[Xen-changelog] [xen stable-4.6] x86/microcode: Add support for fam17h microcode loading

[patchbot@xxxxxxx]

commit a735c7ae8046024925927406747d4a6ca5bf7fcc
Author:     Tom Lendacky <thomas.lendacky@xxxxxxx>
AuthorDate: Wed Feb 14 12:33:54 2018 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Feb 14 12:33:54 2018 +0100

    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@xxxxxxx>
    Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
    Reviewed-by: Borislav Petkov <bp@xxxxxxxxx>
    Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
    [Linux commit f4e9b7af0cd58dd039a0fb2cd67d57cea4889abf]
    
    Ported to Xen.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
    master commit: 61d458ba8c171809e8dd9abd19339c87f3f934ca
    master date: 2017-12-13 14:30:10 +0000
---
 xen/arch/x86/microcode_amd.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xen/arch/x86/microcode_amd.c b/xen/arch/x86/microcode_amd.c
index a61c926..f97b3de 100644
--- a/xen/arch/x86/microcode_amd.c
+++ b/xen/arch/x86/microcode_amd.c
@@ -108,6 +108,7 @@ 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)
     {
@@ -120,6 +121,9 @@ 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;
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.6

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