Patch "x86/speculation: Remove Skylake C2 from Speculation Control microcode blacklist" has been added to the 4.15-stable tree

This is a note to let you know that I've just added the patch titled

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

to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
x86-speculation-remove-skylake-c2-from-speculation-control-microcode-blacklist.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Alexander Sergeyev <[email protected]>
Date: Tue, 13 Mar 2018 22:38:56 +0300
Subject: x86/speculation: Remove Skylake C2 from Speculation Control microcode blacklist

From: Alexander Sergeyev <[email protected]>

commit e3b3121fa8da94cb20f9e0c64ab7981ae47fd085 upstream.

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.

---
 arch/x86/kernel/cpu/intel.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

@@ -105,7 +105,7 @@ static void probe_xeon_phi_r3mwait(struc
 /*
  * 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 spectr
 	{ 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 },

Patches currently in stable-queue which might be from [email protected] are

queue-4.15/x86-speculation-remove-skylake-c2-from-speculation-control-microcode-blacklist.patch