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16950b60c1
Add __vfio_pci_dma_*() helpers which return -errno from the underlying ioctls. Add __vfio_pci_dma_unmap_all() to test more unmapping code paths. Add an out unmapped arg to report the unmapped byte size. The existing vfio_pci_dma_*() functions, which are intended for happy-path usage (assert on failure) are now thin wrappers on top of the double-underscore helpers. Reviewed-by: David Matlack <dmatlack@google.com> Signed-off-by: Alex Mastro <amastro@fb.com> Link: https://lore.kernel.org/r/20251028-fix-unmap-v6-4-2542b96bcc8e@fb.com Signed-off-by: Alex Williamson <alex@shazbot.org>