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| author |   Sean Christopherson <sean.j.christopherson@intel.com> | 2020-01-07 16:12:10 -0800 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2020-01-21 14:45:33 +0100 |
| commit | e30a7d623dccdb3f880fbcad980b0cb589a1da45 (patch) | |
| tree | 9e7b362920fc8d26dd0acc223139cc034c18a2db /virt/kvm/kvm_main.c | |
| parent | KVM: nVMX: vmread should not set rflags to specify success in case of #PF (diff) | |
| download | linux-dev-e30a7d623dccdb3f880fbcad980b0cb589a1da45.tar.xz linux-dev-e30a7d623dccdb3f880fbcad980b0cb589a1da45.zip | |
KVM: x86/mmu: Apply max PA check for MMIO sptes to 32-bit KVM
Remove the bogus 64-bit only condition from the check that disables MMIO
spte optimization when the system supports the max PA, i.e. doesn't have
any reserved PA bits. 32-bit KVM always uses PAE paging for the shadow
MMU, and per Intel's SDM:
PAE paging translates 32-bit linear addresses to 52-bit physical
addresses.
The kernel's restrictions on max physical addresses are limits on how
much memory the kernel can reasonably use, not what physical addresses
are supported by hardware.
Fixes: ce88decffd17 ("KVM: MMU: mmio page fault support")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm/kvm_main.c')
0 files changed, 0 insertions, 0 deletions