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[PATCH v4.9.y 00/27] arm64 meltdown patches

by Mark Rutland

Hi Greg, These patches backport KPTI to v4.9.y (based on v4.9.92), providing protection against meltdown on arm64 platforms. I picked up Alex Shi's backport for review and testing, and as I found a couple of issues to fix up, I'm sending this with my Signed-off-by in the chain, with those fixups applied and noted. To the best of my understanding the code is correct, in the context of the v4.9.y kernel, and I've tested the seires on arm64 hardware available to me. i.e. if this didn't have my Signed-off-by it would have my Reviewed-by and Tested-by tags. Are you happy to pick these up for v4.9.93? Thanks, Mark. AKASHI Takahiro (1): module: extend 'rodata=off' boot cmdline parameter to module mappings Jayachandran C (2): arm64: cputype: Add MIDR values for Cavium ThunderX2 CPUs arm64: Turn on KPTI only on CPUs that need it Marc Zyngier (2): arm64: Allow checking of a CPU-local erratum arm64: Force KPTI to be disabled on Cavium ThunderX Mark Rutland (1): arm64: factor out entry stack manipulation Suzuki K Poulose (1): arm64: capabilities: Handle duplicate entries for a capability Will Deacon (20): arm64: mm: Use non-global mappings for kernel space arm64: mm: Move ASID from TTBR0 to TTBR1 arm64: mm: Allocate ASIDs in pairs arm64: mm: Add arm64_kernel_unmapped_at_el0 helper arm64: mm: Invalidate both kernel and user ASIDs when performing TLBI arm64: entry: Add exception trampoline page for exceptions from EL0 arm64: mm: Map entry trampoline into trampoline and kernel page tables arm64: entry: Explicitly pass exception level to kernel_ventry macro arm64: entry: Hook up entry trampoline to exception vectors arm64: tls: Avoid unconditional zeroing of tpidrro_el0 for native tasks arm64: entry: Add fake CPU feature for unmapping the kernel at EL0 arm64: kaslr: Put kernel vectors address in separate data page arm64: use RET instruction for exiting the trampoline arm64: Kconfig: Add CONFIG_UNMAP_KERNEL_AT_EL0 arm64: Kconfig: Reword UNMAP_KERNEL_AT_EL0 kconfig entry arm64: Take into account ID_AA64PFR0_EL1.CSV3 arm64: kpti: Make use of nG dependent on arm64_kernel_unmapped_at_el0() arm64: kpti: Add ->enable callback to remap swapper using nG mappings arm64: entry: Reword comment about post_ttbr_update_workaround arm64: idmap: Use "awx" flags for .idmap.text .pushsection directives arch/arm64/Kconfig | 12 ++ arch/arm64/include/asm/assembler.h | 3 + arch/arm64/include/asm/cpucaps.h | 3 +- arch/arm64/include/asm/cputype.h | 3 + arch/arm64/include/asm/fixmap.h | 6 + arch/arm64/include/asm/mmu.h | 11 ++ arch/arm64/include/asm/mmu_context.h | 7 ++ arch/arm64/include/asm/pgtable-hwdef.h | 1 + arch/arm64/include/asm/pgtable-prot.h | 35 +++--- arch/arm64/include/asm/pgtable.h | 1 + arch/arm64/include/asm/proc-fns.h | 6 - arch/arm64/include/asm/sysreg.h | 1 + arch/arm64/include/asm/tlbflush.h | 16 ++- arch/arm64/kernel/asm-offsets.c | 6 +- arch/arm64/kernel/cpu-reset.S | 2 +- arch/arm64/kernel/cpufeature.c | 135 ++++++++++++++++++--- arch/arm64/kernel/entry.S | 188 ++++++++++++++++++++++++---- arch/arm64/kernel/head.S | 2 +- arch/arm64/kernel/process.c | 12 +- arch/arm64/kernel/sleep.S | 2 +- arch/arm64/kernel/vmlinux.lds.S | 22 +++- arch/arm64/mm/context.c | 25 ++-- arch/arm64/mm/mmu.c | 31 +++++ arch/arm64/mm/proc.S | 216 +++++++++++++++++++++++++++++++-- include/linux/init.h | 3 + init/main.c | 7 +- kernel/module.c | 20 ++- 27 files changed, 675 insertions(+), 101 deletions(-) -- 2.11.0

7 years, 2 months

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Re: [PATCH v2] Btrfs: fix NULL pointer dereference in log_dir_items

by Sasha Levin

Hi. [This is an automated email] This commit has been processed by the -stable helper bot and determined to be a high probability candidate for -stable trees. (score: 9.9156) The bot has tested the following trees: v4.15.15, v4.14.32, v4.9.92, v4.4.126, v4.15.15: Build OK! v4.14.32: Build OK! v4.9.92: Build OK! v4.4.126: Build OK! Please let us know if you'd like to have this patch included in a stable tree. -- Thanks. Sasha

7 years, 2 months

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[PATCH] drm/i915/dp: Send DPCD ON for MST before phy_up

by Lyude Paul

As it turns out, the aux block being off was not the real problem here, as transition from D3 to D0 is mandated by the DP spec to take a maximum of 1ms, whereas we're allowed a 100ms timeframe to respond to ESI irqs. The real problem here is a bit more subtle. When doing a modeset where the problem of the sink timing out to our sideband requests when transitioning from D3 to D0 occurs, the timeout is from the aux block not coming on. However, nothing else times out other than the initial phy_up message because the DPCD on call in intel_ddi_enable_dp() ends up waking up the AUX block on the hub, not the phy_up sideband message. This means that the real fix we need is to use the DPMS on before sending a phy_up to ensure that the hub is ready to accept sideband messages. Signed-off-by: Lyude Paul <lyude(a)redhat.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan(a)intel.com> Cc: Ville Syrjälä <ville.syrjala(a)linux.intel.com> Cc: Laura Abbott <labbott(a)redhat.com> Cc: stable(a)vger.kernel.org Fixes: ad260ab32a4d9 ("drm/i915/dp: Write to SET_POWER dpcd to enable MST hub.") --- drivers/gpu/drm/i915/intel_ddi.c | 6 +++++- drivers/gpu/drm/i915/intel_dp_mst.c | 1 + 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index a6672a9abd85..9bd675f73f7b 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -2324,7 +2324,11 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder, intel_prepare_dp_ddi_buffers(encoder, crtc_state); intel_ddi_init_dp_buf_reg(encoder); - intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); + /* for MST, we do DPMS_ON outside of here so that DPMS_ON can happen + * before drm_dp_send_power_updown_phy() + */ + if (!intel_dp->is_mst) + intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); intel_dp_start_link_train(intel_dp); if (port != PORT_A || INTEL_GEN(dev_priv) >= 9) intel_dp_stop_link_train(intel_dp); diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c index c3de0918ee13..eff9a4eae1f0 100644 --- a/drivers/gpu/drm/i915/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/intel_dp_mst.c @@ -223,6 +223,7 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder, DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); + intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port, true); if (intel_dp->active_mst_links == 0) intel_dig_port->base.pre_enable(&intel_dig_port->base, -- 2.14.3

7 years, 2 months

3
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Re: [PATCH] Add Second Fan Support for Thinkpad P50

by Sasha Levin

Hi. [This is an automated email] This commit has been processed by the -stable helper bot and determined to be a high probability candidate for -stable trees. (score: 9.2381) The bot has tested the following trees: v4.15.15, v4.14.32, v4.9.92, v4.4.126, v4.15.15: Build OK! v4.14.32: Build OK! v4.9.92: Build OK! v4.4.126: Build OK! Please let us know if you'd like to have this patch included in a stable tree. -- Thanks. Sasha

7 years, 2 months

2
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Re: [PATCH] usbip: vhci_hcd: Fix usb device and sockfd leaks

by Sasha Levin

Hi. [This is an automated email] This commit has been processed by the -stable helper bot and determined to be a high probability candidate for -stable trees. (score: 10.6103) The bot has tested the following trees: v4.15.15, v4.14.32, v4.9.92, v4.4.126, v4.15.15: Build OK! v4.14.32: Build OK! v4.9.92: Build OK! v4.4.126: Failed to apply! Possible dependencies: f0f1beb8f155 ("usbip: vhci_hcd: Fix usb device and sockfd leaks") Please let us know if you'd like to have this patch included in a stable tree. -- Thanks. Sasha

7 years, 2 months

2
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Re: [PATCH 5/6] clocksource/drivers/imx-tpm: Correct some registers operation flow

by Sasha Levin

Hi. [This is an automated email] This commit has been processed by the -stable helper bot and determined to be a high probability candidate for -stable trees. (score: 11.8806) The bot has tested the following trees: v4.15.15, v4.14.32, v4.9.92, v4.4.126, v4.15.15: Build OK! v4.14.32: Build OK! v4.9.92: Failed to apply! Possible dependencies: 506a7be93ff7 ("clocksource/drivers/imx-tpm: Correct some registers operation flow") v4.4.126: Failed to apply! Possible dependencies: 506a7be93ff7 ("clocksource/drivers/imx-tpm: Correct some registers operation flow") Please let us know if you'd like to have this patch included in a stable tree. -- Thanks. Sasha

7 years, 2 months

1
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Re: [PATCH 3/5] MIPS: perf: Fix perf with MT counting other threads

by Sasha Levin

Hi. [This is an automated email] This commit has been processed by the -stable helper bot and determined to be a high probability candidate for -stable trees. (score: 16.4885) The bot has tested the following trees: v4.15.15, v4.14.32, v4.9.92, v4.4.126, v4.15.15: Failed to apply! Possible dependencies: e2a7b77d89f6 ("MIPS: perf: Fix perf with MT counting other threads") v4.14.32: Failed to apply! Possible dependencies: e2a7b77d89f6 ("MIPS: perf: Fix perf with MT counting other threads") v4.9.92: Failed to apply! Possible dependencies: 4e099ca64578 ("MIPS: perf: Use correct VPE ID when setting up VPE tracing") e2a7b77d89f6 ("MIPS: perf: Fix perf with MT counting other threads") v4.4.126: Failed to apply! Possible dependencies: 4e099ca64578 ("MIPS: perf: Use correct VPE ID when setting up VPE tracing") e2a7b77d89f6 ("MIPS: perf: Fix perf with MT counting other threads") Please let us know if you'd like to have this patch included in a stable tree. -- Thanks. Sasha

7 years, 2 months

1
0
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Re: [PATCH 1/5] MIPS: perf: More robustly probe for the presence of per-tc counters

by Sasha Levin

Hi. [This is an automated email] This commit has been processed by the -stable helper bot and determined to be a high probability candidate for -stable trees. (score: 7.7428) The bot has tested the following trees: v4.15.15, v4.14.32, v4.9.92, v4.4.126, v4.15.15: Build OK! v4.14.32: Build OK! v4.9.92: Build OK! v4.4.126: Failed to apply! Possible dependencies: dddf796db4e3 ("MIPS: perf: More robustly probe for the presence of per-tc counters") Please let us know if you'd like to have this patch included in a stable tree. -- Thanks. Sasha

7 years, 2 months

1
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Re: [PATCH 2/2] usb: dwc2: gadget: Change default values

by Sasha Levin

Hi. [This is an automated email] This commit has been processed by the -stable helper bot and determined to be a high probability candidate for -stable trees. (score: 8.8219) The bot has tested the following trees: v4.15.15, v4.14.32, v4.9.92, v4.4.126, v4.15.15: Failed to apply! Possible dependencies: 808260f0b5d6 ("usb: dwc2: gadget: Change default values") v4.14.32: Failed to apply! Possible dependencies: 808260f0b5d6 ("usb: dwc2: gadget: Change default values") v4.9.92: Failed to apply! Possible dependencies: 6f80b6de0ecf ("usb: dwc2: Add core parameters for LPM support") 808260f0b5d6 ("usb: dwc2: gadget: Change default values") v4.4.126: Failed to apply! Possible dependencies: 6f80b6de0ecf ("usb: dwc2: Add core parameters for LPM support") 808260f0b5d6 ("usb: dwc2: gadget: Change default values") Please let us know if you'd like to have this patch included in a stable tree. -- Thanks. Sasha

7 years, 2 months

1
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Re: [PATCH 0/2] usb: dwc2: gadget: Fixes for LPM

by Sasha Levin

Hi. [This is an automated email] This commit has been processed by the -stable helper bot and determined to be a high probability candidate for -stable trees. (score: 8.8219) The bot has tested the following trees: v4.15.15, v4.14.32, v4.9.92, v4.4.126, v4.15.15: Failed to apply! Possible dependencies: 9fca971e94df ("usb: dwc2: gadget: Change default values") v4.14.32: Failed to apply! Possible dependencies: 9fca971e94df ("usb: dwc2: gadget: Change default values") v4.9.92: Failed to apply! Possible dependencies: 6f80b6de0ecf ("usb: dwc2: Add core parameters for LPM support") 9fca971e94df ("usb: dwc2: gadget: Change default values") v4.4.126: Failed to apply! Possible dependencies: 6f80b6de0ecf ("usb: dwc2: Add core parameters for LPM support") 9fca971e94df ("usb: dwc2: gadget: Change default values") Please let us know if you'd like to have this patch included in a stable tree. -- Thanks. Sasha

7 years, 2 months

1
0
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