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Groups > linux.kernel > #1449447
| From | Borislav Petkov <bp@alien8.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start |
| Date | 2016-07-25 14:40 +0200 |
| Message-ID | <rYNkR-4yZ-9@gated-at.bofh.it> (permalink) |
| References | <rYtct-Zv-5@gated-at.bofh.it> <rYIbv-1BM-1@gated-at.bofh.it> <rYKmZ-2Pk-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Mon, Jul 25, 2016 at 11:24:31AM +0200, Nicolai Stange wrote:
> I tested on linux-next-20160722 (I wrote this below the '---' marker).
Ok, thanks.
So let's try something simpler first. That works in my kvm guest here,
can you test it on your box too please?
---
diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c
index 6515c802346a..b98e016ba5fc 100644
--- a/arch/x86/kernel/cpu/microcode/intel.c
+++ b/arch/x86/kernel/cpu/microcode/intel.c
@@ -793,10 +793,10 @@ void __init load_ucode_intel_bsp(void)
void load_ucode_intel_ap(void)
{
struct ucode_blobs *blobs_p;
+ unsigned long *ptrs, start;
struct mc_saved_data *mcs;
struct ucode_cpu_info uci;
enum ucode_state ret;
- unsigned long *ptrs;
#ifdef CONFIG_X86_32
mcs = (struct mc_saved_data *)__pa_nodebug(&mc_saved_data);
@@ -815,8 +815,14 @@ void load_ucode_intel_ap(void)
if (!mcs->num_saved)
return;
+ /*
+ * Pay attention to CONFIG_RANDOMIZE_MEMORY as it shuffles physmem
+ * mapping too.
+ */
+ start = blobs_p->start + (PAGE_OFFSET - __PAGE_OFFSET_BASE);
+
collect_cpu_info_early(&uci);
- ret = load_microcode(mcs, ptrs, blobs_p->start, &uci);
+ ret = load_microcode(mcs, ptrs, start, &uci);
if (ret != UCODE_OK)
return;
---
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
--
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[PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Nicolai Stange <nicstange@gmail.com> - 2016-07-24 17:10 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Borislav Petkov <bp@alien8.de> - 2016-07-25 09:10 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Nicolai Stange <nicstange@gmail.com> - 2016-07-25 11:30 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Borislav Petkov <bp@alien8.de> - 2016-07-25 14:40 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Nicolai Stange <nicstange@gmail.com> - 2016-07-25 15:00 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Nicolai Stange <nicstange@gmail.com> - 2016-07-25 15:10 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Borislav Petkov <bp@alien8.de> - 2016-07-25 15:50 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Nicolai Stange <nicstange@gmail.com> - 2016-07-25 16:20 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Nicolai Stange <nicstange@gmail.com> - 2016-07-25 16:30 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Borislav Petkov <bp@alien8.de> - 2016-07-25 18:50 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Borislav Petkov <bp@alien8.de> - 2016-07-25 17:10 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Borislav Petkov <bp@alien8.de> - 2016-07-25 18:50 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Nicolai Stange <nicstange@gmail.com> - 2016-07-25 19:50 +0200
Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start Borislav Petkov <bp@alien8.de> - 2016-07-25 20:20 +0200
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