diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2014-11-10 11:33:55 +0300 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2014-11-25 16:57:26 +0300 |
| commit | 07a9748c78cfc39b54f06125a216b67b9c8f09ed (patch) | |
| tree | efa9d59eaf23aaa6e09cde5f852e30c292df0d32 | |
| parent | 7d39f9e32c761abaa84bef7c4a4d9349ba8638e0 (diff) | |
| download | linux-07a9748c78cfc39b54f06125a216b67b9c8f09ed.tar.xz | |
arm/arm64: kvm: drop inappropriate use of kvm_is_mmio_pfn()
Instead of using kvm_is_mmio_pfn() to decide whether a host region
should be stage 2 mapped with device attributes, add a new static
function kvm_is_device_pfn() that disregards RAM pages with the
reserved bit set, as those should usually not be mapped as device
memory.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| -rw-r--r-- | arch/arm/kvm/mmu.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index 57a403a5c22b..b007438242e2 100644 --- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -834,6 +834,11 @@ static bool kvm_is_write_fault(struct kvm_vcpu *vcpu) return kvm_vcpu_dabt_iswrite(vcpu); } +static bool kvm_is_device_pfn(unsigned long pfn) +{ + return !pfn_valid(pfn); +} + static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, struct kvm_memory_slot *memslot, unsigned long hva, unsigned long fault_status) @@ -904,7 +909,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, if (is_error_pfn(pfn)) return -EFAULT; - if (kvm_is_mmio_pfn(pfn)) + if (kvm_is_device_pfn(pfn)) mem_type = PAGE_S2_DEVICE; spin_lock(&kvm->mmu_lock); |