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hw/qdev: introduce qdev_is_realized() helper

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Add a helper function to check whether the device is realized without
requiring the Big QEMU Lock. The next patch adds a second caller. The
goal is to avoid spreading DeviceState field accesses throughout the
code.

Suggested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230516190238.8401-3-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2023-05-16 15:02:20 -04:00 • committed by Kevin Wolf
parent 2d19629581
commit 26462a700c
2 changed files with 15 additions and 5 deletions
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3
hw/scsi/scsi-bus.c
View file

@ -60,8 +60,7 @@ static SCSIDevice *do_scsi_device_find(SCSIBus *bus,
* the user access the device.
*/
if (retval && !include_unrealized &&
!qatomic_load_acquire(&retval->qdev.realized)) {
if (retval && !include_unrealized && !qdev_is_realized(&retval->qdev)) {
retval = NULL;
}