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KVM: introduce KVM_PFN_ERR_HWPOISON 

Then, get_hwpoison_pfn and is_hwpoison_pfn can be removed

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 2012-08-03 15:38:36 +08:00 committed by Avi Kivity
parent 6c8ee57be9
commit e6c1502b3f
3 changed files with 3 additions and 14 deletions
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2
arch/x86/kvm/mmu.c
View File

@ -2649,7 +2649,7 @@ static void kvm_send_hwpoison_signal(unsigned long address, struct task_struct *
static int kvm_handle_bad_page(struct kvm_vcpu *vcpu, gfn_t gfn, pfn_t pfn)
{
kvm_release_pfn_clean(pfn);
if (is_hwpoison_pfn(pfn)) {
if (pfn == KVM_PFN_ERR_HWPOISON) {
kvm_send_hwpoison_signal(gfn_to_hva(vcpu->kvm, gfn), current);
return 0;
}

2
include/linux/kvm_host.h
View File

@ -49,6 +49,7 @@
(KVM_MMIO_SIZE / KVM_USER_MMIO_SIZE + KVM_EXTRA_MMIO_FRAGMENTS)
#define KVM_PFN_ERR_FAULT (-EFAULT)
#define KVM_PFN_ERR_HWPOISON (-EHWPOISON)
/*
* vcpu->requests bit members
@ -395,7 +396,6 @@ extern struct page *bad_page;
int is_error_page(struct page *page);
int is_error_pfn(pfn_t pfn);
int is_hwpoison_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);

13
virt/kvm/kvm_main.c
View File

@ -939,17 +939,6 @@ static pfn_t get_bad_pfn(void)
return -ENOENT;
}
static pfn_t get_hwpoison_pfn(void)
{
return -EHWPOISON;
}
int is_hwpoison_pfn(pfn_t pfn)
{
return pfn == -EHWPOISON;
}
EXPORT_SYMBOL_GPL(is_hwpoison_pfn);
int is_noslot_pfn(pfn_t pfn)
{
return pfn == -ENOENT;
@ -1115,7 +1104,7 @@ static pfn_t hva_to_pfn(unsigned long addr, bool atomic, bool *async,
if (npages == -EHWPOISON ||
(!async && check_user_page_hwpoison(addr))) {
up_read(&current->mm->mmap_sem);
return get_hwpoison_pfn();
return KVM_PFN_ERR_HWPOISON;
}
vma = find_vma_intersection(current->mm, addr, addr+1);