Commit-ID: 02f35177fb00ee0d73f9af2d6006af6b75b58c11
Gitweb: http://git.kernel.org/tip/02f35177fb00ee0d73f9af2d6006af6b75b58c11
Author: Borislav Petkov <bp@xxxxxxx>
AuthorDate: Mon, 9 Feb 2015 22:59:51 +0100
Committer: Borislav Petkov <bp@xxxxxxx>
CommitDate: Mon, 2 Mar 2015 20:31:51 +0100
x86/microcode/intel: Simplify load_ucode_intel_bsp()
Don't compute start and end from start and size in order to compute size
again down the path in scan_microcode(). So pass size directly instead
and simplify a bunch. Shorten variable names and remove useless ones.
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
---
arch/x86/kernel/cpu/microcode/intel_early.c | 49 +++++++++++------------------
1 file changed, 18 insertions(+), 31 deletions(-)
diff --git a/arch/x86/kernel/cpu/microcode/intel_early.c b/arch/x86/kernel/cpu/microcode/intel_early.c
index ed30bc7..34a2ff9 100644
--- a/arch/x86/kernel/cpu/microcode/intel_early.c
+++ b/arch/x86/kernel/cpu/microcode/intel_early.c
@@ -552,12 +552,10 @@ EXPORT_SYMBOL_GPL(save_mc_for_early);
static __initdata char ucode_name[] = "kernel/x86/microcode/GenuineIntel.bin";
static __init enum ucode_state
-scan_microcode(unsigned long start, unsigned long end,
- struct mc_saved_data *mc_saved_data,
- unsigned long *mc_saved_in_initrd,
- struct ucode_cpu_info *uci)
+scan_microcode(unsigned long start, unsigned long size,
+ struct mc_saved_data *mc_saved_data,
+ unsigned long *mc_saved_in_initrd, struct ucode_cpu_info *uci)
{
- unsigned int size = end - start + 1;
struct cpio_data cd;
long offset = 0;
#ifdef CONFIG_X86_32
@@ -573,7 +571,6 @@ scan_microcode(unsigned long start, unsigned long end,
if (!cd.data)
return UCODE_ERROR;
-
return get_matching_model_microcode(0, start, cd.data, cd.size,
mc_saved_data, mc_saved_in_initrd,
uci);
@@ -721,50 +718,40 @@ int __init save_microcode_in_initrd_intel(void)
static void __init
_load_ucode_intel_bsp(struct mc_saved_data *mc_saved_data,
unsigned long *mc_saved_in_initrd,
- unsigned long initrd_start_early,
- unsigned long initrd_end_early)
+ unsigned long start, unsigned long size)
{
struct ucode_cpu_info uci;
enum ucode_state ret;
collect_cpu_info_early(&uci);
- scan_microcode(initrd_start_early, initrd_end_early, mc_saved_data,
- mc_saved_in_initrd, &uci);
+ scan_microcode(start, size, mc_saved_data, mc_saved_in_initrd, &uci);
- ret = load_microcode(mc_saved_data, mc_saved_in_initrd,
- initrd_start_early, &uci);
+ ret = load_microcode(mc_saved_data, mc_saved_in_initrd, start, &uci);
if (ret != UCODE_OK)
return;
apply_microcode_early(&uci, true);
}
-void __init
-load_ucode_intel_bsp(void)
+void __init load_ucode_intel_bsp(void)
{
- u64 ramdisk_image, ramdisk_size;
- unsigned long initrd_start_early, initrd_end_early;
+ u64 start, size;
#ifdef CONFIG_X86_32
- struct boot_params *boot_params_p;
+ struct boot_params *p;
- boot_params_p = (struct boot_params *)__pa_nodebug(&boot_params);
- ramdisk_image = boot_params_p->hdr.ramdisk_image;
- ramdisk_size = boot_params_p->hdr.ramdisk_size;
- initrd_start_early = ramdisk_image;
- initrd_end_early = initrd_start_early + ramdisk_size;
+ p = (struct boot_params *)__pa_nodebug(&boot_params);
+ start = p->hdr.ramdisk_image;
+ size = p->hdr.ramdisk_size;
_load_ucode_intel_bsp(
- (struct mc_saved_data *)__pa_nodebug(&mc_saved_data),
- (unsigned long *)__pa_nodebug(&mc_saved_in_initrd),
- initrd_start_early, initrd_end_early);
+ (struct mc_saved_data *)__pa_nodebug(&mc_saved_data),
+ (unsigned long *)__pa_nodebug(&mc_saved_in_initrd),
+ start, size);
#else
- ramdisk_image = boot_params.hdr.ramdisk_image;
- ramdisk_size = boot_params.hdr.ramdisk_size;
- initrd_start_early = ramdisk_image + PAGE_OFFSET;
- initrd_end_early = initrd_start_early + ramdisk_size;
+ start = boot_params.hdr.ramdisk_image + PAGE_OFFSET;
+ size = boot_params.hdr.ramdisk_size;
- _load_ucode_intel_bsp(&mc_saved_data, mc_saved_in_initrd,
- initrd_start_early, initrd_end_early);
+ _load_ucode_intel_bsp(&mc_saved_data, mc_saved_in_initrd, start, size);
#endif
}
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