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| author | Li Chen <me@linux.beauty> | 2026-06-30 17:23:35 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2026-08-03 23:08:18 -0400 |
| commit | 926e727970a9e95d31cb5ad83d55de5754d2be84 (patch) | |
| tree | 29e4186a8f0aa779bd7ea9dcd3a4ae024cc449c3 /scripts/Makefile.thinlto | |
| parent | 47c6063b6e3225d2165e4bcfffeac49ba68a3fb6 (diff) | |
| download | linux-next-926e727970a9e95d31cb5ad83d55de5754d2be84.tar.gz linux-next-926e727970a9e95d31cb5ad83d55de5754d2be84.zip | |
nvdimm: virtio_pmem: isolate DMA request buffers
The virtio-pmem request object stores wait queues, flags, and list
pointers next to buffers mapped for virtqueue DMA. The response buffer is
mapped DMA_FROM_DEVICE, so non-coherent DMA invalidation must not share a
cache line with CPU-owned fields.
Keep the request buffer outside the DMA-from-device group and wrap only
the response buffer with __dma_from_device_group_begin/end.
Signed-off-by: Li Chen <me@linux.beauty>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260630092338.2094628-11-me@linux.beauty>
Diffstat (limited to 'scripts/Makefile.thinlto')
0 files changed, 0 insertions, 0 deletions