From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Wed, 1 Jan 2014 15:52:47 +0000 (+0100)
Subject: KVM: s390: convert handle_store_prefix()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f748f4a7ec549febb76e86082d9445beff1e9b01;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

KVM: s390: convert handle_store_prefix()

Convert handle_store_prefix() to new guest access functions.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---

diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 9648504d7818..306caa27b962 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -106,6 +106,7 @@ static int handle_store_prefix(struct kvm_vcpu *vcpu)
 {
 	u64 operand2;
 	u32 address;
+	int rc;
 
 	vcpu->stat.instruction_stpx++;
 
@@ -122,8 +123,9 @@ static int handle_store_prefix(struct kvm_vcpu *vcpu)
 	address = address & 0x7fffe000u;
 
 	/* get the value */
-	if (put_guest(vcpu, address, (u32 __user *)operand2))
-		return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+	rc = write_guest(vcpu, operand2, &address, sizeof(address));
+	if (rc)
+		return kvm_s390_inject_prog_cond(vcpu, rc);
 
 	VCPU_EVENT(vcpu, 5, "storing prefix to %x", address);
 	trace_kvm_s390_handle_prefix(vcpu, 0, address);