Messages in this thread | | | Subject | Re: [PATCH v2 1/5] virtio-mmio: add notify feature for per-queue | From | Jason Wang <> | Date | Wed, 12 Feb 2020 11:39:54 +0800 |
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On 2020/2/11 下午7:33, Michael S. Tsirkin wrote: > On Mon, Feb 10, 2020 at 05:05:17PM +0800, Zha Bin wrote: >> From: Liu Jiang<gerry@linux.alibaba.com> >> >> The standard virtio-mmio devices use notification register to signal >> backend. This will cause vmexits and slow down the performance when we >> passthrough the virtio-mmio devices to guest virtual machines. >> We proposed to update virtio over MMIO spec to add the per-queue >> notify feature VIRTIO_F_MMIO_NOTIFICATION[1]. It can allow the VMM to >> configure notify location for each queue. >> >> [1]https://lkml.org/lkml/2020/1/21/31 >> >> Signed-off-by: Liu Jiang<gerry@linux.alibaba.com> >> Co-developed-by: Zha Bin<zhabin@linux.alibaba.com> >> Signed-off-by: Zha Bin<zhabin@linux.alibaba.com> >> Co-developed-by: Jing Liu<jing2.liu@linux.intel.com> >> Signed-off-by: Jing Liu<jing2.liu@linux.intel.com> >> Co-developed-by: Chao Peng<chao.p.peng@linux.intel.com> >> Signed-off-by: Chao Peng<chao.p.peng@linux.intel.com> > Hmm. Any way to make this static so we don't need > base and multiplier?
E.g page per vq?
Thanks
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