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f6eac904f6
Detach event channels during drained sections to stop I/O submission from the ring. xen-block is no longer reliant on aio_disable_external() after this patch. This will allow us to remove the aio_disable_external() API once all other code that relies on it is converted. Extend xen_device_set_event_channel_context() to allow ctx=NULL. The event channel still exists but the event loop does not monitor the file descriptor. Event channel processing can resume by calling xen_device_set_event_channel_context() with a non-NULL ctx. Factor out xen_device_set_event_channel_context() calls in hw/block/dataplane/xen-block.c into attach/detach helper functions. Incidentally, these don't require the AioContext lock because aio_set_fd_handler() is thread-safe. It's safer to register BlockDevOps after the dataplane instance has been created. The BlockDevOps .drained_begin/end() callbacks depend on the dataplane instance, so move the blk_set_dev_ops() call after xen_block_dataplane_create(). Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20230516190238.8401-12-stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> |
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| .. | ||
| Kconfig | ||
| meson.build | ||
| trace-events | ||
| trace.h | ||
| xen-backend.c | ||
| xen-bus-helper.c | ||
| xen-bus.c | ||
| xen-host-pci-device.c | ||
| xen-host-pci-device.h | ||
| xen-legacy-backend.c | ||
| xen-operations.c | ||
| xen_devconfig.c | ||
| xen_pt.c | ||
| xen_pt.h | ||
| xen_pt_config_init.c | ||
| xen_pt_graphics.c | ||
| xen_pt_load_rom.c | ||
| xen_pt_msi.c | ||
| xen_pt_stub.c | ||
| xen_pvdev.c | ||