Re: [PATCH 05/11] block: add max_hw_transfer to BlockLimits

2021-06-25 Thread Max Reitz
On 24.06.21 20:04, Paolo Bonzini wrote: For block host devices, I/O can happen through either the kernel file descriptor I/O system calls (preadv/pwritev, io_submit, io_uring) or the SCSI passthrough ioctl SG_IO. In the latter case, the size of each transfer can be limited by the HBA, while for

[PATCH 05/11] block: add max_hw_transfer to BlockLimits

2021-06-24 Thread Paolo Bonzini
For block host devices, I/O can happen through either the kernel file descriptor I/O system calls (preadv/pwritev, io_submit, io_uring) or the SCSI passthrough ioctl SG_IO. In the latter case, the size of each transfer can be limited by the HBA, while for file descriptor I/O the kernel is able to