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{
    "id": 842662,
    "url": "http://patchwork.ozlabs.org/api/patches/842662/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/kvm-ppc/patch/20171129164116.16167-10-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,
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    "msgid": "<20171129164116.16167-10-christoffer.dall@linaro.org>",
    "list_archive_url": null,
    "date": "2017-11-29T16:41:09",
    "name": "[v2,09/16] KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_set_mpstate",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": false,
    "hash": "698e26d78d9210f275c869aba520e3c7e858bfdf",
    "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/20171129164116.16167-10-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/842662/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/842662/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<kvm-ppc-owner@vger.kernel.org>",
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        ],
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        "X-Received": "by 10.223.144.204 with SMTP id i70mr3185150wri.57.1511973694473; \n\tWed, 29 Nov 2017 08:41:34 -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 09/16] KVM: Move vcpu_load to arch-specific\n\tkvm_arch_vcpu_ioctl_set_mpstate",
        "Date": "Wed, 29 Nov 2017 17:41:09 +0100",
        "Message-Id": "<20171129164116.16167-10-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_set_mpstate().\n\nSigned-off-by: Christoffer Dall <christoffer.dall@linaro.org>\n---\n arch/s390/kvm/kvm-s390.c |  3 +++\n arch/x86/kvm/x86.c       | 15 ++++++++++++---\n virt/kvm/arm/arm.c       |  9 +++++++--\n virt/kvm/kvm_main.c      |  2 --\n 4 files changed, 22 insertions(+), 7 deletions(-)",
    "diff": "diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c\nindex 396fc3d..8fade85 100644\n--- a/arch/s390/kvm/kvm-s390.c\n+++ b/arch/s390/kvm/kvm-s390.c\n@@ -2853,6 +2853,8 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,\n {\n \tint rc = 0;\n \n+\tvcpu_load(vcpu);\n+\n \t/* user space knows about this interface - let it control the state */\n \tvcpu->kvm->arch.user_cpu_state_ctrl = 1;\n \n@@ -2870,6 +2872,7 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,\n \t\trc = -ENXIO;\n \t}\n \n+\tvcpu_put(vcpu);\n \treturn rc;\n }\n \ndiff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c\nindex 9bf62c3..ee357b6 100644\n--- a/arch/x86/kvm/x86.c\n+++ b/arch/x86/kvm/x86.c\n@@ -7456,15 +7456,20 @@ int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,\n int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,\n \t\t\t\t    struct kvm_mp_state *mp_state)\n {\n+\tint ret;\n+\n+\tvcpu_load(vcpu);\n+\n+\tret = -EINVAL;\n \tif (!lapic_in_kernel(vcpu) &&\n \t    mp_state->mp_state != KVM_MP_STATE_RUNNABLE)\n-\t\treturn -EINVAL;\n+\t\tgoto out;\n \n \t/* INITs are latched while in SMM */\n \tif ((is_smm(vcpu) || vcpu->arch.smi_pending) &&\n \t    (mp_state->mp_state == KVM_MP_STATE_SIPI_RECEIVED ||\n \t     mp_state->mp_state == KVM_MP_STATE_INIT_RECEIVED))\n-\t\treturn -EINVAL;\n+\t\tgoto out;\n \n \tif (mp_state->mp_state == KVM_MP_STATE_SIPI_RECEIVED) {\n \t\tvcpu->arch.mp_state = KVM_MP_STATE_INIT_RECEIVED;\n@@ -7472,7 +7477,11 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,\n \t} else\n \t\tvcpu->arch.mp_state = mp_state->mp_state;\n \tkvm_make_request(KVM_REQ_EVENT, vcpu);\n-\treturn 0;\n+\n+\tret = 0;\n+out:\n+\tvcpu_put(vcpu);\n+\treturn ret;\n }\n \n int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,\ndiff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c\nindex a717170..9a3acbc 100644\n--- a/virt/kvm/arm/arm.c\n+++ b/virt/kvm/arm/arm.c\n@@ -395,6 +395,10 @@ int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,\n int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,\n \t\t\t\t    struct kvm_mp_state *mp_state)\n {\n+\tint ret = 0;\n+\n+\tvcpu_load(vcpu);\n+\n \tswitch (mp_state->mp_state) {\n \tcase KVM_MP_STATE_RUNNABLE:\n \t\tvcpu->arch.power_off = false;\n@@ -403,10 +407,11 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,\n \t\tvcpu_power_off(vcpu);\n \t\tbreak;\n \tdefault:\n-\t\treturn -EINVAL;\n+\t\tret = -EINVAL;\n \t}\n \n-\treturn 0;\n+\tvcpu_put(vcpu);\n+\treturn ret;\n }\n \n /**\ndiff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c\nindex eac3c29..f360005 100644\n--- a/virt/kvm/kvm_main.c\n+++ b/virt/kvm/kvm_main.c\n@@ -2618,9 +2618,7 @@ static long kvm_vcpu_ioctl(struct file *filp,\n \t\tr = -EFAULT;\n \t\tif (copy_from_user(&mp_state, argp, sizeof(mp_state)))\n \t\t\tgoto out;\n-\t\tvcpu_load(vcpu);\n \t\tr = kvm_arch_vcpu_ioctl_set_mpstate(vcpu, &mp_state);\n-\t\tvcpu_put(vcpu);\n \t\tbreak;\n \t}\n \tcase KVM_TRANSLATE: {\n",
    "prefixes": [
        "v2",
        "09/16"
    ]
}