Re: [PATCH v7 13/13] virtio-blk: use BDRV_REQ_REGISTERED_BUF optimization hint

2022-10-19 Thread Stefano Garzarella
On Thu, Oct 13, 2022 at 02:59:08PM -0400, Stefan Hajnoczi wrote: Register guest RAM using BlockRAMRegistrar and set the BDRV_REQ_REGISTERED_BUF flag so block drivers can optimize memory accesses in I/O requests. This is for vdpa-blk, vhost-user-blk, and other I/O interfaces that rely on DMA mapp

[PATCH v7 13/13] virtio-blk: use BDRV_REQ_REGISTERED_BUF optimization hint

2022-10-13 Thread Stefan Hajnoczi
Register guest RAM using BlockRAMRegistrar and set the BDRV_REQ_REGISTERED_BUF flag so block drivers can optimize memory accesses in I/O requests. This is for vdpa-blk, vhost-user-blk, and other I/O interfaces that rely on DMA mapping/unmapping. Signed-off-by: Stefan Hajnoczi --- include/hw/vir