CVS commit: src/sys/arch/xen/xen

["Jaromir Dolecek" <jdolecek%netbsd.org@localhost>]

Module Name:    src
Committed By:   jdolecek
Date:           Thu Apr 16 16:38:43 UTC 2020

Modified Files:
        src/sys/arch/xen/xen: xbd_xenbus.c

Log Message:
if backend supports it, use indirect segment for I/O requests over 32KB

there is some overhead for backend without persistent mappings
(backend needs to map the extra indirect segment page), but this
makes it possible to queue more I/O if using 64KB block size

tested on NetBSD/amd64 DomU against Linux/amd64 Dom0


To generate a diff of this commit:
cvs rdiff -u -r1.115 -r1.116 src/sys/arch/xen/xen/xbd_xenbus.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.