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From: Borislav Petkov <bp@alien8.de>
Date: Sat, 1 Nov 2014 11:01:00 +0100
Subject: [PATCH] x86, microcode, AMD: Fix early ucode loading on 32-bit
Hi guys,
please queue this for the next batch to Linus.
Thanks.
---
arch/x86/kernel/cpu/microcode/amd_early.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/microcode/amd_early.c b/arch/x86/kernel/cpu/microcode/amd_early.c
index 7aa1acc79789..8b75f7050129 100644
--- a/arch/x86/kernel/cpu/microcode/amd_early.c
+++ b/arch/x86/kernel/cpu/microcode/amd_early.c
@@ -348,6 +348,7 @@ int __init save_microcode_in_initrd_amd(void)
{
unsigned long cont;
enum ucode_state ret;
+ u8 *cont_va;
u32 eax;
if (!container)
@@ -355,13 +356,15 @@ int __init save_microcode_in_initrd_amd(void)
#ifdef CONFIG_X86_32
get_bsp_sig();
- cont = (unsigned long)container;
+ cont = (unsigned long)container;
+ cont_va = __va(container);
#else
/*
* We need the physical address of the container for both bitness since
* boot_params.hdr.ramdisk_image is a physical address.
*/
- cont = __pa(container);
+ cont = __pa(container);
+ cont_va = container;
#endif
/*
@@ -372,6 +375,8 @@ int __init save_microcode_in_initrd_amd(void)
if (relocated_ramdisk)
container = (u8 *)(__va(relocated_ramdisk) +
(cont - boot_params.hdr.ramdisk_image));
+ else
+ container = cont_va;
if (ucode_new_rev)
pr_info("microcode: updated early to new patch_level=0x%08x\n",
--
1.9.3
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