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vfio: add unmap_all flag to DMA unmap callback

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We'll use this parameter shortly; this just adds the plumbing.

Signed-off-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250507152020.1254632-9-john.levon@nutanix.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
John Levon 2025-05-07 16:20:13 +01:00 • committed by Cédric Le Goater
parent cae04b5634
commit 5a22b50591
5 changed files with 30 additions and 11 deletions
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15
include/hw/vfio/vfio-container-base.h
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@ -81,7 +81,7 @@ int vfio_container_dma_map(VFIOContainerBase *bcontainer,
void *vaddr, bool readonly);
int vfio_container_dma_unmap(VFIOContainerBase *bcontainer,
hwaddr iova, ram_addr_t size,
IOMMUTLBEntry *iotlb);
IOMMUTLBEntry *iotlb, bool unmap_all);
bool vfio_container_add_section_window(VFIOContainerBase *bcontainer,
MemoryRegionSection *section,
Error **errp);
@ -120,9 +120,20 @@ struct VFIOIOMMUClass {
int (*dma_map)(const VFIOContainerBase *bcontainer,
hwaddr iova, ram_addr_t size,
void *vaddr, bool readonly);
/**
* @dma_unmap
*
* Unmap an address range from the container.
*
* @bcontainer: #VFIOContainerBase to use for unmap
* @iova: start address to unmap
* @size: size of the range to unmap
* @iotlb: The IOMMU TLB mapping entry (or NULL)
* @unmap_all: if set, unmap the entire address space
*/
int (*dma_unmap)(const VFIOContainerBase *bcontainer,
hwaddr iova, ram_addr_t size,
IOMMUTLBEntry *iotlb);
IOMMUTLBEntry *iotlb, bool unmap_all);
bool (*attach_device)(const char *name, VFIODevice *vbasedev,
AddressSpace *as, Error **errp);
void (*detach_device)(VFIODevice *vbasedev);