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| author | Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> | 2012-08-03 07:42:10 (GMT) |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-08-06 13:04:57 (GMT) |
| commit | cb9aaa30b133574b646d9d4766ef08a843211393 (patch) | |
| tree | 214d3b1dd115573d1aea11d2f4dafe525a1ac674 /virt/kvm | |
| parent | 6cede2e6794be6b0649f62d3681e0c4aff5a9270 (diff) | |
| download | linux-cb9aaa30b133574b646d9d4766ef08a843211393.tar.xz | |
KVM: do not release the error pfn
After commit a2766325cf9f9, the error pfn is replaced by the
error code, it need not be released anymore
[ The patch has been compiling tested for powerpc ]
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/iommu.c | 1 | ||||
| -rw-r--r-- | virt/kvm/kvm_main.c | 14 |
2 files changed, 8 insertions, 7 deletions
diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c index 6a67bea..037cb67 100644 --- a/virt/kvm/iommu.c +++ b/virt/kvm/iommu.c @@ -107,7 +107,6 @@ int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot) */ pfn = kvm_pin_pages(slot, gfn, page_size); if (is_error_pfn(pfn)) { - kvm_release_pfn_clean(pfn); gfn += 1; continue; } diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 93d3c6e..eafba99 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -102,9 +102,6 @@ static bool largepages_enabled = true; bool kvm_is_mmio_pfn(pfn_t pfn) { - if (is_error_pfn(pfn)) - return false; - if (pfn_valid(pfn)) { int reserved; struct page *tail = pfn_to_page(pfn); @@ -1165,10 +1162,13 @@ EXPORT_SYMBOL_GPL(gfn_to_page_many_atomic); static struct page *kvm_pfn_to_page(pfn_t pfn) { - WARN_ON(kvm_is_mmio_pfn(pfn)); + if (is_error_pfn(pfn)) + return KVM_ERR_PTR_BAD_PAGE; - if (is_error_pfn(pfn) || kvm_is_mmio_pfn(pfn)) + if (kvm_is_mmio_pfn(pfn)) { + WARN_ON(1); return KVM_ERR_PTR_BAD_PAGE; + } return pfn_to_page(pfn); } @@ -1193,7 +1193,9 @@ EXPORT_SYMBOL_GPL(kvm_release_page_clean); void kvm_release_pfn_clean(pfn_t pfn) { - if (!is_error_pfn(pfn) && !kvm_is_mmio_pfn(pfn)) + WARN_ON(is_error_pfn(pfn)); + + if (!kvm_is_mmio_pfn(pfn)) put_page(pfn_to_page(pfn)); } EXPORT_SYMBOL_GPL(kvm_release_pfn_clean); |