[PATCH] x86/speculation: Remove Skylake C2 from Speculation Control microcode blacklist

[Alexander Sergeyev]

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 
---
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,   0x023c },
-   { 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

[PATCH] x86/speculation: Remove Skylake C2 from Speculation Control microcode blacklist

[Alexander Sergeyev]

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 
---
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,   0x023c },
-   { 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