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[Xen-changelog] [xen-4.0-testing] x86: ucode-amd: Don't warn when no uco

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Subject: [Xen-changelog] [xen-4.0-testing] x86: ucode-amd: Don't warn when no ucode is available for a CPU
From: Xen patchbot-4.0-testing <patchbot@xxxxxxx>
Date: Mon, 03 Oct 2011 22:22:15 +0100
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# HG changeset patch
# User Jan Beulich <jbeulich@xxxxxxxx>
# Date 1317656147 -3600
# Node ID b66f7152a9cb1a1e086b78e04f9132ea57355353
# Parent  cda1ee31f07bc22b598452dfafd17c729505d4ec
x86: ucode-amd: Don't warn when no ucode is available for a CPU
revision

This patch originally comes from the Linus mainline kernel (2.6.33),
find below the patch details:

From: Andreas Herrmann <herrmann.der.user@xxxxxxxxxxxxxx>

There is no point in warning when there is no ucode available
for a specific CPU revision. Currently the container-file, which
provides the AMD ucode patches for OS load, contains only a few
ucode patches.

It's already clearly indicated by the printed patch_level
whenever new ucode was available and an update happened. So the
warning message is of no help but rather annoying on systems
with many CPUs.

Signed-off-by: Thomas Renninger <trenn@xxxxxxx>
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
xen-unstable changeset:   23871:503ee256fecf
xen-unstable date:        Thu Sep 22 18:35:30 2011 +0100
---


diff -r cda1ee31f07b -r b66f7152a9cb xen/arch/x86/microcode_amd.c
--- a/xen/arch/x86/microcode_amd.c      Mon Oct 03 16:35:33 2011 +0100
+++ b/xen/arch/x86/microcode_amd.c      Mon Oct 03 16:35:47 2011 +0100
@@ -97,11 +97,7 @@
     }
 
     if ( !equiv_cpu_id )
-    {
-        printk(KERN_ERR "microcode: CPU%d cpu_id "
-               "not found in equivalent cpu table\n", cpu);
-        return -EINVAL;
-    }
+           return 0;
 
     if ( (mc_header->processor_rev_id) != equiv_cpu_id )
     {

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