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{
    "id": 2195673,
    "url": "http://patchwork.ozlabs.org/api/covers/2195673/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20260211155410.203883-1-magnuskulke@linux.microsoft.com/",
    "project": {
        "id": 14,
        "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api",
        "name": "QEMU Development",
        "link_name": "qemu-devel",
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    "msgid": "<20260211155410.203883-1-magnuskulke@linux.microsoft.com>",
    "list_archive_url": null,
    "date": "2026-02-11T15:54:00",
    "name": "[00/10] Support QEMU cpu models in MSHV accelerator",
    "submitter": {
        "id": 90753,
        "url": "http://patchwork.ozlabs.org/api/people/90753/?format=api",
        "name": "Magnus Kulke",
        "email": "magnuskulke@linux.microsoft.com"
    },
    "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20260211155410.203883-1-magnuskulke@linux.microsoft.com/mbox/",
    "series": [
        {
            "id": 491871,
            "url": "http://patchwork.ozlabs.org/api/series/491871/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=491871",
            "date": "2026-02-11T15:54:00",
            "name": "Support QEMU cpu models in MSHV accelerator",
            "version": 1,
            "mbox": "http://patchwork.ozlabs.org/series/491871/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/covers/2195673/comments/",
    "headers": {
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        "From": "Magnus Kulke <magnuskulke@linux.microsoft.com>",
        "To": "qemu-devel@nongnu.org",
        "Cc": "Magnus Kulke <magnuskulke@linux.microsoft.com>,\n Wei Liu <liuwe@microsoft.com>, Wei Liu <wei.liu@kernel.org>,\n Zhao Liu <zhao1.liu@intel.com>, Paolo Bonzini <pbonzini@redhat.com>,\n Magnus Kulke <magnuskulke@microsoft.com>",
        "Subject": "[PATCH 00/10] Support QEMU cpu models in MSHV accelerator",
        "Date": "Wed, 11 Feb 2026 16:54:00 +0100",
        "Message-Id": "<20260211155410.203883-1-magnuskulke@linux.microsoft.com>",
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    },
    "content": "Hey all,\n\nIn the current MSHV accelerator code passing CPU features via the -cpu\nflag doesn't work as intended yet. When using the MSHV hypervisor we\neither silently discard the specified model/features and leave it up\nto the hypervisor to provide a sensible set of features or if the user\nselects -cpu host, the hypervisor might refuse to create a partition.\n\nThis changeset introduces a more comprehensive support for passing\ndesired guest cpu features to the hypervisor. It's also a prerequisite\nfor Live Migration support, in which we have to roundtrip CPU State\nexplicitly\n\nKnown issues:\n\nWe will probably have to iterate a bit more on this, since recently\nsupport for CET_U/CET_S xstate bits has been introduced in QEMU, which\ndoesn't harmonize with our current approach of configuring the\nhypervisor with static responses to cpuid queries.\n\nDrive-by fixes:\n\n- tiny fix in MAINTAINERS\n- adding packed attribute to inlined UAPI structs\n\nbest,\n\nmagnus\n\nMagnus Kulke (10):\n  MAINTAINERS: fix magnuskulke email-address\n  include/hw/hyperv: add QEMU_PACKED to uapi structs\n  accel/mshv: use mshv_create_partition_v2 payload\n  target/i386/mshv: fix cpuid propagation bug\n  target/i386/mshv: fix various cpuid traversal bugs\n  target/i386/mshv: change cpuid mask to UINT32_MAX\n  target/i386/mshv: set cpu model name on -cpu host\n  target/i386: query mshv accel for supported cpuids\n  target/i386/mshv: populate xsave area offsets\n  target/i386/mshv: filter out CET bits in cpuid\n\n MAINTAINERS                    |   4 +-\n accel/mshv/mshv-all.c          |  35 ++++--\n include/hw/hyperv/hvgdk_mini.h |  39 ++++--\n include/hw/hyperv/hvhdk.h      | 199 ++++++++++++++++++++++++++++-\n include/system/mshv.h          |   3 +\n target/i386/cpu.c              |   8 ++\n target/i386/mshv/mshv-cpu.c    | 221 ++++++++++++++++++++++++++-------\n 7 files changed, 438 insertions(+), 71 deletions(-)"
}