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| author | Thomas Huth <thuth@linux.vnet.ibm.com> | 2013-09-09 15:58:38 (GMT) |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-04-29 13:01:53 (GMT) |
| commit | fb34c603655fafdd244227cb6b42d006469735fc (patch) | |
| tree | 4352670d011b6d87febbdc6515dab93c18f85546 /arch/s390/kvm/priv.c | |
| parent | f8232c8cf720074c0eb0804202d424a2b7b4ee76 (diff) | |
| download | linux-fb34c603655fafdd244227cb6b42d006469735fc.tar.xz | |
KVM: s390: Fixes for PFMF
Add a check for low-address protection to the PFMF handler and
convert real-addresses to absolute if necessary, as it is defined
in the Principles of Operations specification.
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/priv.c')
| -rw-r--r-- | arch/s390/kvm/priv.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index 27f9051..a47157b 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -650,6 +650,11 @@ 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); + } + switch (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC) { case 0x00000000: end = (start + (1UL << 12)) & ~((1UL << 12) - 1); @@ -665,10 +670,15 @@ static int handle_pfmf(struct kvm_vcpu *vcpu) return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); } while (start < end) { - unsigned long useraddr; - - useraddr = gmap_translate(start, vcpu->arch.gmap); - if (IS_ERR((void *)useraddr)) + unsigned long useraddr, abs_addr; + + /* Translate guest address to host address */ + if ((vcpu->run->s.regs.gprs[reg1] & PFMF_FSC) == 0) + abs_addr = kvm_s390_real_to_abs(vcpu, start); + else + abs_addr = start; + useraddr = gfn_to_hva(vcpu->kvm, gpa_to_gfn(abs_addr)); + if (kvm_is_error_hva(useraddr)) return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); if (vcpu->run->s.regs.gprs[reg1] & PFMF_CF) { |