Messages in this thread Patch in this message | | | Date | Mon, 25 Jul 2016 14:36:43 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start |
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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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