Module Name: src Committed By: jdolecek Date: Tue Apr 21 13:56:18 UTC 2020
Modified Files: src/sys/arch/xen/xen: xbdback_xenbus.c Log Message: add support for indirect segments, which makes it possible to pass up to MAXPHYS (implementation limit, interface allows more) using single request request using indirect segment requires 1 extra copy hypercall per request, but saves 2 shared memory hypercalls (map_grant/unmap_grant), so should be net performance boost due to less TLB flushing this also effectively doubles disk queue size for xbd(4) To generate a diff of this commit: cvs rdiff -u -r1.85 -r1.86 src/sys/arch/xen/xen/xbdback_xenbus.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.