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Date: Tue, 12 Mar 2013 10:53:26 +0400
From: Lev Serebryakov <lev@FreeBSD.org>
Organization: FreeBSD
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To: Jim Harris <jimharris@freebsd.org>
Subject: Re: Unmapped buffers: to be merged in several days
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References: <20130311091852.GR3794@kib.kiev.ua> <86k3pe1cl3.fsf@ds4.des.no>
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Cc: Konstantin Belousov <kostikbel@gmail.com>, arch@freebsd.org
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Hello, Jim.
You wrote 12 =D0=BC=D0=B0=D1=80=D1=82=D0=B0 2013 =D0=B3., 2:22:47:

JH> Please note that XOR checksumming support only exists in the
JH> E5-1600/2400/2600/4600 series (Sandy Bridge Xeon) and C5500/C3500 series
JH> (Jasper Forest - based on Nehalem Xeon) processors.  The SNB Xeon series
  And  what  about  ICHxR/ICHxDO (where x =3D 7, 8, 9, 10) chipsets? They s=
upport
software RAID5 in Windows drivers, is it support pure-software? I
understand, that it is not true-hardware RAID, but does they have XOR
engine for unmapped buffers?

--=20
// Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>