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Michael S. Tsirkin e6af578c53 virtio-pci: make reset operation safer ... virtio pci device reset actually just does an I/O write, which in PCI is really posted, that is it can complete on CPU before the device has received it. Further, interrupts might have been pending on another CPU, so device callback might get invoked after reset. This conflicts with how drivers use reset, which is typically: reset unregister a callback running after reset completed can race with unregister, potentially leading to use after free bugs. Fix by flushing out the write, and flushing pending interrupts. This assumes that device is never reset from its vq/config callbacks, or in parallel with being added/removed, document this assumption. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>		13 years ago
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Kconfig	virtio: add HAS_IOMEM dependency to MMIO platform bus driver	13 years ago
Makefile	virtio: Add platform bus driver for memory mapped virtio device	13 years ago
config.c	…
virtio.c	…
virtio_balloon.c	…
virtio_mmio.c	virtio-mmio: Correct the name of the guest features selector	13 years ago
virtio_pci.c	virtio-pci: make reset operation safer	13 years ago
virtio_ring.c	…