Date: Mon, 28 Dec 2009 18:59:13 +0000 (UTC) From: "Justin T. Gibbs" <gibbs@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/dev/xen/blkfront blkfront.c Message-ID: <200912281859.nBSIxKan029166@repoman.freebsd.org>
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gibbs 2009-12-28 18:59:13 UTC
FreeBSD src repository
Modified files:
sys/dev/xen/blkfront blkfront.c
Log:
SVN rev 201138 on 2009-12-28 18:59:13Z by gibbs
Correct alignment and boundary constraints in blkfront's bus dma tag. The
blkif interface in Xen requires all I/O to be 512 byte aligned with each
segment bounded by a 4k page.
Note: This submission only documents the proper contraints for blkif I/O.
The alignment code in busdma does not yet handle alignment constraints
correctly in all cases.
Revision Changes Path
1.15 +2 -2 src/sys/dev/xen/blkfront/blkfront.c
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