linux.git/tools/virtio, branch v6.18.21

kmsan: convert kmsan_handle_dma to use physical addresses

2025-09-11T22:18:20+00:00

Convert the KMSAN DMA handling function from page-based to physical
address-based interface.

The refactoring renames kmsan_handle_dma() parameters from accepting
(struct page *page, size_t offset, size_t size) to (phys_addr_t phys,
size_t size). The existing semantics where callers are expected to
provide only kmap memory is continued here.

Reviewed-by: Jason Gunthorpe 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Marek Szyprowski 
Link: https://lore.kernel.org/r/3557cbaf66e935bc794f37d2b891ef75cbf2c80c.1757423202.git.leonro@nvidia.com

tools: virtio/linux/module.h add MODULE_DESCRIPTION() define.

2025-02-25T12:10:45+00:00

when we build tools/virtio, meet below error information.

cc -g -O2 -Werror -Wno-maybe-uninitialized -Wall
-I. -I../include/ -I ../../usr/include/
-Wno-pointer-sign -fno-strict-overflow
-fno-strict-aliasing -fno-common -MMD
-U_FORTIFY_SOURCE -include ../../include/linux/kconfig.h
-mfunction-return=thunk -fcf-protection=none
-mindirect-branch-register -pthread
-c -o virtio_ring.o ../../drivers/virtio/virtio_ring.c
../../drivers/virtio/virtio_ring.c:3276:20: error：expected declaration specifiers or ‘...’ before string constant
 3276 | MODULE_DESCRIPTION("Virtio ring implementation");
      |

to fix, add MODULE_DESCRIPTION() define for virtio test.

Fixes: ab0727f3ddb8 ("virtio: add missing MODULE_DESCRIPTION() macros")
Signed-off-by: Yufeng Wang 
Message-Id: <20250114064726.33079-1-wangyufeng@kylinos.cn>
Signed-off-by: Michael S. Tsirkin

tools: virtio/linux/compiler.h: Add data_race() define.

2025-02-25T12:10:45+00:00

Port over the definition of data_race() so we can build tools/virtio.

cc -g -O2 -Werror -Wno-maybe-uninitialized -Wall -I.
-I../include/ -I ../../usr/include/ -Wno-pointer-sign
-fno-strict-overflow -fno-strict-aliasing -fno-common
-MMD -U_FORTIFY_SOURCE -include ../../include/linux/kconfig.h
-mfunction-return=thunk -fcf-protection=none
-mindirect-branch-register -pthread
-c -o virtio_ring.o ../../drivers/virtio/virtio_ring.c
../../drivers/virtio/virtio_ring.c: in function'vring_interrupt':
../../drivers/virtio/virtio_ring.c:2711:17: error：Implicit declaration function'data_race' [-Wimplicit-function-declaration]
 2711 |                 data_race(vq->event_triggered = true);
      |                 ^~~~~~~~~

Signed-off-by: Yufeng Wang 
Message-Id: <20250114033635.20623-1-wangyufeng@kylinos.cn>
Signed-off-by: Michael S. Tsirkin

tools/virtio: Add DMA_MAPPING_ERROR and sg_dma_len api define for virtio test

2025-02-25T12:10:24+00:00

when we build tools/virtio, meet below error information.

cc -g -O2 -Werror -Wno-maybe-uninitialized -Wall -I. -I../include/
-I ../../usr/include/ -Wno-pointer-sign -fno-strict-overflow
-fno-strict-aliasing -fno-common -MMD
-U_FORTIFY_SOURCE -include ../../include/linux/kconfig.h
-mfunction-return=thunk
-fcf-protection=none -mindirect-branch-register -pthread
-c -o virtio_ring.o ../../drivers/virtio/virtio_ring.c

../../drivers/virtio/virtio_ring.c: in function 'vring_need_unmap_buffer':
../../drivers/virtio/virtio_ring.c:294:54: error:'DMA_MAPPING_ERROR'Undeclared (first use within this function)
  294 |         return vring->use_dma_api && (extra->addr != DMA_MAPPING_ERROR);
      |                                                      ^~~~~~~~~~~~~~~~~
../../drivers/virtio/virtio_ring.c:294:54: Note: Each undeclared identifier is only reported once within the function it appears in
../../drivers/virtio/virtio_ring.c: in function 'vring_map_one_sg':
../../drivers/virtio/virtio_ring.c:369:24: error：Implicit declaration function'sg_dma_len' [-Wimplicit-function-declaration]
  369 |                 *len = sg_dma_len(sg);
      |                        ^~~~~~~~~~
../../drivers/virtio/virtio_ring.c: in function'virtqueue_add_desc_split':
../../drivers/virtio/virtio_ring.c:518:37: error:'DMA_MAPPING_ERROR'Undeclared (first use within this function)
  518 |         extra[i].addr = premapped ? DMA_MAPPING_ERROR : addr;
      |                                     ^~~~~~~~~~~~~~~~~
../../drivers/virtio/virtio_ring.c: in function'virtqueue_add_indirect_packed':
../../drivers/virtio/virtio_ring.c:1370:61: error: 'DMA_MAPPING_ERROR'Undeclared (first use within this function)
 1370 |                             extra[i].addr = premapped ? DMA_MAPPING_ERROR : addr;
      |                                                         ^~~~~~~~~~~~~~~~~

../../drivers/virtio/virtio_ring.c: in function'virtqueue_add_packed':
../../drivers/virtio/virtio_ring.c:1535:41: error:'DMA_MAPPING_ERROR'Undeclared (first use within this function)
 1535 |                                         DMA_MAPPING_ERROR : addr;
      |                                         ^~~~~~~~~~~~~~~~~

to fix, add DMA_MAPPING_ERROR define for virtio test.

Fixes: c7e1b422afac ("virtio_ring: perform premapped operations based on per-buffer")
Signed-off-by: Yufeng Wang 
Message-Id: <20250113100300.174382-1-wangyufeng@kylinos.cn>
Signed-off-by: Michael S. Tsirkin

Fix typo in vringh_test.c

2024-11-06T09:40:07+00:00

Corrected minor typo in tools/virtio/vringh_test.c:
- Fixed "retreives" to "retrieves"

Signed-off-by: Shivam Chaudhary 
Message-Id: <20241008145204.478749-1-cvam0000@gmail.com>
Signed-off-by: Michael S. Tsirkin

tools/virtio:Fix the wrong format specifier

2024-09-10T06:51:48+00:00

The unsigned int should use "%u" instead of "%d".

Signed-off-by: Zhu Jun 
Message-Id: <20240724074108.9530-1-zhujun2@cmss.chinamobile.com>
Signed-off-by: Michael S. Tsirkin 
Reviewed-by: Eugenio Pérez 
Reviewed-by: Xuan Zhuo

tools/virtio: creating pipe assertion in vringh_test

2024-07-04T15:00:31+00:00

parallel_test() function in vringh_test needs to verify
the creation of the guest/host pipe.

Signed-off-by: Yunseong Kim 
Message-Id: <20240624174905.27980-2-yskelg@gmail.com>
Signed-off-by: Michael S. Tsirkin

tools: virtio: introduce vhost_net_test

2024-03-05T10:38:14+00:00

introduce vhost_net_test for both vhost_net tx and rx basing
on virtio_test to test vhost_net changing in the kernel.

Steps for vhost_net tx testing:
1. Prepare a out buf.
2. Kick the vhost_net to do tx processing.
3. Do the receiving in the tun side.
4. verify the data received by tun is correct.

Steps for vhost_net rx testing:
1. Prepare a in buf.
2. Do the sending in the tun side.
3. Kick the vhost_net to do rx processing.
4. verify the data received by vhost_net is correct.

Signed-off-by: Yunsheng Lin 
Acked-by: Michael S. Tsirkin 
Signed-off-by: Paolo Abeni

tools/virtio: Add dma sync api for virtio test

2023-10-16T09:32:23+00:00

Fixes: 8bd2f71054bd ("virtio_ring: introduce dma sync api for virtqueue")
also add dma sync api for virtio test.

Signed-off-by: Liming Wu 
Message-Id: <20231008031734.1095-1-liming.wu@jaguarmicro.com>
Signed-off-by: Michael S. Tsirkin

tools/virtio: fix build break for aarch64

2023-06-27T14:47:08+00:00

"-mfunction-return=thunk -mindirect-branch-register" are only valid
for x86. So introduce compiler operation check to avoid such issues

Fixes: 0d0ed4006127 ("tools/virtio: enable to build with retpoline")
Signed-off-by: Peng Fan 
Message-Id: <20230323040024.3809108-1-peng.fan@oss.nxp.com>
Signed-off-by: Michael S. Tsirkin