peter/qemu - QEMU hacking for Peter

Age	Commit message (Collapse)	Author	Files	Lines
2014-01-22	dataplane: fix shadowed return value	Stefan Hajnoczi	1	-1/+1
	Propagate the error return value from get_indirect(). This bug was introduced in commit 4d684832 ("vring: create a common function to parse descriptors"). Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-12-20	dataplane: replace hostmem with memory_region_find	Paolo Bonzini	3	-192/+71
	Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-12-20	dataplane: change vring API to use VirtQueueElement	Paolo Bonzini	1	-20/+36
	Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-12-20	vring: factor common code for error exits	Paolo Bonzini	1	-13/+21
	Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-12-20	vring: create a common function to parse descriptors	Paolo Bonzini	1	-62/+51
	Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-08-12	virtio: clear signalled_used_valid when switching from dataplane	Stefan Hajnoczi	1	-0/+1
	When the dataplane thread stops, its vring.c implementation synchronizes vring state back to virtio.c so we can continue emulating the virtio device. This patch ensures that virtio.c's signalled_used_valid flag is reset so that we do not suppress guest notifications due to stale signalled_used values. Suggested-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-07-19	dataplane: sync virtio.c and vring.c virtqueue state	Stefan Hajnoczi	1	-3/+5
	Load the virtio.c state into vring.c when we start dataplane mode and vice versa when stopping dataplane mode. This patch makes it possible to start and stop dataplane any time while the guest is running. This will eventually allow us to go back to QEMU main loop for bdrv_drain_all() and live migration. In the meantime, this patch makes the dataplane lifecycle more robust but should make no visible difference. It may be useful in the virtio-net dataplane effort. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-07-04	memory: add ref/unref calls	Paolo Bonzini	1	-0/+7
	Add ref/unref calls at the following places: - places where memory regions are stashed by a listener and used outside the BQL (including in Xen or KVM). - memory_region_find callsites - creation of aliases and containers (only the aliased/contained region gets a reference to avoid loops) - around calls to del_subregion/add_subregion, where the region could disappear after the first call Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-06-20	memory: make section size a 128-bit integer	Paolo Bonzini	1	-1/+1
	So far, the size of all regions passed to listeners could fit in 64 bits, because artificial regions (containers and aliases) are eliminated by the memory core, leaving only device regions which have reasonable sizes An IOMMU however cannot be eliminated by the memory core, and may have an artificial size, hence we may need 65 bits to represent its size. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08	hw: move virtio devices to hw/ subdirectories	Paolo Bonzini	3	-0/+540
	Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>