From: Cornelia Huck <cornelia.huck@de.ibm.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: famz@redhat.com, borntraeger@de.ibm.com, mst@redhat.com,
qemu-devel@nongnu.org, tubo@linux.vnet.ibm.com,
stefanha@redhat.com
Subject: Re: [Qemu-devel] [PATCH 6/9] virtio-blk: use aio handler for data plane
Date: Fri, 1 Apr 2016 16:05:15 +0200 [thread overview]
Message-ID: <20160401160515.62e47d60.cornelia.huck@de.ibm.com> (raw)
In-Reply-To: <1459516794-23629-7-git-send-email-pbonzini@redhat.com>
On Fri, 1 Apr 2016 15:19:51 +0200
Paolo Bonzini <pbonzini@redhat.com> wrote:
> From: "Michael S. Tsirkin" <mst@redhat.com>
>
> In addition to handling IO in vcpu thread and in io thread, dataplane
> introduces yet another mode: handling it by aio.
>
> This reuses the same handler as previous modes, which triggers races as
> these were not designed to be reentrant.
>
> Use a separate handler just for aio, and disable regular handlers when
> dataplane is active.
>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> hw/block/dataplane/virtio-blk.c | 13 +++++++++++++
> hw/block/virtio-blk.c | 27 +++++++++++++++++----------
> include/hw/virtio/virtio-blk.h | 2 ++
> 3 files changed, 32 insertions(+), 10 deletions(-)
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
next prev parent reply other threads:[~2016-04-01 14:05 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-01 13:19 [Qemu-devel] [PATCH v2 0/9] virtio: aio handler API Paolo Bonzini
2016-04-01 13:19 ` [Qemu-devel] [PATCH 1/9] virtio-dataplane: pass assign=true to virtio_queue_aio_set_host_notifier_handler Paolo Bonzini
2016-04-01 14:02 ` Cornelia Huck
2016-04-05 10:38 ` Michael S. Tsirkin
2016-04-05 10:42 ` Paolo Bonzini
2016-04-05 10:59 ` Paolo Bonzini
2016-04-01 13:19 ` [Qemu-devel] [PATCH 2/9] virtio: make virtio_queue_notify_vq static Paolo Bonzini
2016-04-01 13:19 ` [Qemu-devel] [PATCH 3/9] virtio-blk: fix disabled mode Paolo Bonzini
2016-04-01 13:19 ` [Qemu-devel] [PATCH 4/9] virtio-scsi: " Paolo Bonzini
2016-04-01 13:19 ` [Qemu-devel] [PATCH 5/9] virtio: add aio handler Paolo Bonzini
2016-04-01 14:04 ` Cornelia Huck
2016-04-01 13:19 ` [Qemu-devel] [PATCH 6/9] virtio-blk: use aio handler for data plane Paolo Bonzini
2016-04-01 14:05 ` Cornelia Huck [this message]
2016-04-01 13:19 ` [Qemu-devel] [PATCH 7/9] virtio-scsi: " Paolo Bonzini
2016-04-05 9:06 ` Fam Zheng
2016-04-01 13:19 ` [Qemu-devel] [PATCH 8/9] virtio: merge virtio_queue_aio_set_host_notifier_handler with virtio_queue_set_aio Paolo Bonzini
2016-04-03 9:06 ` Michael S. Tsirkin
2016-04-03 17:13 ` Paolo Bonzini
2016-04-01 13:19 ` [Qemu-devel] [PATCH 9/9] virtio: remove starting/stopping checks Paolo Bonzini
2016-04-01 14:14 ` Christian Borntraeger
2016-04-01 14:30 ` Cornelia Huck
2016-04-03 10:30 ` Michael S. Tsirkin
2016-04-01 14:02 ` [Qemu-devel] [PATCH v2 0/9] virtio: aio handler API Christian Borntraeger
2016-04-01 15:16 ` Christian Borntraeger
2016-04-03 9:00 ` Michael S. Tsirkin
2016-04-01 14:06 ` Cornelia Huck
2016-04-03 9:29 ` Michael S. Tsirkin
2016-04-05 9:13 ` Fam Zheng
2016-04-05 10:15 ` Christian Borntraeger
-- strict thread matches above, loose matches on Subject: below --
2016-03-30 12:47 [Qemu-devel] [PATCH resend " Paolo Bonzini
2016-03-30 12:48 ` [Qemu-devel] [PATCH 6/9] virtio-blk: use aio handler for data plane Paolo Bonzini
2016-03-30 15:25 ` Cornelia Huck
2016-03-30 15:42 ` Paolo Bonzini
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