This is a note to let you know that I've just added the patch titled
x86/microcode/AMD: Add support for fam17h microcode loading
to the 4.4-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-microcode-amd-add-support-for-fam17h-microcode-loading.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f4e9b7af0cd58dd039a0fb2cd67d57cea4889abf Mon Sep 17 00:00:00 2001
From: Tom Lendacky <thomas.lendacky@xxxxxxx>
Date: Thu, 30 Nov 2017 16:46:40 -0600
Subject: x86/microcode/AMD: Add support for fam17h microcode loading
From: Tom Lendacky <thomas.lendacky@xxxxxxx>
commit f4e9b7af0cd58dd039a0fb2cd67d57cea4889abf upstream.
The size for the Microcode Patch Block (MPB) for an AMD family 17h
processor is 3200 bytes. Add a #define for fam17h so that it does
not default to 2048 bytes and fail a microcode load/update.
Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Borislav Petkov <bp@xxxxxxxxx>
Link: https://lkml.kernel.org/r/20171130224640.15391.40247.stgit@xxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Alice Ferrazzi <alicef@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/cpu/microcode/amd.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -580,6 +580,7 @@ static unsigned int verify_patch_size(u8
#define F14H_MPB_MAX_SIZE 1824
#define F15H_MPB_MAX_SIZE 4096
#define F16H_MPB_MAX_SIZE 3458
+#define F17H_MPB_MAX_SIZE 3200
switch (family) {
case 0x14:
@@ -591,6 +592,9 @@ static unsigned int verify_patch_size(u8
case 0x16:
max_size = F16H_MPB_MAX_SIZE;
break;
+ case 0x17:
+ max_size = F17H_MPB_MAX_SIZE;
+ break;
default:
max_size = F1XH_MPB_MAX_SIZE;
break;
Patches currently in stable-queue which might be from thomas.lendacky@xxxxxxx are
queue-4.4/x86-microcode-amd-add-support-for-fam17h-microcode-loading.patch