linux-kernel - [tip:x86/microcode] x86/head64.c: Early update ucode in 64-bit

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Message-ID: <tip-b8f3111a12c190ab8228718e766dd2707b6fc8e0@git.kernel.org>
Date:	Fri, 30 Nov 2012 16:27:22 -0800
From:	tip-bot for Fenghua Yu <fenghua.yu@...el.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	fenghua.yu@...el.com, tglx@...utronix.de, hpa@...ux.intel.com
Subject: [tip:x86/microcode] x86/head64.c: Early update ucode in 64-bit

Commit-ID:  b8f3111a12c190ab8228718e766dd2707b6fc8e0
Gitweb:     http://git.kernel.org/tip/b8f3111a12c190ab8228718e766dd2707b6fc8e0
Author:     Fenghua Yu <fenghua.yu@...el.com>
AuthorDate: Thu, 29 Nov 2012 17:47:45 -0800
Committer:  H. Peter Anvin <hpa@...ux.intel.com>
CommitDate: Fri, 30 Nov 2012 15:18:16 -0800

x86/head64.c: Early update ucode in 64-bit

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

Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
Link: http://lkml.kernel.org/r/1354240068-9821-8-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.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();
 
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