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| author | Zhouyi Zhou <zhouzhouyi@gmail.com> | 2013-12-02 18:21:58 +0800 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-01-09 10:15:11 +0100 |
| commit | 47d45d9f53a7c478fc83dff7b421cb4bc3ad9f94 (patch) | |
| tree | aa1c9bd15c3045184201d1dc573946653dafa3bd /arch/powerpc | |
| parent | 9bd880a2c882d2181b1eaba0aed422cced8f0e8a (diff) | |
| download | linux-47d45d9f53a7c478fc83dff7b421cb4bc3ad9f94.tar.gz linux-47d45d9f53a7c478fc83dff7b421cb4bc3ad9f94.tar.xz | |
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: Zhouyi Zhou <yizhouzhou@ict.ac.cn>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kvm/book3s_32_mmu_host.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_32_mmu_host.c b/arch/powerpc/kvm/book3s_32_mmu_host.c index 3a0abd2e5a15..5fac89dfe4cd 100644 --- a/arch/powerpc/kvm/book3s_32_mmu_host.c +++ b/arch/powerpc/kvm/book3s_32_mmu_host.c @@ -243,6 +243,11 @@ next_pteg: /* Now tell our Shadow PTE code about the new page */ 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", orig_pte->may_write ? 'w' : '-', |