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authorTom Lendacky <thomas.lendacky@amd.com>2017-11-30 16:46:40 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-01-10 09:29:53 +0100
commitdd43c465ba24d7f482bd50c0ceda50b1740b8dce (patch)
tree332ebaaa9abdded95b6ed30a84de5e3cad8aa6af
parent2b009d33f42797d6ba7ebd23729c34871e1ec7ec (diff)
downloadlinux-linaro-stable-dd43c465ba24d7f482bd50c0ceda50b1740b8dce.tar.gz
x86/microcode/AMD: Add support for fam17h microcode loading
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@amd.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@alien8.de> Link: https://lkml.kernel.org/r/20171130224640.15391.40247.stgit@tlendack-t1.amdoffice.net Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Alice Ferrazzi <alicef@gentoo.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--arch/x86/kernel/cpu/microcode/amd.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index 017bda12caae..b74bb29db6b9 100644
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -592,6 +592,7 @@ static unsigned int verify_patch_size(u8 family, u32 patch_size,
#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:
@@ -603,6 +604,9 @@ static unsigned int verify_patch_size(u8 family, u32 patch_size,
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;