->waitfunc(mtd, chip); - if (ret < 0) - return ret; + chip->cmdfunc(mtd, NAND_CMD_SET_FEATURES, feature, -1); + for (i = 0; i < ONFI_SUBFEATURE_PARAM_LEN; ++i) + chip->write_byte(mtd, params[i]); - status = ret; - } + ret = chip->waitfunc(mtd, chip); + if (ret < 0) + return ret; - if (status & NAND_STATUS_FAIL) + if (ret & NAND_STATUS_FAIL) return -EIO; return 0; -- 2.14.1

7 years, 7 months

2
2
0 0

[PATCH] ALSA: timer: Fix pause event notification

by Ben Hutchings

Commit f65e0d299807 ("ALSA: timer: Call notifier in the same spinlock") combined the start/continue and stop/pause functions, and in doing so changed the event code for the pause case to SNDRV_TIMER_EVENT_CONTINUE. Change it back to SNDRV_TIMER_EVENT_PAUSE. Fixes: f65e0d299807 ("ALSA: timer: Call notifier in the same spinlock") Signed-off-by: Ben Hutchings <ben.hutchings(a)codethink.co.uk> Cc: stable(a)vger.kernel.org --- sound/core/timer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/core/timer.c b/sound/core/timer.c index dc87728c5b74..0ddcae495838 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -592,7 +592,7 @@ static int snd_timer_stop1(struct snd_timer_instance *timeri, bool stop) else timeri->flags |= SNDRV_TIMER_IFLG_PAUSED; snd_timer_notify1(timeri, stop ? SNDRV_TIMER_EVENT_STOP : - SNDRV_TIMER_EVENT_CONTINUE); + SNDRV_TIMER_EVENT_PAUSE); unlock: spin_unlock_irqrestore(&timer->lock, flags); return result; @@ -614,7 +614,7 @@ static int snd_timer_stop_slave(struct snd_timer_instance *timeri, bool stop) list_del_init(&timeri->ack_list); list_del_init(&timeri->active_list); snd_timer_notify1(timeri, stop ? SNDRV_TIMER_EVENT_STOP : - SNDRV_TIMER_EVENT_CONTINUE); + SNDRV_TIMER_EVENT_PAUSE); spin_unlock(&timeri->timer->lock); } spin_unlock_irqrestore(&slave_active_lock, flags); -- 2.11.0

7 years, 7 months

2
1
0 0

[PATCH] cxl: Disable prefault_mode in Radix mode

by Vaibhav Jain

From: Vaibhav Jain <vaibhav(a)linux.ibm.com> On Power-8 the AFU attr prefault_mode tried to improve storage fault performance by prefaulting process segments. However Power-9 radix mode doesn't have Storage-Segments and prefaulting Pages is too fine grained. So this patch updates prefault_mode_store() to not allow any other value apart from CXL_PREFAULT_NONE when radix mode is enabled. Cc: <stable(a)vger.kernel.org> Fixes: f24be42aab37 ("cxl: Add psl9 specific code") Signed-off-by: Vaibhav Jain <vaibhav(a)linux.ibm.com> --- Documentation/ABI/testing/sysfs-class-cxl | 4 +++- drivers/misc/cxl/sysfs.c | 16 ++++++++++++---- 2 files changed, 15 insertions(+), 5 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-class-cxl b/Documentation/ABI/testing/sysfs-class-cxl index 640f65e79ef1..267920a1874b 100644 --- a/Documentation/ABI/testing/sysfs-class-cxl +++ b/Documentation/ABI/testing/sysfs-class-cxl @@ -69,7 +69,9 @@ Date: September 2014 Contact: linuxppc-dev(a)lists.ozlabs.org Description: read/write Set the mode for prefaulting in segments into the segment table - when performing the START_WORK ioctl. Possible values: + when performing the START_WORK ioctl. Only applicable when + running under hashed page table mmu. + Possible values: none: No prefaulting (default) work_element_descriptor: Treat the work element descriptor as an effective address and diff --git a/drivers/misc/cxl/sysfs.c b/drivers/misc/cxl/sysfs.c index 4b5a4c5d3c01..629e2e156412 100644 --- a/drivers/misc/cxl/sysfs.c +++ b/drivers/misc/cxl/sysfs.c @@ -353,12 +353,20 @@ static ssize_t prefault_mode_store(struct device *device, struct cxl_afu *afu = to_cxl_afu(device); enum prefault_modes mode = -1; - if (!strncmp(buf, "work_element_descriptor", 23)) - mode = CXL_PREFAULT_WED; - if (!strncmp(buf, "all", 3)) - mode = CXL_PREFAULT_ALL; if (!strncmp(buf, "none", 4)) mode = CXL_PREFAULT_NONE; + else { + if (!radix_enabled()) { + + /* only allowed when not in radix mode */ + if (!strncmp(buf, "work_element_descriptor", 23)) + mode = CXL_PREFAULT_WED; + if (!strncmp(buf, "all", 3)) + mode = CXL_PREFAULT_ALL; + } else { + dev_err(device, "Cannot prefault with radix enabled\n"); + } + } if (mode == -1) return -EINVAL; -- 2.17.0

7 years, 7 months

1
0
0 0

2025

2024

2023

2022

2021

2020

2019

2018

2017

Linux-stable-mirror