lkml.org 
[lkml]   [2018]   [Feb]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    SubjectRe: [PATCH v2 1/6] x86/speculation: Update Speculation Control microcode blacklist
    On Sat, Feb 10, 2018 at 11:39:22PM +0000, David Woodhouse wrote:
    >Intel have retroactively blessed the 0xc2 microcode on Skylake mobile
    >and desktop parts, and the Gemini Lake 0x22 microcode is apparently fine
    >too. We blacklisted the latter purely because it was present with all
    >the other problematic ones in the 2018-01-08 release, but now it's
    >explicitly listed as OK.
    >
    >We still list 0x84 for the various Kaby Lake / Coffee Lake parts, as
    >that appeared in one version of the blacklist and then reverted to
    >0x80 again. We can change it if 0x84 is actually announced to be safe.
    >
    >Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>

    Reviewed-by: Darren Kenny <darren.kenny@oracle.com>

    >---
    > arch/x86/kernel/cpu/intel.c | 4 ----
    > 1 file changed, 4 deletions(-)
    >
    >diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
    >index 319bf98..f73b814 100644
    >--- a/arch/x86/kernel/cpu/intel.c
    >+++ b/arch/x86/kernel/cpu/intel.c
    >@@ -123,8 +123,6 @@ static const struct sku_microcode spectre_bad_microcodes[] = {
    > { INTEL_FAM6_KABYLAKE_MOBILE, 0x09, 0x84 },
    > { INTEL_FAM6_SKYLAKE_X, 0x03, 0x0100013e },
    > { INTEL_FAM6_SKYLAKE_X, 0x04, 0x0200003c },
    >- { INTEL_FAM6_SKYLAKE_MOBILE, 0x03, 0xc2 },
    >- { 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 },
    >@@ -136,8 +134,6 @@ static const struct sku_microcode spectre_bad_microcodes[] = {
    > { INTEL_FAM6_HASWELL_X, 0x02, 0x3b },
    > { INTEL_FAM6_HASWELL_X, 0x04, 0x10 },
    > { INTEL_FAM6_IVYBRIDGE_X, 0x04, 0x42a },
    >- /* Updated in the 20180108 release; blacklist until we know otherwise */
    >- { INTEL_FAM6_ATOM_GEMINI_LAKE, 0x01, 0x22 },
    > /* Observed in the wild */
    > { INTEL_FAM6_SANDYBRIDGE_X, 0x06, 0x61b },
    > { INTEL_FAM6_SANDYBRIDGE_X, 0x07, 0x712 },
    >--
    >2.7.4
    >

    \
     
     \ /
      Last update: 2018-02-12 10:52    [W:4.181 / U:0.100 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site