From patchwork Mon Mar 25 16:22:51 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 2332191 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id AB9A6E014B for ; Mon, 25 Mar 2013 16:23:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758641Ab3CYQXg (ORCPT ); Mon, 25 Mar 2013 12:23:36 -0400 Received: from e06smtp11.uk.ibm.com ([195.75.94.107]:37751 "EHLO e06smtp11.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758619Ab3CYQXJ (ORCPT ); Mon, 25 Mar 2013 12:23:09 -0400 Received: from /spool/local by e06smtp11.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Mon, 25 Mar 2013 16:20:09 -0000 Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by d06dlp01.portsmouth.uk.ibm.com (Postfix) with ESMTP id F284717D8017; Mon, 25 Mar 2013 16:23:48 +0000 (GMT) Received: from d06av02.portsmouth.uk.ibm.com (d06av02.portsmouth.uk.ibm.com [9.149.37.228]) by b06cxnps4076.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r2PGMs0j22675542; Mon, 25 Mar 2013 16:22:54 GMT Received: from d06av02.portsmouth.uk.ibm.com (loopback [127.0.0.1]) by d06av02.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r2PGN21O003394; Mon, 25 Mar 2013 10:23:03 -0600 Received: from tuxmaker.boeblingen.de.ibm.com (tuxmaker.boeblingen.de.ibm.com [9.152.85.9]) by d06av02.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id r2PGMxJw003285; Mon, 25 Mar 2013 10:23:01 -0600 From: Cornelia Huck To: Marcelo Tosatti , Gleb Natapov Cc: Christian Borntraeger , Carsten Otte , Alexander Graf , Heiko Carstens , Martin Schwidefsky , KVM , linux-s390 Subject: [PATCH 04/11] KVM: s390: fix return code handling in lpsw/lpswe handlers Date: Mon, 25 Mar 2013 17:22:51 +0100 Message-Id: <1364228578-20528-5-git-send-email-cornelia.huck@de.ibm.com> X-Mailer: git-send-email 1.7.12.4 In-Reply-To: <1364228578-20528-1-git-send-email-cornelia.huck@de.ibm.com> References: <1364228578-20528-1-git-send-email-cornelia.huck@de.ibm.com> X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13032516-5024-0000-0000-000005913710 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Heiko Carstens 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 --- arch/s390/kvm/priv.c | 44 ++++++++++++++------------------------------ 1 file changed, 14 insertions(+), 30 deletions(-) diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index 844a2b9..9d32c56 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; }