From: Jan Beulich <jbeulich@suse.com>
Date: Thu, 22 Sep 2011 17:35:30 +0000 (+0100)
Subject: x86: ucode-amd: Don't warn when no ucode is available for a CPU revision
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~9865
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=2f0f0613f62a786c3ea398ec3f743df7c3305fa1;p=xen.git

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@googlemail.com>

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@suse.de>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
---

diff --git a/xen/arch/x86/microcode_amd.c b/xen/arch/x86/microcode_amd.c
index e1b495fc77..2a5ac718ed 100644
--- a/xen/arch/x86/microcode_amd.c
+++ b/xen/arch/x86/microcode_amd.c
@@ -96,11 +96,7 @@ static int microcode_fits(void *mc, int cpu)
     }
 
     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 )
     {