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{
    "id": 842665,
    "url": "http://patchwork.ozlabs.org/api/patches/842665/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/kvm-ppc/patch/20171129164116.16167-7-christoffer.dall@linaro.org/",
    "project": {
        "id": 23,
        "url": "http://patchwork.ozlabs.org/api/projects/23/?format=api",
        "name": "KVM PowerPC development",
        "link_name": "kvm-ppc",
        "list_id": "kvm-ppc.vger.kernel.org",
        "list_email": "kvm-ppc@vger.kernel.org",
        "web_url": null,
        "scm_url": null,
        "webscm_url": null,
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    },
    "msgid": "<20171129164116.16167-7-christoffer.dall@linaro.org>",
    "list_archive_url": null,
    "date": "2017-11-29T16:41:06",
    "name": "[v2,06/16] KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_get_sregs",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": false,
    "hash": "b937ed16d845efcfabf7c35c2a47a4f5ff6160b7",
    "submitter": {
        "id": 26352,
        "url": "http://patchwork.ozlabs.org/api/people/26352/?format=api",
        "name": "Christoffer Dall",
        "email": "christoffer.dall@linaro.org"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/kvm-ppc/patch/20171129164116.16167-7-christoffer.dall@linaro.org/mbox/",
    "series": [
        {
            "id": 15778,
            "url": "http://patchwork.ozlabs.org/api/series/15778/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/kvm-ppc/list/?series=15778",
            "date": "2017-11-29T16:41:00",
            "name": "Move vcpu_load and vcpu_put calls to arch code",
            "version": 2,
            "mbox": "http://patchwork.ozlabs.org/series/15778/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/842665/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/842665/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<kvm-ppc-owner@vger.kernel.org>",
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        ],
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        "X-Received": "by 10.28.63.9 with SMTP id m9mr3184329wma.137.1511973689102;\n\tWed, 29 Nov 2017 08:41:29 -0800 (PST)",
        "From": "Christoffer Dall <christoffer.dall@linaro.org>",
        "To": "kvm@vger.kernel.org",
        "Cc": "Andrew Jones <drjones@redhat.com>, Christoffer Dall\n\t<christoffer.dall@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>,\n\t=?utf-8?b?UmFkaW0gS3LEjW3DocWZ?= <rkrcmar@redhat.com>,\n\tMarc Zyngier <marc.zyngier@arm.com>, kvmarm@lists.cs.columbia.edu,\n\tlinux-arm-kernel@lists.infradead.org, James Hogan <jhogan@kernel.org>,\n\tlinux-mips@linux-mips.org, Alexander Graf <agraf@suse.com>,\n\tkvm-ppc@vger.kernel.org, \n\tChristian Borntraeger <borntraeger@de.ibm.com>, Cornelia Huck\n\t<cohuck@redhat.com>, linux-s390@vger.kernel.org",
        "Subject": "[PATCH v2 06/16] KVM: Move vcpu_load to arch-specific\n\tkvm_arch_vcpu_ioctl_get_sregs",
        "Date": "Wed, 29 Nov 2017 17:41:06 +0100",
        "Message-Id": "<20171129164116.16167-7-christoffer.dall@linaro.org>",
        "X-Mailer": "git-send-email 2.14.2",
        "In-Reply-To": "<20171129164116.16167-1-christoffer.dall@linaro.org>",
        "References": "<20171129164116.16167-1-christoffer.dall@linaro.org>",
        "Sender": "kvm-ppc-owner@vger.kernel.org",
        "Precedence": "bulk",
        "List-ID": "<kvm-ppc.vger.kernel.org>",
        "X-Mailing-List": "kvm-ppc@vger.kernel.org"
    },
    "content": "Move vcpu_load() and vcpu_put() into the architecture specific\nimplementations of kvm_arch_vcpu_ioctl_get_sregs().\n\nSigned-off-by: Christoffer Dall <christoffer.dall@linaro.org>\n---\n arch/powerpc/kvm/book3s.c | 8 +++++++-\n arch/powerpc/kvm/booke.c  | 9 ++++++++-\n arch/s390/kvm/kvm-s390.c  | 4 ++++\n arch/x86/kvm/x86.c        | 3 +++\n virt/kvm/kvm_main.c       | 2 --\n 5 files changed, 22 insertions(+), 4 deletions(-)",
    "diff": "diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c\nindex 24bc7aa..6cc2377 100644\n--- a/arch/powerpc/kvm/book3s.c\n+++ b/arch/powerpc/kvm/book3s.c\n@@ -484,7 +484,13 @@ void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)\n int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,\n \t\t\t\t  struct kvm_sregs *sregs)\n {\n-\treturn vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);\n+\tint ret;\n+\n+\tvcpu_load(vcpu);\n+\tret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);\n+\tvcpu_put(vcpu);\n+\n+\treturn ret;\n }\n \n int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,\ndiff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c\nindex bcbbedd..f647e12 100644\n--- a/arch/powerpc/kvm/booke.c\n+++ b/arch/powerpc/kvm/booke.c\n@@ -1613,11 +1613,18 @@ int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)\n int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,\n                                   struct kvm_sregs *sregs)\n {\n+\tint ret;\n+\n+\tvcpu_load(vcpu);\n+\n \tsregs->pvr = vcpu->arch.pvr;\n \n \tget_sregs_base(vcpu, sregs);\n \tget_sregs_arch206(vcpu, sregs);\n-\treturn vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);\n+\tret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);\n+\n+\tvcpu_put(vcpu);\n+\treturn ret;\n }\n \n int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,\ndiff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c\nindex e347643..18011fc 100644\n--- a/arch/s390/kvm/kvm-s390.c\n+++ b/arch/s390/kvm/kvm-s390.c\n@@ -2737,8 +2737,12 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,\n int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,\n \t\t\t\t  struct kvm_sregs *sregs)\n {\n+\tvcpu_load(vcpu);\n+\n \tmemcpy(&sregs->acrs, &vcpu->run->s.regs.acrs, sizeof(sregs->acrs));\n \tmemcpy(&sregs->crs, &vcpu->arch.sie_block->gcr, sizeof(sregs->crs));\n+\n+\tvcpu_put(vcpu);\n \treturn 0;\n }\n \ndiff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c\nindex 75eacce..20a5f67 100644\n--- a/arch/x86/kvm/x86.c\n+++ b/arch/x86/kvm/x86.c\n@@ -7400,6 +7400,8 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,\n {\n \tstruct desc_ptr dt;\n \n+\tvcpu_load(vcpu);\n+\n \tkvm_get_segment(vcpu, &sregs->cs, VCPU_SREG_CS);\n \tkvm_get_segment(vcpu, &sregs->ds, VCPU_SREG_DS);\n \tkvm_get_segment(vcpu, &sregs->es, VCPU_SREG_ES);\n@@ -7431,6 +7433,7 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,\n \t\tset_bit(vcpu->arch.interrupt.nr,\n \t\t\t(unsigned long *)sregs->interrupt_bitmap);\n \n+\tvcpu_put(vcpu);\n \treturn 0;\n }\n \ndiff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c\nindex 963e249..779c03e 100644\n--- a/virt/kvm/kvm_main.c\n+++ b/virt/kvm/kvm_main.c\n@@ -2581,9 +2581,7 @@ static long kvm_vcpu_ioctl(struct file *filp,\n \t\tr = -ENOMEM;\n \t\tif (!kvm_sregs)\n \t\t\tgoto out;\n-\t\tvcpu_load(vcpu);\n \t\tr = kvm_arch_vcpu_ioctl_get_sregs(vcpu, kvm_sregs);\n-\t\tvcpu_put(vcpu);\n \t\tif (r)\n \t\t\tgoto out;\n \t\tr = -EFAULT;\n",
    "prefixes": [
        "v2",
        "06/16"
    ]
}