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| author | John Levon <john.levon@nutanix.com> | 2025-05-21 22:55:34 +0100 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2025-06-05 10:40:38 +0200 |
| commit | 44d0acf834b090c2717934983ac7678a602b2da5 (patch) | |
| tree | 750ff462653fb1fe95451944f8c113ab492e0f3e /include/hw/vfio | |
| parent | e3353d63e15d0b1109257d55e265a889e8c508f8 (diff) | |
| download | focaccia-qemu-44d0acf834b090c2717934983ac7678a602b2da5.tar.gz focaccia-qemu-44d0acf834b090c2717934983ac7678a602b2da5.zip | |
vfio/container: pass MemoryRegion to DMA operations
Pass through the MemoryRegion to DMA operation handlers of vfio containers. The vfio-user container will need this later, to translate the vaddr into an offset for the dma map vfio-user message; CPR will also will need this. Originally-by: John Johnson <john.g.johnson@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: John Levon <john.levon@nutanix.com> Reviewed-by: Cédric Le Goater <clg@redhat.com> Reviewed-by: Steve Sistare <steven.sistare@oracle.com> Link: https://lore.kernel.org/qemu-devel/20250521215534.2688540-1-john.levon@nutanix.com Signed-off-by: Cédric Le Goater <clg@redhat.com>
Diffstat (limited to 'include/hw/vfio')
| -rw-r--r-- | include/hw/vfio/vfio-container-base.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h index f9e561cb08..3feb773e5f 100644 --- a/include/hw/vfio/vfio-container-base.h +++ b/include/hw/vfio/vfio-container-base.h @@ -78,7 +78,7 @@ void vfio_address_space_insert(VFIOAddressSpace *space, int vfio_container_dma_map(VFIOContainerBase *bcontainer, hwaddr iova, ram_addr_t size, - void *vaddr, bool readonly); + void *vaddr, bool readonly, MemoryRegion *mr); int vfio_container_dma_unmap(VFIOContainerBase *bcontainer, hwaddr iova, ram_addr_t size, IOMMUTLBEntry *iotlb, bool unmap_all); @@ -151,20 +151,21 @@ struct VFIOIOMMUClass { /** * @dma_map * - * Map an address range into the container. + * Map an address range into the container. Note that the memory region is + * referenced within an RCU read lock region across this call. * * @bcontainer: #VFIOContainerBase to use * @iova: start address to map * @size: size of the range to map * @vaddr: process virtual address of mapping * @readonly: true if mapping should be readonly + * @mr: the memory region for this mapping * * Returns 0 to indicate success and -errno otherwise. */ int (*dma_map)(const VFIOContainerBase *bcontainer, hwaddr iova, ram_addr_t size, - void *vaddr, bool readonly); - + void *vaddr, bool readonly, MemoryRegion *mr); /** * @dma_unmap * |