* [PATCH] x86/speculation: Remove Skylake C2 from Speculation Control microcode blacklist
@ 2018-03-13 19:38 Alexander Sergeyev
2018-03-16 11:55 ` [tip:x86/pti] " tip-bot for Alexander Sergeyev
0 siblings, 1 reply; 2+ messages in thread
From: Alexander Sergeyev @ 2018-03-13 19:38 UTC (permalink / raw)
To: Thomas Gleixner, Ingo Molnar, H. Peter Anvin, David Woodhouse,
Kyle Huey, Greg Kroah-Hartman, Jia Zhang
Cc: x86, linux-kernel
In accordance with Intel's microcode revision guidance from March 6 MCU
rev 0xc2 is cleared on both Skylake H/S and Skylake Xeon E3 processors
that share CPUID 506E3.
Signed-off-by: Alexander Sergeyev <sergeev917@gmail.com>
---
arch/x86/kernel/cpu/intel.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index b862067bb33c..3f8d7a3b6447 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -105,7 +105,7 @@ static void probe_xeon_phi_r3mwait(struct cpuinfo_x86 *c)
/*
* Early microcode releases for the Spectre v2 mitigation were broken.
* Information taken from;
- * - https://newsroom.intel.com/wp-content/uploads/sites/11/2018/01/microcode-update-guidance.pdf
+ * - https://newsroom.intel.com/wp-content/uploads/sites/11/2018/03/microcode-update-guidance.pdf
* - https://kb.vmware.com/s/article/52345
* - Microcode revisions observed in the wild
* - Release note from 20180108 microcode release
@@ -123,7 +123,6 @@ static const struct sku_microcode spectre_bad_microcodes[] = {
{ INTEL_FAM6_KABYLAKE_MOBILE, 0x09, 0x80 },
{ INTEL_FAM6_SKYLAKE_X, 0x03, 0x0100013e },
{ INTEL_FAM6_SKYLAKE_X, 0x04, 0x0200003c },
- { INTEL_FAM6_SKYLAKE_DESKTOP, 0x03, 0xc2 },
{ INTEL_FAM6_BROADWELL_CORE, 0x04, 0x28 },
{ INTEL_FAM6_BROADWELL_GT3E, 0x01, 0x1b },
{ INTEL_FAM6_BROADWELL_XEON_D, 0x02, 0x14 },
--
2.16.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [tip:x86/pti] x86/speculation: Remove Skylake C2 from Speculation Control microcode blacklist
2018-03-13 19:38 [PATCH] x86/speculation: Remove Skylake C2 from Speculation Control microcode blacklist Alexander Sergeyev
@ 2018-03-16 11:55 ` tip-bot for Alexander Sergeyev
0 siblings, 0 replies; 2+ messages in thread
From: tip-bot for Alexander Sergeyev @ 2018-03-16 11:55 UTC (permalink / raw)
To: linux-tip-commits
Cc: qianyue.zj, tglx, mingo, linux-kernel, sergeev917, hpa, dwmw, gregkh, me
Commit-ID: e3b3121fa8da94cb20f9e0c64ab7981ae47fd085
Gitweb: https://git.kernel.org/tip/e3b3121fa8da94cb20f9e0c64ab7981ae47fd085
Author: Alexander Sergeyev <sergeev917@gmail.com>
AuthorDate: Tue, 13 Mar 2018 22:38:56 +0300
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Fri, 16 Mar 2018 12:33:11 +0100
x86/speculation: Remove Skylake C2 from Speculation Control microcode blacklist
In accordance with Intel's microcode revision guidance from March 6 MCU
rev 0xc2 is cleared on both Skylake H/S and Skylake Xeon E3 processors
that share CPUID 506E3.
Signed-off-by: Alexander Sergeyev <sergeev917@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jia Zhang <qianyue.zj@alibaba-inc.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Kyle Huey <me@kylehuey.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Link: https://lkml.kernel.org/r/20180313193856.GA8580@localhost.localdomain
---
arch/x86/kernel/cpu/intel.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 4aa9fd379390..c3af167d0a70 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -105,7 +105,7 @@ static void probe_xeon_phi_r3mwait(struct cpuinfo_x86 *c)
/*
* Early microcode releases for the Spectre v2 mitigation were broken.
* Information taken from;
- * - https://newsroom.intel.com/wp-content/uploads/sites/11/2018/01/microcode-update-guidance.pdf
+ * - https://newsroom.intel.com/wp-content/uploads/sites/11/2018/03/microcode-update-guidance.pdf
* - https://kb.vmware.com/s/article/52345
* - Microcode revisions observed in the wild
* - Release note from 20180108 microcode release
@@ -123,7 +123,6 @@ static const struct sku_microcode spectre_bad_microcodes[] = {
{ INTEL_FAM6_KABYLAKE_MOBILE, 0x09, 0x80 },
{ INTEL_FAM6_SKYLAKE_X, 0x03, 0x0100013e },
{ INTEL_FAM6_SKYLAKE_X, 0x04, 0x0200003c },
- { INTEL_FAM6_SKYLAKE_DESKTOP, 0x03, 0xc2 },
{ INTEL_FAM6_BROADWELL_CORE, 0x04, 0x28 },
{ INTEL_FAM6_BROADWELL_GT3E, 0x01, 0x1b },
{ INTEL_FAM6_BROADWELL_XEON_D, 0x02, 0x14 },
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