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MFC 303474
authorsephe <sephe@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Wed, 12 Oct 2016 09:13:16 +0000 (09:13 +0000)
committersephe <sephe@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Wed, 12 Oct 2016 09:13:16 +0000 (09:13 +0000)
commitb3cd75916ca94c0e648d6e11a50450267aec4dea
treec1e6277232cbb69740d6c20d5ef42b585600551atree | snapshot
parentd2dea4f4ec6929817ceb5a37dd59cf46cb18c5e6commit | diff
MFC 303474

    hyperv/storvsc: Use busdma(9) and enable PIM_UNMAPPED by default.

    The UNMAPPED I/O greatly improves userland direct disk I/O performance
    by 35% ~ 135%.

    Submitted by:   Hongjiang Zhang <honzhan microsoft com>
    Sponsored by:   Microsoft
    Differential Revision:  https://reviews.freebsd.org/D7195

git-svn-id: svn://svn.freebsd.org/base/stable/10@307134 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c diff | blob | history
10-STABLE