2018-01-15 11:26:15 +00:00
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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2018-01-08 09:25:31 +00:00
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From: Tom Lendacky <thomas.lendacky@amd.com>
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Date: Thu, 30 Nov 2017 16:46:40 -0600
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2018-01-15 11:26:15 +00:00
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Subject: [PATCH] x86/microcode/AMD: Add support for fam17h microcode loading
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2018-01-08 09:25:31 +00:00
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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commit f4e9b7af0cd58dd039a0fb2cd67d57cea4889abf upstream.
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The size for the Microcode Patch Block (MPB) for an AMD family 17h
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processor is 3200 bytes. Add a #define for fam17h so that it does
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not default to 2048 bytes and fail a microcode load/update.
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Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Reviewed-by: Borislav Petkov <bp@alien8.de>
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Link: https://lkml.kernel.org/r/20171130224640.15391.40247.stgit@tlendack-t1.amdoffice.net
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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Cc: Alice Ferrazzi <alicef@gentoo.org>
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
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---
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arch/x86/kernel/cpu/microcode/amd.c | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
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index 21b185793c80..248cad00fee6 100644
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--- a/arch/x86/kernel/cpu/microcode/amd.c
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+++ b/arch/x86/kernel/cpu/microcode/amd.c
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@@ -467,6 +467,7 @@ static unsigned int verify_patch_size(u8 family, u32 patch_size,
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#define F14H_MPB_MAX_SIZE 1824
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#define F15H_MPB_MAX_SIZE 4096
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#define F16H_MPB_MAX_SIZE 3458
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+#define F17H_MPB_MAX_SIZE 3200
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switch (family) {
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case 0x14:
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@@ -478,6 +479,9 @@ static unsigned int verify_patch_size(u8 family, u32 patch_size,
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case 0x16:
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max_size = F16H_MPB_MAX_SIZE;
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break;
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+ case 0x17:
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+ max_size = F17H_MPB_MAX_SIZE;
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+ break;
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default:
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max_size = F1XH_MPB_MAX_SIZE;
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break;
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--
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2.14.2
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