diff options
| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2016-04-13 15:47:21 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-06-10 12:07:29 +0200 |
| commit | 2c26d1d23abd9a67d056c95a0823132a71edc477 (patch) | |
| tree | ebc5b10f84d5750549851f3d9ad002d3f3fdf91b /arch/s390/kvm | |
| parent | 9a68f0af8cd907452fa6c33343d38cdacff96294 (diff) | |
| download | linux-stable-2c26d1d23abd9a67d056c95a0823132a71edc477.tar.gz linux-stable-2c26d1d23abd9a67d056c95a0823132a71edc477.tar.bz2 linux-stable-2c26d1d23abd9a67d056c95a0823132a71edc477.zip | |
KVM: s390: pfmf: take care of amode when setting reg2
Depending on the addressing mode, we must not overwrite bit 0-31 of the
register. In addition, 24 bit and 31 bit have to set certain bits to 0,
which is guaranteed by converting the end address to an effective
address.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm')
| -rw-r--r-- | arch/s390/kvm/priv.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index 5c926b74d7ca..71fa603034d0 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -733,8 +733,15 @@ static int handle_pfmf(struct kvm_vcpu *vcpu) start += PAGE_SIZE; } - if (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC) - vcpu->run->s.regs.gprs[reg2] = end; + if (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC) { + if (psw_bits(vcpu->arch.sie_block->gpsw).eaba == PSW_AMODE_64BIT) { + vcpu->run->s.regs.gprs[reg2] = end; + } else { + vcpu->run->s.regs.gprs[reg2] &= ~0xffffffffUL; + end = kvm_s390_logical_to_effective(vcpu, end); + vcpu->run->s.regs.gprs[reg2] |= end; + } + } return 0; } |