summaryrefslogtreecommitdiff
path: root/virt
diff options
context:
space:
mode:
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/mmu.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
index 2174244f6317..0417c8e2a81c 100644
--- a/virt/kvm/arm/mmu.c
+++ b/virt/kvm/arm/mmu.c
@@ -1292,7 +1292,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
unsigned long fault_status)
{
int ret;
- bool write_fault, writable, hugetlb = false, force_pte = false;
+ bool write_fault, exec_fault, writable, hugetlb = false, force_pte = false;
unsigned long mmu_seq;
gfn_t gfn = fault_ipa >> PAGE_SHIFT;
struct kvm *kvm = vcpu->kvm;
@@ -1304,7 +1304,10 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
unsigned long flags = 0;
write_fault = kvm_is_write_fault(vcpu);
- if (fault_status == FSC_PERM && !write_fault) {
+ exec_fault = kvm_vcpu_trap_is_iabt(vcpu);
+ VM_BUG_ON(write_fault && exec_fault);
+
+ if (fault_status == FSC_PERM && !write_fault && !exec_fault) {
kvm_err("Unexpected L2 read permission error\n");
return -EFAULT;
}
@@ -1398,7 +1401,11 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
kvm_set_pfn_dirty(pfn);
}
clean_dcache_guest_page(vcpu, pfn, PMD_SIZE);
- invalidate_icache_guest_page(vcpu, pfn, PMD_SIZE);
+
+ if (exec_fault) {
+ new_pmd = kvm_s2pmd_mkexec(new_pmd);
+ invalidate_icache_guest_page(vcpu, pfn, PMD_SIZE);
+ }
ret = stage2_set_pmd_huge(kvm, memcache, fault_ipa, &new_pmd);
} else {
@@ -1410,7 +1417,11 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
mark_page_dirty(kvm, gfn);
}
clean_dcache_guest_page(vcpu, pfn, PAGE_SIZE);
- invalidate_icache_guest_page(vcpu, pfn, PAGE_SIZE);
+
+ if (exec_fault) {
+ new_pte = kvm_s2pte_mkexec(new_pte);
+ invalidate_icache_guest_page(vcpu, pfn, PAGE_SIZE);
+ }
ret = stage2_set_pte(kvm, memcache, fault_ipa, &new_pte, flags);
}