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Message-Id: <1286191730-3188-10-git-send-email-stefano.stabellini@eu.citrix.com> Date: Mon, 4 Oct 2010 12:28:50 +0100 From: stefano.stabellini@...citrix.com To: linux-kernel@...r.kernel.org Cc: xen-devel@...ts.xensource.com, Jeremy Fitzhardinge <Jeremy.Fitzhardinge@...rix.com>, Stefano Stabellini <Stefano.Stabellini@...citrix.com>, Stefano Stabellini <stefano.stabellini@...citrix.com> Subject: [PATCH v2 10/10] xen: mask the MTRR feature from the cpuid From: Stefano Stabellini <stefano.stabellini@...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@...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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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