KVM: s390: Replace clear_user with kvm_clear_guest

frankjaa · borntraeger · commit 0230cae75df6 · 2018-07-13T09:48:57.000+02:00
kvm_clear_guest also does the dirty tracking for us, which we want to
have.

Signed-off-by: Janosch Frank &lt;frankja@linux.ibm.com&gt;
Reviewed-by: David Hildenbrand &lt;david@redhat.com&gt;
Acked-by: Christian Borntraeger &lt;borntraeger@de.ibm.com&gt;
Signed-off-by: Christian Borntraeger &lt;borntraeger@de.ibm.com&gt;
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
@@ -956,7 +956,7 @@ static int handle_pfmf(struct kvm_vcpu *vcpu)
 			return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
 
 		if (vcpu->run->s.regs.gprs[reg1] & PFMF_CF) {
-			if (clear_user((void __user *)useraddr, PAGE_SIZE))
+			if (kvm_clear_guest(vcpu->kvm, start, PAGE_SIZE))
 				return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
 		}
 

Original file line number	Diff line number	Diff line change
`@@ -956,7 +956,7 @@ static int handle_pfmf(struct kvm_vcpu *vcpu)`
`956`	`956`	`return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);`
`957`	`957`
`958`	`958`	`if (vcpu->run->s.regs.gprs[reg1] & PFMF_CF) {`
`959`		`- if (clear_user((void __user *)useraddr, PAGE_SIZE))`
	`959`	`+ if (kvm_clear_guest(vcpu->kvm, start, PAGE_SIZE))`
`960`	`960`	`return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);`
`961`	`961`	`}`
`962`	`962`