linux-kernel - [PATCH v3 08/10] x86/head64.c: Early update ucode in 64-bit

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Message-Id: <1355654609-16800-9-git-send-email-fenghua.yu@intel.com>
Date:	Sun, 16 Dec 2012 02:43:27 -0800
From:	"Fenghua Yu" <fenghua.yu@...el.com>
To:	"H Peter Anvin" <hpa@...or.com>, "Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Asit K Mallick" <asit.k.mallick@...el.com>,
	"Tigran Aivazian" <tigran@...azian.fsnet.co.uk>,
	"Andreas Herrmann" <andreas.herrmann3@....com>,
	"Borislav Petkov" <borislav.petkov@....com>,
	"Yinghai Lu" <yinghai@...nel.org>,
	"linux-kernel" <linux-kernel@...r.kernel.org>,
	"x86" <x86@...nel.org>
Cc:	"Fenghua Yu" <fenghua.yu@...el.com>
Subject: [PATCH v3 08/10] x86/head64.c: Early update ucode in 64-bit

From: Fenghua Yu <fenghua.yu@...el.com>

This updates ucode in 64-bit mode. Paging and virtual address are working now.

Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
---
 arch/x86/kernel/head64.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 037df57..a512f56 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -25,6 +25,7 @@
 #include <asm/kdebug.h>
 #include <asm/e820.h>
 #include <asm/bios_ebda.h>
+#include <asm/microcode.h>
 
 static void __init zap_identity_mappings(void)
 {
@@ -73,6 +74,11 @@ void __init x86_64_start_kernel(char * real_mode_data)
 	/* clear bss before set_intr_gate with early_idt_handler */
 	clear_bss();
 
+	/*
+	 * Load microcode early on BSP.
+	 */
+	load_ucode_bsp(real_mode_data);
+
 	/* Make NULL pointers segfault */
 	zap_identity_mappings();
 
-- 
1.8.0.1

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