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Commit cd745be8 authored by Fenghua Yu's avatar Fenghua Yu Committed by H. Peter Anvin
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x86/mm/init.c: Copy ucode from initrd image to kernel memory 



Before initrd image is freed, copy valid ucode patches from initrd image
to kernel memory. The saved ucode will be used to update AP in resume
or hotplug.

Signed-off-by: default avatarFenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1356075872-3054-12-git-send-email-fenghua.yu@intel.com


Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
parent feddc9de

arch/x86/mm/init.c

+10 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <asm/tlb.h>

#include <asm/proto.h>

#include <asm/dma.h>		/* for MAX_DMA_PFN */

#include <asm/microcode.h>



#include "mm_internal.h"
@@ -534,6 +535,15 @@ void free_initmem(void) 
#ifdef CONFIG_BLK_DEV_INITRD

void __init free_initrd_mem(unsigned long start, unsigned long end)

{

#ifdef CONFIG_MICROCODE_EARLY

	/*

	 * Remember, initrd memory may contain microcode or other useful things.

	 * Before we lose initrd mem, we need to find a place to hold them

	 * now that normal virtual memory is enabled.

	 */

	save_microcode_in_initrd();

#endif



	/*

	 * end could be not aligned, and We can not align that,

	 * decompresser could be confused by aligned initrd_end