Re: [PATCH vhost 11/17] virtio_ring: export premapped to driver by struct virtqueue
From: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Date: 2024-02-01 03:19:46
Also in:
bpf, kvm, linux-remoteproc, linux-s390, linux-um, platform-driver-x86, virtualization
On Wed, 31 Jan 2024 17:12:43 +0800, Jason Wang [off-list ref] wrote:
On Tue, Jan 30, 2024 at 7:43 PM Xuan Zhuo [off-list ref] wrote:quoted
Export the premapped to drivers, then drivers can check the vq premapped mode after the find_vqs().This looks odd, it's the charge of the driver to set premapped, so it should know it?
If the use_dma_api is false, we can not enable the premapped mode. Though we wrapped dma apis, but the AF_XDP use the default dma api directly. As we discussed, we just work in premapped mode when the use_dma_api is true. Thanks.
Thanks