Date: Mon, 2 Jul 2007 09:27:12 -0700 From: Suleiman Souhlal <ssouhlal@FreeBSD.org> To: Takeharu KATO <takeharu1219@ybb.ne.jp> Cc: current@freebsd.org Subject: Re: [PATCH] Machine Check Architecture on amd64 Message-ID: <ABBCE6EB-C6D6-465E-8E6A-E9B6DD5F1FE7@FreeBSD.org> In-Reply-To: <46892373.1080602@ybb.ne.jp> References: <46806B3E.2060701@FreeBSD.org> <4688EBC2.8070703@ybb.ne.jp> <27D8F2CD-156E-4962-A187-63E42CAE2B6F@FreeBSD.org> <46892373.1080602@ybb.ne.jp>
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On Jul 2, 2007, at 9:10 AM, Takeharu KATO wrote: > Hi > >> While I don't know about Intel CPUs, K8 CPUs from AMD have a >> hardware DRAM/data cache scrubber, so I didn't bother implementing >> it, and I > Certainly, they does not have hardware scrubber. Actually, I looked at the documentation for Intel E7501 chipset, and it seems like it also has a hardware scrubber: See http:// download.intel.com/design/chipsets/datashts/25192702.pdf section 5.8.2. So, supposedly, other Intel chipsets for servers might also have it. You can find information about the AMD scrubber in http://www.amd.com/ us-en/assets/content_type/DownloadableAssets/dwamd_26049.pdf , section 3.6.6. -- Suleiman
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