diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.9.21/0003-x86-speculation-Update-Speculation-Control-microcode.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.9.21/0003-x86-speculation-Update-Speculation-Control-microcode.patch | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0003-x86-speculation-Update-Speculation-Control-microcode.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0003-x86-speculation-Update-Speculation-Control-microcode.patch new file mode 100644 index 00000000..c78b3e80 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.9.21/0003-x86-speculation-Update-Speculation-Control-microcode.patch @@ -0,0 +1,69 @@ +From f01ffef1901eda027651aba518686d44ed9fccf3 Mon Sep 17 00:00:00 2001 +From: David Woodhouse <dwmw@amazon.co.uk> +Date: Sat, 10 Feb 2018 23:39:22 +0000 +Subject: [PATCH 03/12] x86/speculation: Update Speculation Control microcode + blacklist + +commit 1751342095f0d2b36fa8114d8e12c5688c455ac4 upstream. + +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> +Cc: Andy Lutomirski <luto@kernel.org> +Cc: Arjan van de Ven <arjan@linux.intel.com> +Cc: Borislav Petkov <bp@alien8.de> +Cc: Dan Williams <dan.j.williams@intel.com> +Cc: Dave Hansen <dave.hansen@linux.intel.com> +Cc: David Woodhouse <dwmw2@infradead.org> +Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +Cc: Josh Poimboeuf <jpoimboe@redhat.com> +Cc: Linus Torvalds <torvalds@linux-foundation.org> +Cc: Peter Zijlstra <peterz@infradead.org> +Cc: Thomas Gleixner <tglx@linutronix.de> +Cc: arjan.van.de.ven@intel.com +Cc: jmattson@google.com +Cc: karahmed@amazon.de +Cc: kvm@vger.kernel.org +Cc: pbonzini@redhat.com +Cc: rkrcmar@redhat.com +Cc: sironi@amazon.de +Link: http://lkml.kernel.org/r/1518305967-31356-2-git-send-email-dwmw@amazon.co.uk +Signed-off-by: Ingo Molnar <mingo@kernel.org> +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + 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 4097b43..e3b00ac 100644 +--- a/arch/x86/kernel/cpu/intel.c ++++ b/arch/x86/kernel/cpu/intel.c +@@ -82,8 +82,6 @@ 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 }, +@@ -95,8 +93,6 @@ 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 + |