From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756146Ab2K3IuG (ORCPT ); Fri, 30 Nov 2012 03:50:06 -0500 Received: from mga01.intel.com ([192.55.52.88]:40531 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755879Ab2K3It3 (ORCPT ); Fri, 30 Nov 2012 03:49:29 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.84,191,1355126400"; d="scan'208";a="255459094" From: "Fenghua Yu" To: "H Peter Anvin" , "Ingo Molnar" , "Thomas Gleixner" , "Asit K Mallick" , "Tigran Aivazian" , "Andreas Herrmann" , "Borislav Petkov" , "linux-kernel" , "x86" Cc: "Fenghua Yu" Subject: [PATCH v2 09/10] x86/mm/init.c: Copy ucode from initrd image to memory Date: Thu, 29 Nov 2012 17:47:47 -0800 Message-Id: <1354240068-9821-10-git-send-email-fenghua.yu@intel.com> X-Mailer: git-send-email 1.7.2 In-Reply-To: <1354240068-9821-1-git-send-email-fenghua.yu@intel.com> References: <1354240068-9821-1-git-send-email-fenghua.yu@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Fenghua Yu Before initrd image is freed, copy valid ucode patches from initrd image to kernel virtual memory. The saved ucode will be used to update AP in resume. Signed-off-by: Fenghua Yu --- arch/x86/mm/init.c | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index d7aea41..a294d4b 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -16,6 +16,7 @@ #include #include #include /* for MAX_DMA_PFN */ +#include unsigned long __initdata pgt_buf_start; unsigned long __meminitdata pgt_buf_end; @@ -391,6 +392,15 @@ void free_initmem(void) #ifdef CONFIG_BLK_DEV_INITRD void __init free_initrd_mem(unsigned long start, unsigned long end) { +#ifdef CONFIG_MICROCODE_EARLY + /* + * Remember, initrd memory may contain microcode or other useful things. + * Before we lose initrd mem, we need to find a place to hold them + * now that normal virtual memory is enabled. + */ + save_microcode_in_initrd(&mc_saved_data, mc_saved_in_initrd); +#endif + /* * end could be not aligned, and We can not align that, * decompresser could be confused by aligned initrd_end -- 1.7.2