From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754457AbYINMzn (ORCPT ); Sun, 14 Sep 2008 08:55:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753375AbYINMze (ORCPT ); Sun, 14 Sep 2008 08:55:34 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:42045 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753237AbYINMzd (ORCPT ); Sun, 14 Sep 2008 08:55:33 -0400 Date: Sun, 14 Sep 2008 14:55:13 +0200 From: Ingo Molnar To: Dmitry Adamushko Cc: Peter Oruba , Tigran Aivazian , LKML Subject: Re: [x86-tip, patch] rework of the microcode splitup Message-ID: <20080914125513.GA22281@elte.hu> References: <1221383648.6184.28.camel@earth> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1221383648.6184.28.camel@earth> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Dmitry Adamushko wrote: > Ingo, Peter, > > > this version is slightly different from the current one in -tip (added > missing vfree()). i've added the delta patch below. I removed the #if 0's as they are ugly. (and editing the file to enable debug printouts is easy anyway) regarding this FIXME: + /* FIXME! dimm: Why not by means of get_totalsize(hdr)? */ total_size = (unsigned long) (hdr[4] + (hdr[5] << 8)); please just use get_totalsize(hdr) and get rid of the fixme that way :) Ingo ------------------> >>From a1c75cc5018f17ff6d80ce45a13435b1536f76db Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sun, 14 Sep 2008 14:50:26 +0200 Subject: [PATCH] x86, microcode rework, v2, fix based on patch from Dmitry Adamushko. - add missing vfree() - update debug printks Signed-off-by: Ingo Molnar --- arch/x86/kernel/microcode.c | 4 +--- arch/x86/kernel/microcode_amd.c | 6 ++++-- arch/x86/kernel/microcode_intel.c | 4 ++-- 3 files changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/microcode.c b/arch/x86/kernel/microcode.c index 902dada..0c2634f 100644 --- a/arch/x86/kernel/microcode.c +++ b/arch/x86/kernel/microcode.c @@ -70,8 +70,6 @@ * Fix sigmatch() macro to handle old CPUs with pf == 0. * Thanks to Stuart Swales for pointing out this bug. */ - -/* #define DEBUG pr_debug */ #include #include #include @@ -396,7 +394,7 @@ static int mc_sysdev_resume(struct sys_device *dev) if (!cpu_online(cpu)) return 0; - pr_debug("microcode: CPU%d resumed\n", cpu); + /* only CPU 0 will apply ucode here */ microcode_update_cpu(0); return 0; diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c index 6815837..48aec9f 100644 --- a/arch/x86/kernel/microcode_amd.c +++ b/arch/x86/kernel/microcode_amd.c @@ -92,7 +92,7 @@ static int get_matching_microcode(int cpu, void *mc, int rev) unsigned int i = 0; /* - * dimm: do we need this? Why an update via /dev/... is different + * FIXME! dimm: do we need this? Why an update via /dev/... is different * from the one via firmware? * * This is a tricky part. We might be called from a write operation @@ -246,7 +246,7 @@ static void * get_next_ucode(u8 *buf, unsigned int size, return NULL; } - /* Why not by means of get_totalsize(hdr)? */ + /* FIXME! dimm: Why not by means of get_totalsize(hdr)? */ total_size = (unsigned long) (hdr[4] + (hdr[5] << 8)); printk(KERN_INFO "microcode: size %u, total_size %u\n", @@ -342,6 +342,8 @@ static int generic_load_microcode(int cpu, void *data, size_t size, mc_header = (struct microcode_header_amd *)mc; if (get_matching_microcode(cpu, mc, new_rev)) { + if (new_mc) + vfree(new_mc); new_rev = mc_header->patch_id; new_mc = mc; } else diff --git a/arch/x86/kernel/microcode_intel.c b/arch/x86/kernel/microcode_intel.c index f4930b5..48ed3ce 100644 --- a/arch/x86/kernel/microcode_intel.c +++ b/arch/x86/kernel/microcode_intel.c @@ -70,8 +70,6 @@ * Fix sigmatch() macro to handle old CPUs with pf == 0. * Thanks to Stuart Swales for pointing out this bug. */ - -/* #define DEBUG */ /* pr_debug */ #include #include #include @@ -356,6 +354,8 @@ static int generic_load_microcode(int cpu, void *data, size_t size, } if (get_matching_microcode(&uci->cpu_sig, mc, new_rev)) { + if (new_mc) + vfree(new_mc); new_rev = mc_header.rev; new_mc = mc; } else