From: Tom Lendacky <thomas.lendacky@amd.com>
Date: Thu, 30 Nov 2017 22:46:40 +0000 (-0600)
Subject: x86/microcode: Add support for fam17h microcode loading
X-Git-Tag: archive/raspbian/4.11.1-1+rpi1~1^2~66^2~918
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=61d458ba8c171809e8dd9abd19339c87f3f934ca;p=xen.git

x86/microcode: Add support for fam17h microcode loading

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>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[Linux commit f4e9b7af0cd58dd039a0fb2cd67d57cea4889abf]

Ported to Xen.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
---

diff --git a/xen/arch/x86/microcode_amd.c b/xen/arch/x86/microcode_amd.c
index b54b0b99e4..53f9f548cd 100644
--- a/xen/arch/x86/microcode_amd.c
+++ b/xen/arch/x86/microcode_amd.c
@@ -107,6 +107,7 @@ static bool_t verify_patch_size(uint32_t 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 (boot_cpu_data.x86)
     {
@@ -119,6 +120,9 @@ static bool_t verify_patch_size(uint32_t 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;