riscv/qemu: QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org - qemu

QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org

emulation kvm qemu virtualization

History

Eduardo Habkost f6e501a28e virtio: Provide version-specific variants of virtio PCI devices Many of the current virtio--pci device types actually represent 3 different types of devices: virtio 1.0 non-transitional devices * virtio 1.0 transitional devices * virtio 0.9 ("legacy device" in virtio 1.0 terminology) That would be just an annoyance if it didn't break our device/bus compatibility QMP interfaces. With these multi-purpose device types, there's no way to tell management software that transitional devices and legacy devices require a Conventional PCI bus. The multi-purpose device types would also prevent us from telling management software what's the PCI vendor/device ID for them, because their PCI IDs change at runtime depending on the bus where they were plugged. This patch adds separate device types for each of those virtio device flavors: - virtio--pci: the existing multi-purpose device types - Configurable using `disable-legacy` and `disable-modern` properties - Legacy driver support is automatically enabled/disabled depending on the bus where it is plugged - Supports Conventional PCI and PCI Express buses (but Conventional PCI is incompatible with disable-legacy=off) - Changes PCI vendor/device IDs at runtime - virtio--pci-transitional: virtio-1.0 device supporting legacy drivers - Supports Conventional PCI buses only, because it has a PIO BAR - virtio--pci-non-transitional: modern-only - Supports both Conventional PCI and PCI Express buses The existing TYPE_ macros for these types will point to an abstract base type, so existing casts in the code will keep working for all variants. A simple test script (tests/acceptance/virtio_version.py) is included, to check if the new device types are equivalent to using the `disable-legacy` and `disable-modern` options. Acked-by: Andrea Bolognani <abologna@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>		8 years ago
..
Makefile.objs	hw: make virtio devices configurable via default-configs/	8 years ago
trace-events	vhost: add trace for IOTLB miss	8 years ago
vhost-backend.c	vhost: fix a memory leak	9 years ago
vhost-stub.c	vhost-user: introduce shared vhost-user state	8 years ago
vhost-user.c	vhost-user: Don't ask for reply on postcopy mem table set	8 years ago
vhost-vsock.c	hw: use "qemu/osdep.h" as first #include in source files	9 years ago
vhost.c	vhost: fix invalid downcast	8 years ago
virtio-balloon.c	qapi: Drop qapi_event_send_FOO()'s Error ** argument	8 years ago
virtio-bus.c	virtio: remove event notifier cleanup call on de-assign	9 years ago
virtio-crypto-pci.c	virtio: Helper for registering virtio device types	8 years ago
virtio-crypto.c	cryptodev: add vhost support	9 years ago
virtio-mmio.c	virtio-mmio: switch to linux headers	10 years ago
virtio-pci.c	virtio: Provide version-specific variants of virtio PCI devices	8 years ago
virtio-pci.h	virtio: Provide version-specific variants of virtio PCI devices	8 years ago
virtio-rng.c	qom: make user_creatable_complete() specific to UserCreatable	8 years ago
virtio.c	virtio: pass argument by value for virtqueue_map_iovec()	8 years ago