netdev - Re: [PATCH v2 1/2] tools/virtio: Add dma sync api for virtio test

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Date: Sun, 8 Oct 2023 10:19:17 +0800
From: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To: liming.wu@...uarmicro.com
Cc: kvm@...r.kernel.org,
 virtualization@...ts.linux-foundation.org,
 netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org,
 Liming Wu <liming.wu@...uarmicro.com>,
 "Michael S . Tsirkin" <mst@...hat.com>,
 Jason Wang <jasowang@...hat.com>
Subject: Re: [PATCH v2 1/2] tools/virtio: Add dma sync api for virtio test

On Sat,  7 Oct 2023 14:55:46 +0800, liming.wu@...uarmicro.com wrote:
> From: Liming Wu <liming.wu@...uarmicro.com>
>
> Fixes: 8bd2f71054bd ("virtio_ring: introduce dma sync api for virtqueue")
> also add dma sync api for virtio test.
>
> Signed-off-by: Liming Wu <liming.wu@...uarmicro.com>

You should post a new thread.

Thanks.


> ---
>  tools/virtio/linux/dma-mapping.h | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
>
> diff --git a/tools/virtio/linux/dma-mapping.h b/tools/virtio/linux/dma-mapping.h
> index 834a90bd3270..822ecaa8e4df 100644
> --- a/tools/virtio/linux/dma-mapping.h
> +++ b/tools/virtio/linux/dma-mapping.h
> @@ -24,11 +24,23 @@ enum dma_data_direction {
>  #define dma_map_page(d, p, o, s, dir) (page_to_phys(p) + (o))
>
>  #define dma_map_single(d, p, s, dir) (virt_to_phys(p))
> +#define dma_map_single_attrs(d, p, s, dir, a) (virt_to_phys(p))
>  #define dma_mapping_error(...) (0)
>
>  #define dma_unmap_single(d, a, s, r) do { (void)(d); (void)(a); (void)(s); (void)(r); } while (0)
>  #define dma_unmap_page(d, a, s, r) do { (void)(d); (void)(a); (void)(s); (void)(r); } while (0)
>
> +#define sg_dma_address(sg) (0)
> +#define dma_need_sync(v, a) (0)
> +#define dma_unmap_single_attrs(d, a, s, r, t) do { \
> +	(void)(d); (void)(a); (void)(s); (void)(r); (void)(t); \
> +} while (0)
> +#define dma_sync_single_range_for_cpu(d, a, o, s, r) do { \
> +	(void)(d); (void)(a); (void)(o); (void)(s); (void)(r); \
> +} while (0)
> +#define dma_sync_single_range_for_device(d, a, o, s, r) do { \
> +	(void)(d); (void)(a); (void)(o); (void)(s); (void)(r); \
> +} while (0)
>  #define dma_max_mapping_size(...) SIZE_MAX
>
>  #endif
> --
> 2.34.1
>