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KVM: introduce KVM_HVA_ERR_BAD

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Then, remove bad_hva and inline kvm_is_error_hva

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Xiao Guangrong 2012-08-21 11:01:50 +08:00 • committed by Avi Kivity
parent 69552c295e
commit ca3a490c7d
2 changed files with 8 additions and 13 deletions
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8
include/linux/kvm_host.h
View file

@ -82,6 +82,13 @@ static inline bool is_invalid_pfn(pfn_t pfn)
return !is_noslot_pfn(pfn) && is_error_pfn(pfn); return !is_noslot_pfn(pfn) && is_error_pfn(pfn);
} }
#define KVM_HVA_ERR_BAD (PAGE_OFFSET)
static inline bool kvm_is_error_hva(unsigned long addr)
{
return addr == PAGE_OFFSET;
}
#define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT))
static inline bool is_error_page(struct page *page) static inline bool is_error_page(struct page *page)
@ -430,7 +437,6 @@ id_to_memslot(struct kvm_memslots *slots, int id)
return slot; return slot;
} }
int kvm_is_error_hva(unsigned long addr);
int kvm_set_memory_region(struct kvm *kvm, int kvm_set_memory_region(struct kvm *kvm,
struct kvm_userspace_memory_region *mem, struct kvm_userspace_memory_region *mem,
int user_alloc); int user_alloc);

13
virt/kvm/kvm_main.c
View file

@ -931,17 +931,6 @@ void kvm_disable_largepages(void)
} }
EXPORT_SYMBOL_GPL(kvm_disable_largepages); EXPORT_SYMBOL_GPL(kvm_disable_largepages);
static inline unsigned long bad_hva(void)
{
return PAGE_OFFSET;
}
int kvm_is_error_hva(unsigned long addr)
{
return addr == bad_hva();
}
EXPORT_SYMBOL_GPL(kvm_is_error_hva);
struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn) struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn)
{ {
return __gfn_to_memslot(kvm_memslots(kvm), gfn); return __gfn_to_memslot(kvm_memslots(kvm), gfn);
@ -988,7 +977,7 @@ static unsigned long gfn_to_hva_many(struct kvm_memory_slot *slot, gfn_t gfn,
gfn_t *nr_pages) gfn_t *nr_pages)
{ {
if (!slot || slot->flags & KVM_MEMSLOT_INVALID) if (!slot || slot->flags & KVM_MEMSLOT_INVALID)
return bad_hva(); return KVM_HVA_ERR_BAD;
if (nr_pages) if (nr_pages)
*nr_pages = slot->npages - (gfn - slot->base_gfn); *nr_pages = slot->npages - (gfn - slot->base_gfn);