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| author | Thomas Huth <thuth@linux.vnet.ibm.com> | 2014-11-10 15:59:32 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-11-28 12:32:38 +0100 |
| commit | a02689fecdbc36503b1496a5d36707bb4559db63 (patch) | |
| tree | 225175dd04de2c0eb5b7432ff8fcc79ab3c8b06d /arch/s390/kvm | |
| parent | b65d6e17fe2239c9b2051727903955d922083fbf (diff) | |
| download | linux-a02689fecdbc36503b1496a5d36707bb4559db63.tar.bz2 | |
KVM: s390: Small fixes for the PFMF handler
This patch includes two small fixes for the PFMF handler: First, the
start address for PFMF has to be masked according to the current
addressing mode, which is now done with kvm_s390_logical_to_effective().
Second, the protection exceptions have a lower priority than the
specification exceptions, so the check for low-address protection
has to be moved after the last spot where we inject a specification
exception.
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.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, 7 insertions, 4 deletions
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index 9bde32f66eb5..04f70fde9636 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -646,10 +646,7 @@ static int handle_pfmf(struct kvm_vcpu *vcpu) return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); start = vcpu->run->s.regs.gprs[reg2] & PAGE_MASK; - if (vcpu->run->s.regs.gprs[reg1] & PFMF_CF) { - if (kvm_s390_check_low_addr_protection(vcpu, start)) - return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm); - } + start = kvm_s390_logical_to_effective(vcpu, start); switch (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC) { case 0x00000000: @@ -665,6 +662,12 @@ static int handle_pfmf(struct kvm_vcpu *vcpu) default: return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); } + + if (vcpu->run->s.regs.gprs[reg1] & PFMF_CF) { + if (kvm_s390_check_low_addr_protection(vcpu, start)) + return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm); + } + while (start < end) { unsigned long useraddr, abs_addr; |