diff mbox

[03/11] KVM: s390: fix psw conversion in lpsw handler

Message ID 1364228578-20528-4-git-send-email-cornelia.huck@de.ibm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Cornelia Huck March 25, 2013, 4:22 p.m. UTC 
From: Heiko Carstens <heiko.carstens@de.ibm.com>

When converting a 64 bit psw to a 128 bit psw the addressing mode bit of
the "addr" part of the 64 bit psw must be moved to the basic addressing
mode bit of the "mask" part of the 128 bit psw.
In addition the addressing mode bit must be cleared when moved to the "addr"
part of the 128 bit psw.
Otherwise an invalid psw would be generated if the orginal psw was in the
31 bit addressing mode.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
 arch/s390/kvm/priv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 7b397b3..844a2b9 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -286,7 +286,8 @@  int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu)
 
 	vcpu->arch.sie_block->gpsw.mask =
 		(new_psw.mask & ~PSW32_MASK_BASE) << 32;
-	vcpu->arch.sie_block->gpsw.addr = new_psw.addr;
+	vcpu->arch.sie_block->gpsw.mask |= new_psw.addr & PSW32_ADDR_AMODE;
+	vcpu->arch.sie_block->gpsw.addr = new_psw.addr & ~PSW32_ADDR_AMODE;
 
 	if ((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_UNASSIGNED) ||
 	    (!(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) &&