diff options
| author | Leon Romanovsky <leonro@nvidia.com> | 2025-11-20 11:28:21 +0200 |
|---|---|---|
| committer | Alex Williamson <alex@shazbot.org> | 2025-11-20 12:01:41 -0700 |
| commit | d4504262f745e48c1739c8b864f779b4b0f9de80 (patch) | |
| tree | 4d45f9dbd52249aa33106160d684742632bf9bb5 /include/linux | |
| parent | f58ef9d1d1355b15443719df95081f193067ab88 (diff) | |
PCI/P2PDMA: Simplify bus address mapping API
Update the pci_p2pdma_bus_addr_map() function to take a direct pointer
to the p2pdma_provider structure instead of the pci_p2pdma_map_state.
This simplifies the API by removing the need for callers to extract
the provider from the state structure.
The change updates all callers across the kernel (block layer, IOMMU,
DMA direct, and HMM) to pass the provider pointer directly, making
the code more explicit and reducing unnecessary indirection. This
also removes the runtime warning check since callers now have direct
control over which provider they use.
Tested-by: Alex Mastro <amastro@fb.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Ankit Agrawal <ankita@nvidia.com>
Link: https://lore.kernel.org/r/20251120-dmabuf-vfio-v9-2-d7f71607f371@nvidia.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/pci-p2pdma.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/include/linux/pci-p2pdma.h b/include/linux/pci-p2pdma.h index 1400f3ad4299..9516ef97b17a 100644 --- a/include/linux/pci-p2pdma.h +++ b/include/linux/pci-p2pdma.h @@ -181,16 +181,15 @@ pci_p2pdma_state(struct pci_p2pdma_map_state *state, struct device *dev, /** * pci_p2pdma_bus_addr_map - Translate a physical address to a bus address * for a PCI_P2PDMA_MAP_BUS_ADDR transfer. - * @state: P2P state structure + * @provider: P2P provider structure * @paddr: physical address to map * * Map a physically contiguous PCI_P2PDMA_MAP_BUS_ADDR transfer. */ static inline dma_addr_t -pci_p2pdma_bus_addr_map(struct pci_p2pdma_map_state *state, phys_addr_t paddr) +pci_p2pdma_bus_addr_map(struct p2pdma_provider *provider, phys_addr_t paddr) { - WARN_ON_ONCE(state->map != PCI_P2PDMA_MAP_BUS_ADDR); - return paddr + state->mem->bus_offset; + return paddr + provider->bus_offset; } #endif /* _LINUX_PCI_P2P_H */ |