d3fccc7ef8
This reverts commit 85c8555ff0 ("KVM: check for !is_zero_pfn() in
kvm_is_mmio_pfn()") and renames the function to kvm_is_reserved_pfn.
The problem being addressed by the patch above was that some ARM code
based the memory mapping attributes of a pfn on the return value of
kvm_is_mmio_pfn(), whose name indeed suggests that such pfns should
be mapped as device memory.
However, kvm_is_mmio_pfn() doesn't do quite what it says on the tin,
and the existing non-ARM users were already using it in a way which
suggests that its name should probably have been 'kvm_is_reserved_pfn'
from the beginning, e.g., whether or not to call get_page/put_page on
it etc. This means that returning false for the zero page is a mistake
and the patch above should be reverted.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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| .. | ||
| asm-offsets.c | ||
| irq.h | ||
| Kconfig | ||
| kvm_fw.c | ||
| kvm_lib.c | ||
| kvm_minstate.h | ||
| kvm-ia64.c | ||
| lapic.h | ||
| Makefile | ||
| memcpy.S | ||
| memset.S | ||
| misc.h | ||
| mmio.c | ||
| optvfault.S | ||
| process.c | ||
| trampoline.S | ||
| vcpu.c | ||
| vcpu.h | ||
| vmm_ivt.S | ||
| vmm.c | ||
| vti.h | ||
| vtlb.c | ||