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Commit e6c1502b authored by Xiao Guangrong's avatar Xiao Guangrong Committed by Avi Kivity
Browse files

KVM: introduce KVM_PFN_ERR_HWPOISON 



Then, get_hwpoison_pfn and is_hwpoison_pfn can be removed

Signed-off-by: default avatarXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 6c8ee57b

arch/x86/kvm/mmu.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

	}

include/linux/kvm_host.h

+1 −1
Original line number Diff line number Diff line
@@ -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);

virt/kvm/kvm_main.c

+1 −12
Original line number Diff line number Diff line
@@ -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);