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qga: Introduce NVMe disk bus type

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Assigning a NVMe disk by VFIO or emulating a NVMe controller by QEMU,
a NVMe disk get exposed in guest side. Support NVMe disk bus type and
implement posix version.

Test PCI passthrough case:
~#virsh qemu-agent-command buster '{"execute":"guest-get-disks"}' | jq
  ...
    {
      "name": "/dev/nvme0n1",
      "dependencies": [],
      "partition": false,
      "address": {
        "serial": "SAMSUNG MZQL23T8HCLS-00A07_S64HNE0N500076",
        "bus-type": "nvme",
        "bus": 0,
        "unit": 0,
        "pci-controller": {
          "bus": 0,
          "slot": 22,
          "domain": 0,
          "function": 0
        },
        "dev": "/dev/nvme0n1",
        "target": 0
      }
  ...

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20220420022610.418052-2-pizhenwei@bytedance.com>
This commit is contained in:
zhenwei pi 2022-04-20 10:26:09 +08:00 • committed by Marc-André Lureau
parent c8ec041d00
commit d48f61c8ea
2 changed files with 6 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

5
qga/commands-posix.c
View file

@ -890,7 +890,8 @@ static bool build_guest_fsinfo_for_pci_dev(char const *syspath,
if (driver && (g_str_equal(driver, "ata_piix") ||
g_str_equal(driver, "sym53c8xx") ||
g_str_equal(driver, "virtio-pci") ||
g_str_equal(driver, "ahci"))) {
g_str_equal(driver, "ahci") ||
g_str_equal(driver, "nvme"))) {
break;
}
@ -985,6 +986,8 @@ static bool build_guest_fsinfo_for_pci_dev(char const *syspath,
g_debug("no host for '%s' (driver '%s')", syspath, driver);
goto cleanup;
}
} else if (strcmp(driver, "nvme") == 0) {
disk->bus_type = GUEST_DISK_BUS_TYPE_NVME;
} else {
g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath);
goto cleanup;

3
qga/qapi-schema.json
View file

@ -827,13 +827,14 @@
# @mmc: Win multimedia card (MMC) bus type
# @virtual: Win virtual bus type
# @file-backed-virtual: Win file-backed bus type
# @nvme: NVMe disks (since 7.1)
#
# Since: 2.2; 'Unknown' and all entries below since 2.4
##
{ 'enum': 'GuestDiskBusType',
'data': [ 'ide', 'fdc', 'scsi', 'virtio', 'xen', 'usb', 'uml', 'sata',
'sd', 'unknown', 'ieee1394', 'ssa', 'fibre', 'raid', 'iscsi',
'sas', 'mmc', 'virtual', 'file-backed-virtual' ] }
'sas', 'mmc', 'virtual', 'file-backed-virtual', 'nvme' ] }
##