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hw/core: Allow setting 'virtio-blk-device.scsi' property on OSX host

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Commit ed65fd1a27 ("virtio-blk: switch off scsi-passthrough by
default") changed the default value of the 'scsi' property of
virtio-blk, which is only available on Linux hosts. It also added
an unconditional compat entry for 2.4 or earlier machines.

Trying to set this property on a pre-2.5 machine on OSX, we get:

   Unexpected error in object_property_find() at qom/object.c:1201:
   qemu-system-x86_64: -device virtio-blk-pci,id=scsi0,drive=drive0: can't apply global virtio-blk-device.scsi=true: Property '.scsi' not found

Fix this error by marking the property optional.

Fixes: ed65fd1a27 ("virtio-blk: switch off scsi-passthrough by default")
Suggested-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200207001404.1739-1-philmd@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2020-02-07 01:14:04 +01:00 committed by Stefan Hajnoczi
parent ac9d00bf7b
commit 11a18c84db
1 changed files with 2 additions and 1 deletions
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3
hw/core/machine.c
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@ -148,7 +148,8 @@ GlobalProperty hw_compat_2_5[] = {
const size_t hw_compat_2_5_len = G_N_ELEMENTS(hw_compat_2_5);
GlobalProperty hw_compat_2_4[] = {
{ "virtio-blk-device", "scsi", "true" },
/* Optional because the 'scsi' property is Linux-only */
{ "virtio-blk-device", "scsi", "true", .optional = true },
{ "e1000", "extra_mac_registers", "off" },
{ "virtio-pci", "x-disable-pcie", "on" },
{ "virtio-pci", "migrate-extra", "off" },