[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen master] x86/EPT: relax treatment of APIC MFN
commit 1f8b57779785bf9f55c16312bb1ec679929c314b Author: Jan Beulich <jbeulich@xxxxxxxx> AuthorDate: Fri Mar 28 13:43:25 2014 +0100 Commit: Jan Beulich <jbeulich@xxxxxxxx> CommitDate: Fri Mar 28 13:43:25 2014 +0100 x86/EPT: relax treatment of APIC MFN There's no point in this being mapped UC by the guest due to using a respective PAT index - set the ignore-PAT flag to true. Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> Reviewed-by: Tim Deegan <tim@xxxxxxx> --- xen/arch/x86/hvm/mtrr.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) diff --git a/xen/arch/x86/hvm/mtrr.c b/xen/arch/x86/hvm/mtrr.c index 170c8c1..df52a54 100644 --- a/xen/arch/x86/hvm/mtrr.c +++ b/xen/arch/x86/hvm/mtrr.c @@ -719,8 +719,12 @@ uint8_t epte_get_entry_emt(struct domain *d, unsigned long gfn, mfn_t mfn, } if ( direct_mmio ) - return mfn_x(mfn) != d->arch.hvm_domain.vmx.apic_access_mfn - ? MTRR_TYPE_UNCACHABLE : MTRR_TYPE_WRBACK; + { + if ( mfn_x(mfn) != d->arch.hvm_domain.vmx.apic_access_mfn ) + return MTRR_TYPE_UNCACHABLE; + *ipat = 1; + return MTRR_TYPE_WRBACK; + } if ( iommu_snoop ) { -- generated by git-patchbot for /home/xen/git/xen.git#master _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxx http://lists.xensource.com/xen-changelog
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