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authorXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>2012-08-03 15:38:36 +0800
committerAvi Kivity <avi@redhat.com>2012-08-06 16:04:52 +0300
commite6c1502b3f933ace20c711ce34ab696f5a67086d (patch)
tree932090452960a599281c3cde96c59917d258f891
parent6c8ee57be9350c5c2cafdd6a99d0462d528676e2 (diff)
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>
-rw-r--r--arch/x86/kvm/mmu.c2
-rw-r--r--include/linux/kvm_host.h2
-rw-r--r--virt/kvm/kvm_main.c13
3 files changed, 3 insertions, 14 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 9cf90c8d5843..d3cdf69da513 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -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;
}
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index ef5554f47486..840f44a096c9 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -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);
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index ef0491645a10..7fce2d5787ae 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -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);