Commit 47d45d9f authored by Zhouyi Zhou's avatar Zhouyi Zhou Committed by Alexander Graf

KVM: PPC: NULL return of kvmppc_mmu_hpte_cache_next should be handled

NULL return of kvmppc_mmu_hpte_cache_next should be handled
Signed-off-by: default avatarZhouyi Zhou <yizhouzhou@ict.ac.cn>
Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
parent 9bd880a2
...@@ -243,6 +243,11 @@ int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *orig_pte, ...@@ -243,6 +243,11 @@ int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *orig_pte,
/* Now tell our Shadow PTE code about the new page */ /* Now tell our Shadow PTE code about the new page */
pte = kvmppc_mmu_hpte_cache_next(vcpu); pte = kvmppc_mmu_hpte_cache_next(vcpu);
if (!pte) {
kvm_release_pfn_clean(hpaddr >> PAGE_SHIFT);
r = -EAGAIN;
goto out;
}
dprintk_mmu("KVM: %c%c Map 0x%llx: [%lx] 0x%llx (0x%llx) -> %lx\n", dprintk_mmu("KVM: %c%c Map 0x%llx: [%lx] 0x%llx (0x%llx) -> %lx\n",
orig_pte->may_write ? 'w' : '-', orig_pte->may_write ? 'w' : '-',
......
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