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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2011-07-12 03:28:54 +0800 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-07-24 11:50:34 +0300 |
| commit | fce92dce79dbf5fff39c7ac2fb149729d79b7a39 (patch) | |
| tree | 455461b843f5f94356786ea0e21132740458588a /include/linux/kvm_host.h | |
| parent | c37079586f317d7e7f1a70d36f0e5177691c89c2 (diff) | |
| download | lwn-fce92dce79dbf5fff39c7ac2fb149729d79b7a39.tar.gz lwn-fce92dce79dbf5fff39c7ac2fb149729d79b7a39.zip | |
KVM: MMU: filter out the mmio pfn from the fault pfn
If the page fault is caused by mmio, the gfn can not be found in memslots, and
'bad_pfn' is returned on gfn_to_hva path, so we can use 'bad_pfn' to identify
the mmio page fault.
And, to clarify the meaning of mmio pfn, we return fault page instead of bad
page when the gfn is not allowd to prefetch
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'include/linux/kvm_host.h')
| -rw-r--r-- | include/linux/kvm_host.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index c8e023902f79..eabb21a30c34 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -327,12 +327,17 @@ static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } extern struct page *bad_page; +extern struct page *fault_page; + extern pfn_t bad_pfn; +extern pfn_t fault_pfn; int is_error_page(struct page *page); int is_error_pfn(pfn_t pfn); int is_hwpoison_pfn(pfn_t pfn); int is_fault_pfn(pfn_t pfn); +int is_noslot_pfn(pfn_t pfn); +int is_invalid_pfn(pfn_t pfn); int kvm_is_error_hva(unsigned long addr); int kvm_set_memory_region(struct kvm *kvm, struct kvm_userspace_memory_region *mem, |