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KVM: x86: apply guest MTRR virtualization on host reserved pages
Currently guest MTRR is avoided if kvm_is_reserved_pfn returns true. However, the guest could prefer a different page type than UC for such pages. A good example is that pass-throughed VGA frame buffer is not always UC as host expected. This patch enables full use of virtual guest MTRRs. Suggested-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Tested-by: Joerg Roedel <jroedel@suse.de> (on AMD) Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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