From: stefano.stabellini@eu.citrix.com
To: linux-kernel@vger.kernel.org
Cc: xen-devel@lists.xensource.com,
Jeremy Fitzhardinge <Jeremy.Fitzhardinge@citrix.com>,
Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: [PATCH v2 10/10] xen: mask the MTRR feature from the cpuid
Date: Mon, 4 Oct 2010 12:28:50 +0100 [thread overview]
Message-ID: <1286191730-3188-10-git-send-email-stefano.stabellini@eu.citrix.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1009301536300.2864@kaball-desktop>
From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
We don't want Linux to think that the cpu supports MTRRs when running
under Xen because MTRR operations could only be performed through
hypercalls.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
arch/x86/xen/enlighten.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 9efb004..d48a32b 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -243,6 +243,7 @@ static __init void xen_init_cpuid_mask(void)
cpuid_leaf1_edx_mask =
~((1 << X86_FEATURE_MCE) | /* disable MCE */
(1 << X86_FEATURE_MCA) | /* disable MCA */
+ (1 << X86_FEATURE_MTRR) | /* disable MTRR */
(1 << X86_FEATURE_ACC)); /* thermal monitoring */
if (!xen_initial_domain())
--
1.5.6.5
prev parent reply other threads:[~2010-10-04 11:28 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-04 11:27 [PATCH v2 00/10] xen: initial domain support Stefano Stabellini
2010-10-04 11:28 ` [PATCH v2 01/10] xen: remap GSIs as pirqs when running as initial domain stefano.stabellini
2010-10-04 19:24 ` Konrad Rzeszutek Wilk
2010-10-05 0:44 ` Install Xen 4.0.1 on Fedora 13 Hui Kang
2010-10-05 5:53 ` Pasi Kärkkäinen
2010-10-05 13:11 ` [Xen-devel] [PATCH v2 01/10] xen: remap GSIs as pirqs when running as initial domain Stefano Stabellini
2010-10-06 16:50 ` Konrad Rzeszutek Wilk
2010-10-06 17:53 ` Stefano Stabellini
2010-10-04 11:28 ` [PATCH v2 02/10] xen: remap MSIs into " stefano.stabellini
2010-10-04 11:28 ` [PATCH v2 03/10] xen: map a dummy page for local apic and ioapic in xen_set_fixmap stefano.stabellini
2010-10-04 11:28 ` [PATCH v2 04/10] xen: use vcpu_ops to setup cpu masks stefano.stabellini
2010-10-04 11:28 ` [PATCH v2 05/10] xen: Initialize xenbus for dom0 stefano.stabellini
2010-10-04 11:28 ` [PATCH v2 06/10] xen: add the direct mapping area for ISA bus access stefano.stabellini
2010-10-04 11:28 ` [PATCH v2 07/10] xen: introduce XEN_DOM0 as a silent option stefano.stabellini
2010-10-04 11:28 ` [PATCH v2 08/10] xen: use host E820 map for dom0 stefano.stabellini
2010-10-04 11:28 ` [PATCH v2 09/10] xen: make hvc_xen console work " stefano.stabellini
2010-10-04 11:28 ` stefano.stabellini [this message]
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