linux-kernel - [PATCH 03/13] x86/microcode/intel: Get rid of last arg to load_ucode_intel

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Date:	Tue, 24 Feb 2015 11:37:02 +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 03/13] x86/microcode/intel: Get rid of last arg to load_ucode_intel_bsp()

From: Borislav Petkov <bp@...e.de>

Allocate it on the helper's _load_ucode_intel_bsp() stack instead and do
not hand it down.

Signed-off-by: Borislav Petkov <bp@...e.de>
---
 arch/x86/kernel/cpu/microcode/intel_early.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/arch/x86/kernel/cpu/microcode/intel_early.c b/arch/x86/kernel/cpu/microcode/intel_early.c
index 1676c927045b..988ef348cb1b 100644
--- a/arch/x86/kernel/cpu/microcode/intel_early.c
+++ b/arch/x86/kernel/cpu/microcode/intel_early.c
@@ -725,21 +725,21 @@ 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,
-		      struct ucode_cpu_info *uci)
+		      unsigned long initrd_end_early)
 {
+	struct ucode_cpu_info uci;
 	enum ucode_state ret;
 
-	collect_cpu_info_early(uci);
+	collect_cpu_info_early(&uci);
 	scan_microcode(initrd_start_early, initrd_end_early, mc_saved_data,
-		       mc_saved_in_initrd, uci);
+		       mc_saved_in_initrd, &uci);
 
 	ret = load_microcode(mc_saved_data, mc_saved_in_initrd,
-			     initrd_start_early, uci);
+			     initrd_start_early, &uci);
 	if (ret != UCODE_OK)
 		return;
 
-	apply_microcode_early(uci, true);
+	apply_microcode_early(&uci, true);
 }
 
 void __init
@@ -747,7 +747,6 @@ load_ucode_intel_bsp(void)
 {
 	u64 ramdisk_image, ramdisk_size;
 	unsigned long initrd_start_early, initrd_end_early;
-	struct ucode_cpu_info uci;
 #ifdef CONFIG_X86_32
 	struct boot_params *boot_params_p;
 
@@ -760,7 +759,7 @@ load_ucode_intel_bsp(void)
 	_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, &uci);
+		initrd_start_early, initrd_end_early);
 #else
 	ramdisk_image = boot_params.hdr.ramdisk_image;
 	ramdisk_size  = boot_params.hdr.ramdisk_size;
@@ -768,8 +767,7 @@ load_ucode_intel_bsp(void)
 	initrd_end_early = initrd_start_early + ramdisk_size;
 
 	_load_ucode_intel_bsp(&mc_saved_data, mc_saved_in_initrd,
-			      initrd_start_early, initrd_end_early,
-			      &uci);
+			      initrd_start_early, initrd_end_early);
 #endif
 }
 
-- 
2.2.0.33.gc18b867

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