renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-21 11:44:01 +08:00
Code

KVM: s390: Fix epsw instruction decoding

Browse Source 
The handle_epsw() function calculated the first register in the wrong way,
so that it always used r0 by mistake. Now the code uses the common helper
function for decoding the registers of rre functions instead to avoid such
mistakes.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Thomas Huth 2013-06-12 13:54:57 +02:00 committed by Paolo Bonzini
parent b764bb1c50
commit aeb87c3cb7
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/s390/kvm/priv.c
View File

@ -457,8 +457,7 @@ static int handle_epsw(struct kvm_vcpu *vcpu)
{ {
int reg1, reg2; int reg1, reg2;
reg1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 24; kvm_s390_get_regs_rre(vcpu, &reg1, &reg2);
reg2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
/* This basically extracts the mask half of the psw. */ /* This basically extracts the mask half of the psw. */
vcpu->run->s.regs.gprs[reg1] &= 0xffffffff00000000; vcpu->run->s.regs.gprs[reg1] &= 0xffffffff00000000;