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Date: Tue, 24 Feb 2015 11:37:03 +0100 From: Borislav Petkov <bp@...en8.de> To: X86 ML <x86@...nel.org> Cc: LKML <linux-kernel@...r.kernel.org>, Quentin Casasnovas <quentin.casasnovas@...cle.com> Subject: [PATCH 04/13] x86/microcode/intel: Simplify load_ucode_intel_bsp() From: Borislav Petkov <bp@...e.de> 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. No functionality change. Signed-off-by: Borislav Petkov <bp@...e.de> --- 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 988ef348cb1b..ffeac5d62eca 100644 --- a/arch/x86/kernel/cpu/microcode/intel_early.c +++ b/arch/x86/kernel/cpu/microcode/intel_early.c @@ -555,12 +555,10 @@ 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 @@ -576,7 +574,6 @@ 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); @@ -724,50 +721,40 @@ 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 } -- 2.2.0.33.gc18b867 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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