patches/kernel/0241-x86-microcode-AMD-Add-support-for-fam17h-microcode-l.patch

   1 From 674b72ef0eb73751e4f838dc789e4c393d225834 Mon Sep 17 00:00:00 2001
   2 From: Tom Lendacky <thomas.lendacky@amd.com>
   3 Date: Thu, 30 Nov 2017 16:46:40 -0600
   4 Subject: [PATCH 241/242] x86/microcode/AMD: Add support for fam17h microcode
   5  loading
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   9
  10 commit f4e9b7af0cd58dd039a0fb2cd67d57cea4889abf upstream.
  11
  12 The size for the Microcode Patch Block (MPB) for an AMD family 17h
  13 processor is 3200 bytes.  Add a #define for fam17h so that it does
  14 not default to 2048 bytes and fail a microcode load/update.
  15
  16 Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
  17 Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
  18 Reviewed-by: Borislav Petkov <bp@alien8.de>
  19 Link: https://lkml.kernel.org/r/20171130224640.15391.40247.stgit@tlendack-t1.amdoffice.net
  20 Signed-off-by: Ingo Molnar <mingo@kernel.org>
  21 Cc: Alice Ferrazzi <alicef@gentoo.org>
  22 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  23 Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
  24 ---
  25  arch/x86/kernel/cpu/microcode/amd.c | 4 ++++
  26  1 file changed, 4 insertions(+)
  27
  28 diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
  29 index 21b185793c80..248cad00fee6 100644
  30 --- a/arch/x86/kernel/cpu/microcode/amd.c
  31 +++ b/arch/x86/kernel/cpu/microcode/amd.c
  32 @@ -467,6 +467,7 @@ static unsigned int verify_patch_size(u8 family, u32 patch_size,
  33  #define F14H_MPB_MAX_SIZE 1824
  34  #define F15H_MPB_MAX_SIZE 4096
  35  #define F16H_MPB_MAX_SIZE 3458
  36 +#define F17H_MPB_MAX_SIZE 3200
  37
  38         switch (family) {
  39         case 0x14:
  40 @@ -478,6 +479,9 @@ static unsigned int verify_patch_size(u8 family, u32 patch_size,
  41         case 0x16:
  42                 max_size = F16H_MPB_MAX_SIZE;
  43                 break;
  44 +       case 0x17:
  45 +               max_size = F17H_MPB_MAX_SIZE;
  46 +               break;
  47         default:
  48                 max_size = F1XH_MPB_MAX_SIZE;
  49                 break;
  50 --
  51 2.14.2
  52