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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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Yichong ChenandAndrew Morton
74a21a2db6
Patch series "tools: Fix tools/virtio test build", v2. This series fixes build failures hit by: make -C tools/virtio test Patch 1 adds tools/virtio compatibility definitions needed by current virtio headers when building the tools/virtio tests. Patch 2 makes tools/include/linux/overflow.h include stdint.h for SIZE_MAX, which is used by its size helper functions. With the series applied, make -C tools/virtio test builds virtio_test, vringh_test and vhost_net_test successfully. Tested on x86_64 and arm64 with: make -C tools/virtio clean make -C tools/virtio test This patch (of 2): vhost_net_test builds virtio_ring.c in userspace. Recent virtio headers pull in helper headers that are not provided by the tools/virtio compatibility layer, including asm/percpu_types.h, linux/completion.h, linux/mod_devicetable.h and linux/virtio_features.h. Add the missing compat definitions and the DMA attribute used by the current virtio ring code. Link: https://lore.kernel.org/20260629022124.131894-1-chenyichong@uniontech.com Link: https://lore.kernel.org/20260629022124.131894-2-chenyichong@uniontech.com Signed-off-by: Yichong Chen <chenyichong@uniontech.com> Acked-by: Eugenio Pérez <eperezma@redhat.com> Cc: chenyichong <chenyichong@uniontech.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Paolo Abeni <pabeni@redhat.com> Cc: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_DMA_MAPPING_H
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#define _LINUX_DMA_MAPPING_H
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#ifdef CONFIG_HAS_DMA
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# error Virtio userspace code does not support CONFIG_HAS_DMA
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#endif
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enum dma_data_direction {
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DMA_BIDIRECTIONAL = 0,
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DMA_TO_DEVICE = 1,
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DMA_FROM_DEVICE = 2,
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DMA_NONE = 3,
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};
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#define dma_alloc_coherent(d, s, hp, f) ({ \
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void *__dma_alloc_coherent_p = kmalloc((s), (f)); \
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*(hp) = (unsigned long)__dma_alloc_coherent_p; \
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__dma_alloc_coherent_p; \
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})
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#define dma_free_coherent(d, s, p, h) kfree(p)
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#define dma_map_page(d, p, o, s, dir) (page_to_phys(p) + (o))
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#define dma_map_page_attrs(d, p, o, s, dir, a) (page_to_phys(p) + (o))
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#define dma_map_single(d, p, s, dir) (virt_to_phys(p))
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#define dma_map_single_attrs(d, p, s, dir, a) (virt_to_phys(p))
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#define dma_mapping_error(...) (0)
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#define dma_unmap_single(d, a, s, r) do { (void)(d); (void)(a); (void)(s); (void)(r); } while (0)
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#define dma_unmap_page(d, a, s, r) do { (void)(d); (void)(a); (void)(s); (void)(r); } while (0)
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#define dma_unmap_page_attrs(d, a, s, r, t) do { \
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(void)(d); (void)(a); (void)(s); (void)(r); (void)(t); \
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} while (0)
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#define sg_dma_address(sg) (0)
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#define sg_dma_len(sg) (0)
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#define dma_need_sync(v, a) (0)
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#define dma_unmap_single_attrs(d, a, s, r, t) do { \
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(void)(d); (void)(a); (void)(s); (void)(r); (void)(t); \
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} while (0)
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#define dma_sync_single_range_for_cpu(d, a, o, s, r) do { \
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(void)(d); (void)(a); (void)(o); (void)(s); (void)(r); \
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} while (0)
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#define dma_sync_single_range_for_device(d, a, o, s, r) do { \
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(void)(d); (void)(a); (void)(o); (void)(s); (void)(r); \
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} while (0)
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#define dma_max_mapping_size(...) SIZE_MAX
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/*
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* A dma_addr_t can hold any valid DMA or bus address for the platform. It can
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* be given to a device to use as a DMA source or target. It is specific to a
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* given device and there may be a translation between the CPU physical address
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* space and the bus address space.
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*
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* DMA_MAPPING_ERROR is the magic error code if a mapping failed. It should not
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* be used directly in drivers, but checked for using dma_mapping_error()
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* instead.
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*/
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#define DMA_MAPPING_ERROR (~(dma_addr_t)0)
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#define DMA_ATTR_CPU_CACHE_CLEAN (1UL << 11)
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#define DMA_ATTR_DEBUGGING_IGNORE_CACHELINES 0
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#endif
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