xen-devel

[Top] [All Lists]

[Xen-devel] [PATCH] x86/AMD: don't set ARAT feature flag on family F CPU

from [Jan Beulich]

[Permanent Link][Original]

To:	"xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject:	[Xen-devel] [PATCH] x86/AMD: don't set ARAT feature flag on family F CPUs
From:	"Jan Beulich" <JBeulich@xxxxxxxxxx>
Date:	Thu, 19 May 2011 13:09:09 +0100
Cc:	Borislav Petkov <borislav.petkov@xxxxxxx>
Delivery-date:	Thu, 19 May 2011 05:09:33 -0700
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxxx
List-help:	<mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id:	Xen developer discussion <xen-devel.lists.xensource.com>
List-post:	<mailto:xen-devel@lists.xensource.com>
List-subscribe:	<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe:	<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender:	xen-devel-bounces@xxxxxxxxxxxxxxxxxxx

Following Linux commit 14fb57dccb6e1defe9f89a66f548fcb24c374c1d from
Borislav Petkov.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>

--- a/xen/arch/x86/cpu/amd.c
+++ b/xen/arch/x86/cpu/amd.c
@@ -475,7 +475,7 @@ static void __devinit init_amd(struct cp
 #endif
 
        /* As a rule processors have APIC timer running in deep C states */
-       if (c->x86 >= 0xf && !cpu_has_amd_erratum(c, AMD_ERRATUM_400))
+       if (c->x86 > 0xf && !cpu_has_amd_erratum(c, AMD_ERRATUM_400))
                set_bit(X86_FEATURE_ARAT, c->x86_capability);
 
        /* Prevent TSC drift in non single-processor, single-core platforms. */

x86-AMD-ARAT-adjust.patch
Description: Text document

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

[More with this subject...]

<Prev in Thread]	Current Thread	[Next in Thread>
[Xen-devel] [PATCH] x86/AMD: don't set ARAT feature flag on family F CPUs, Jan Beulich <=

Previous by Date:	[Xen-devel] RE: [PATCH v2 2/2] x86: don't unmask disabled irqs when migrating them, Stefano Stabellini
Next by Date:	[Xen-devel] [tip:x86/irq] x86: Skip migrating IRQF_PER_CPU irqs in fixup_irqs(), tip-bot for Tian, Kevin
Previous by Thread:	[Xen-devel] [PATCH] X86: Fix a little mca bug, Liu, Jinsong
Next by Thread:	[Xen-devel] [tip:x86/irq] x86: Skip migrating IRQF_PER_CPU irqs in fixup_irqs(), tip-bot for Tian, Kevin
Indexes:	[Date] [Thread] [Top] [All Lists]