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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2013-03-25 17:22:51 +0100 |
|---|---|---|
| committer |   Gleb Natapov <gleb@redhat.com> | 2013-04-02 16:14:33 +0300 |
| commit | 6fd0fcc93b1eaf82911782de5c7aa35c174bf620 (patch) | |
| tree | 73341520406163d3c0374d7fb17bd843a62b79df /arch | |
| parent | KVM: s390: fix psw conversion in lpsw handler (diff) | |
| download | linux-dev-6fd0fcc93b1eaf82911782de5c7aa35c174bf620.tar.xz linux-dev-6fd0fcc93b1eaf82911782de5c7aa35c174bf620.zip | |
KVM: s390: fix return code handling in lpsw/lpswe handlers
kvm_s390_inject_program_int() may return with a non-zero return value, in
case of an error (out of memory). Report that to the calling functions
instead of ignoring the error case.
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>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kvm/priv.c | 44 |
1 files changed, 14 insertions, 30 deletions
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index 844a2b986112..9d32c56fb02c 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -269,20 +269,14 @@ int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu) addr = kvm_s390_get_base_disp_s(vcpu); - if (addr & 7) { - kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); - goto out; - } + if (addr & 7) + return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); - if (copy_from_guest(vcpu, &new_psw, addr, sizeof(new_psw))) { - kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); - goto out; - } + if (copy_from_guest(vcpu, &new_psw, addr, sizeof(new_psw))) + return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); - if (!(new_psw.mask & PSW32_MASK_BASE)) { - kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); - goto out; - } + if (!(new_psw.mask & PSW32_MASK_BASE)) + return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); vcpu->arch.sie_block->gpsw.mask = (new_psw.mask & ~PSW32_MASK_BASE) << 32; @@ -293,13 +287,10 @@ int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu) (!(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) && (vcpu->arch.sie_block->gpsw.addr & ~PSW_ADDR_24)) || ((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) == - PSW_MASK_EA)) { - kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); - goto out; - } + PSW_MASK_EA)) + return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); handle_new_psw(vcpu); -out: return 0; } @@ -310,15 +301,11 @@ static int handle_lpswe(struct kvm_vcpu *vcpu) addr = kvm_s390_get_base_disp_s(vcpu); - if (addr & 7) { - kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); - goto out; - } + if (addr & 7) + return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); - if (copy_from_guest(vcpu, &new_psw, addr, sizeof(new_psw))) { - kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); - goto out; - } + if (copy_from_guest(vcpu, &new_psw, addr, sizeof(new_psw))) + return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); vcpu->arch.sie_block->gpsw.mask = new_psw.mask; vcpu->arch.sie_block->gpsw.addr = new_psw.addr; @@ -330,13 +317,10 @@ static int handle_lpswe(struct kvm_vcpu *vcpu) (!(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) && (vcpu->arch.sie_block->gpsw.addr & ~PSW_ADDR_24)) || ((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_ADDR_MODE) == - PSW_MASK_EA)) { - kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); - goto out; - } + PSW_MASK_EA)) + return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); handle_new_psw(vcpu); -out: return 0; } |