Ard Biesheuvel 85c8555ff0 KVM: check for !is_zero_pfn() in kvm_is_mmio_pfn() ... Read-only memory ranges may be backed by the zero page, so avoid misidentifying it a a MMIO pfn. This fixes another issue I identified when testing QEMU+KVM_UEFI, where a read to an uninitialized emulated NOR flash brought in the zero page, but mapped as a read-write device region, because kvm_is_mmio_pfn() misidentifies it as a MMIO pfn due to its PG_reserved bit being set. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Fixes: b88657674d ("ARM: KVM: user_mem_abort: support stage 2 MMIO page mapping") Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2014-09-14 16:26:05 +02:00
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kvm	KVM: check for !is_zero_pfn() in kvm_is_mmio_pfn()	2014-09-14 16:26:05 +02:00