Messages in this thread Patch in this message |  | | From | "Fenghua Yu" <> | Subject | [PATCH v5 11/12] x86/mm/init.c: Copy ucode from initrd image to kernel memory | Date | Thu, 20 Dec 2012 23:44:31 -0800 |
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From: Fenghua Yu <fenghua.yu@intel.com>
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: Fenghua Yu <fenghua.yu@intel.com> --- arch/x86/mm/init.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 5f59473..36bad16 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -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" @@ -555,6 +556,15 @@ 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 -- 1.8.0.1
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