diff options
| author | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-11-13 12:09:50 +0100 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-11-19 13:26:53 +0100 |
| commit | 411406a8c758d9ad6f908fab3a6cf1d3d89e1d08 (patch) | |
| tree | 0f2a4ce3466a22c3d62830598c5b37498e0aa343 /arch/mips | |
| parent | 724d554a117a0552c2c982f0b5cd1d685274d678 (diff) | |
MIPS: kvm: Use vm_get_page_prot to get protection bits
MIPS protection bits are setup during runtime so using defines like
PAGE_SHARED ignores this runtime changes. Using vm_get_page_prot
to get correct page protection fixes this.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/kvm/mmu.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/mips/kvm/mmu.c b/arch/mips/kvm/mmu.c index 28c366d307e7..3dabeda82458 100644 --- a/arch/mips/kvm/mmu.c +++ b/arch/mips/kvm/mmu.c @@ -1074,6 +1074,7 @@ int kvm_mips_handle_commpage_tlb_fault(unsigned long badvaddr, { kvm_pfn_t pfn; pte_t *ptep; + pgprot_t prot; ptep = kvm_trap_emul_pte_for_gva(vcpu, badvaddr); if (!ptep) { @@ -1083,7 +1084,8 @@ int kvm_mips_handle_commpage_tlb_fault(unsigned long badvaddr, pfn = PFN_DOWN(virt_to_phys(vcpu->arch.kseg0_commpage)); /* Also set valid and dirty, so refill handler doesn't have to */ - *ptep = pte_mkyoung(pte_mkdirty(pfn_pte(pfn, PAGE_SHARED))); + prot = vm_get_page_prot(VM_READ|VM_WRITE|VM_SHARED); + *ptep = pte_mkyoung(pte_mkdirty(pfn_pte(pfn, prot))); /* Invalidate this entry in the TLB, guest kernel ASID only */ kvm_mips_host_tlb_inv(vcpu, badvaddr, false, true); |