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Date:   Wed, 19 Feb 2020 15:11:34 +0000
From:   Stefan Hajnoczi <stefanha@redhat.com>
To:     Halil Pasic <pasic@linux.ibm.com>
Cc:     "Michael S. Tsirkin" <mst@redhat.com>,
        Jason Wang <jasowang@redhat.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Jens Axboe <axboe@kernel.dk>,
        virtualization@lists.linux-foundation.org,
        linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-s390@vger.kernel.org,
        Christian Borntraeger <borntraeger@de.ibm.com>,
        Viktor Mihajlovski <mihajlov@linux.ibm.com>,
        Cornelia Huck <cohuck@redhat.com>,
        Ram Pai <linuxram@us.ibm.com>,
        Thiago Jung Bauermann <bauerman@linux.ibm.com>,
        "Lendacky, Thomas" <Thomas.Lendacky@amd.com>
Subject: Re: [PATCH 0/2] virtio-blk: improve handling of DMA mapping failures
Message-ID: <20200219151134.GI1078625@stefanha-x1.localdomain>
References: <20200213123728.61216-1-pasic@linux.ibm.com>
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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.
>=20
> 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.
>=20
> The goal of this series is to fix those hangs.
>=20
> Halil Pasic (2):
>   virtio-blk: fix hw_queue stopped on arbitrary error
>   virtio-blk: improve virtqueue error to BLK_STS
>=20
>  drivers/block/virtio_blk.c | 17 ++++++++++++-----
>  1 file changed, 12 insertions(+), 5 deletions(-)
>=20
>=20
> base-commit: 39bed42de2e7d74686a2d5a45638d6a5d7e7d473
> --=20
> 2.17.1
>=20

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

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