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| author | David Hildenbrand | 2021-04-13 11:55:24 +0200 |
|---|---|---|
| committer | Eduardo Habkost | 2021-07-08 21:54:45 +0200 |
| commit | 5e3b981c330c58c4e97ab85e40c3bd2ee54b2fa7 (patch) | |
| tree | 884e5fc355a8b79b3a0f815c408b68b191496718 /include/hw | |
| parent | virtio-mem: Implement RamDiscardManager interface (diff) | |
| download | qemu-5e3b981c330c58c4e97ab85e40c3bd2ee54b2fa7.tar.gz qemu-5e3b981c330c58c4e97ab85e40c3bd2ee54b2fa7.tar.xz qemu-5e3b981c330c58c4e97ab85e40c3bd2ee54b2fa7.zip | |
vfio: Support for RamDiscardManager in the !vIOMMU case
Implement support for RamDiscardManager, to prepare for virtio-mem
support. Instead of mapping the whole memory section, we only map
"populated" parts and update the mapping when notified about
discarding/population of memory via the RamDiscardListener. Similarly, when
syncing the dirty bitmaps, sync only the actually mapped (populated) parts
by replaying via the notifier.
Using virtio-mem with vfio is still blocked via
ram_block_discard_disable()/ram_block_discard_require() after this patch.
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Auger Eric <eric.auger@redhat.com>
Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
Cc: teawater <teawaterz@linux.alibaba.com>
Cc: Marek Kedzierski <mkedzier@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210413095531.25603-7-david@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/vfio/vfio-common.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 6141162d7a..681432213d 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -91,6 +91,7 @@ typedef struct VFIOContainer { QLIST_HEAD(, VFIOGuestIOMMU) giommu_list; QLIST_HEAD(, VFIOHostDMAWindow) hostwin_list; QLIST_HEAD(, VFIOGroup) group_list; + QLIST_HEAD(, VFIORamDiscardListener) vrdl_list; QLIST_ENTRY(VFIOContainer) next; } VFIOContainer; @@ -102,6 +103,16 @@ typedef struct VFIOGuestIOMMU { QLIST_ENTRY(VFIOGuestIOMMU) giommu_next; } VFIOGuestIOMMU; +typedef struct VFIORamDiscardListener { + VFIOContainer *container; + MemoryRegion *mr; + hwaddr offset_within_address_space; + hwaddr size; + uint64_t granularity; + RamDiscardListener listener; + QLIST_ENTRY(VFIORamDiscardListener) next; +} VFIORamDiscardListener; + typedef struct VFIOHostDMAWindow { hwaddr min_iova; hwaddr max_iova; |