Commit e3b3121f authored by Alexander Sergeyev's avatar Alexander Sergeyev Committed by Thomas Gleixner

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: default avatarAlexander Sergeyev <sergeev917@gmail.com>
Signed-off-by: default avatarThomas 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
parent af1d830b
...@@ -105,7 +105,7 @@ static void probe_xeon_phi_r3mwait(struct cpuinfo_x86 *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. * Early microcode releases for the Spectre v2 mitigation were broken.
* Information taken from; * 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 * - https://kb.vmware.com/s/article/52345
* - Microcode revisions observed in the wild * - Microcode revisions observed in the wild
* - Release note from 20180108 microcode release * - Release note from 20180108 microcode release
...@@ -123,7 +123,6 @@ static const struct sku_microcode spectre_bad_microcodes[] = { ...@@ -123,7 +123,6 @@ static const struct sku_microcode spectre_bad_microcodes[] = {
{ INTEL_FAM6_KABYLAKE_MOBILE, 0x09, 0x80 }, { INTEL_FAM6_KABYLAKE_MOBILE, 0x09, 0x80 },
{ INTEL_FAM6_SKYLAKE_X, 0x03, 0x0100013e }, { INTEL_FAM6_SKYLAKE_X, 0x03, 0x0100013e },
{ INTEL_FAM6_SKYLAKE_X, 0x04, 0x0200003c }, { INTEL_FAM6_SKYLAKE_X, 0x04, 0x0200003c },
{ INTEL_FAM6_SKYLAKE_DESKTOP, 0x03, 0xc2 },
{ INTEL_FAM6_BROADWELL_CORE, 0x04, 0x28 }, { INTEL_FAM6_BROADWELL_CORE, 0x04, 0x28 },
{ INTEL_FAM6_BROADWELL_GT3E, 0x01, 0x1b }, { INTEL_FAM6_BROADWELL_GT3E, 0x01, 0x1b },
{ INTEL_FAM6_BROADWELL_XEON_D, 0x02, 0x14 }, { INTEL_FAM6_BROADWELL_XEON_D, 0x02, 0x14 },
......
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