From 6fd0fcc93b1eaf82911782de5c7aa35c174bf620 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 25 Mar 2013 17:22:51 +0100 Subject: 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 Acked-by: Cornelia Huck Signed-off-by: Cornelia Huck Signed-off-by: Gleb Natapov --- arch/s390/kvm/priv.c | 44 ++++++++++++++------------------------------ 1 file changed, 14 insertions(+), 30 deletions(-) (limited to 'arch/s390/kvm/priv.c') 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; } -- cgit v1.2.3