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| author | Peter Maydell <peter.maydell@linaro.org> | 2016-02-25 12:13:49 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-02-25 12:13:49 +0000 |
| commit | df215b59d907ceed60bca088f5a3d50982919d59 (patch) | |
| tree | c0cc9f5a1a2ff94a90add1e4f49571af370fae3a /hw/virtio/vhost-user.c | |
| parent | 8283f6f82137bec76c41c2a6bbc26689d2766672 (diff) | |
| parent | 533e8bbb55038e224fa418b8b8e8175110ecda4f (diff) | |
| download | focaccia-qemu-df215b59d907ceed60bca088f5a3d50982919d59.tar.gz focaccia-qemu-df215b59d907ceed60bca088f5a3d50982919d59.zip | |
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
vhost, virtio, pci, pc Fixes all over the place. virtio dataplane migration support. Old q35 machine types removed. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Thu 25 Feb 2016 11:16:46 GMT using RSA key ID D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" * remotes/mst/tags/for_upstream: (21 commits) q35: No need to check gigabyte_align q35: Remove unused q35-acpi-dsdt.aml file ich9: Remove enable_tco arguments from init functions machine: Remove no_tco field q35: Remove old machine versions tests/vhost-user-bridge: fix build on 32 bit systems vring: remove virtio-scsi: do not use vring in dataplane virtio-blk: do not use vring in dataplane virtio-blk: fix "disabled data plane" mode virtio: export vring_notify as virtio_should_notify virtio: add AioContext-specific function for host notifiers vring: make vring_enable_notification return void block-migration: acquire AioContext as necessary pci core: function pci_bus_init() cleanup pci core: function pci_host_bus_register() cleanup balloon: Use only 'pc-dimm' type dimm for ballooning virtio-balloon: rewrite get_current_ram_size() move get_current_ram_size to virtio-balloon.c vhost-user: don't merge regions with different fds ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/virtio/vhost-user.c')
| -rw-r--r-- | hw/virtio/vhost-user.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 7fde1370e0..7ed3dd9a13 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -611,6 +611,25 @@ static int vhost_user_migration_done(struct vhost_dev *dev, char* mac_addr) return -1; } +static bool vhost_user_can_merge(struct vhost_dev *dev, + uint64_t start1, uint64_t size1, + uint64_t start2, uint64_t size2) +{ + ram_addr_t ram_addr; + int mfd, rfd; + MemoryRegion *mr; + + mr = qemu_ram_addr_from_host((void *)(uintptr_t)start1, &ram_addr); + assert(mr); + mfd = qemu_get_ram_fd(ram_addr); + + mr = qemu_ram_addr_from_host((void *)(uintptr_t)start2, &ram_addr); + assert(mr); + rfd = qemu_get_ram_fd(ram_addr); + + return mfd == rfd; +} + const VhostOps user_ops = { .backend_type = VHOST_BACKEND_TYPE_USER, .vhost_backend_init = vhost_user_init, @@ -633,4 +652,5 @@ const VhostOps user_ops = { .vhost_set_vring_enable = vhost_user_set_vring_enable, .vhost_requires_shm_log = vhost_user_requires_shm_log, .vhost_migration_done = vhost_user_migration_done, + .vhost_backend_can_merge = vhost_user_can_merge, }; |