Re: [PATCH 0/2] virtio-blk: improve handling of DMA mapping failures
From: Stefan Hajnoczi <stefanha@redhat.com>
Date: 2020-02-19 17:58:08
Also in:
linux-block, linux-s390, lkml
On Thu, Feb 13, 2020 at 01:37:26PM +0100, Halil Pasic wrote:
Two patches are handling new edge cases introduced by doing DMA mappings (which can fail) in virtio core. I stumbled upon this while stress testing I/O for Protected Virtual Machines. I deliberately chose a tiny swiotlb size and have generated load with fio. With more than one virtio-blk disk in use I experienced hangs. The goal of this series is to fix those hangs. Halil Pasic (2): virtio-blk: fix hw_queue stopped on arbitrary error virtio-blk: improve virtqueue error to BLK_STS drivers/block/virtio_blk.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) base-commit: 39bed42de2e7d74686a2d5a45638d6a5d7e7d473 -- 2.17.1
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
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