Messages in this thread |  | | Date | Wed, 9 May 2001 12:57:48 -0700 (PDT) | From | Matthew Jacob <> | Subject | Re: Wow! Is memory ever cheap! |
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On Wed, 9 May 2001, [ISO-8859-1] Gérard Roudier wrote:
> > > On Tue, 8 May 2001, Dan Hollis wrote: > > > On Tue, 8 May 2001, Larry McVoy wrote: > > > which is a text version of the paper I mentioned before. The basic > > > message of the paper is that it really doesn't help much to have things > > > like ECC unless you can be sure that 100% of the rest of your system > > > has similar checks. > > > > UDMA has crc, scsi has parity, pci has (i think) parity, tcpip has crc, > > your cpu l1 and l2 have ecc... > > SCSI Ultra-160 has CRC. > > PCI has parity (btw, you think right), but only a few drivers make sure > PCI parity checking is enabled. On the other hand, a PCI parity error
Sun's panic if they get SERR or PERR.
> should be considered as extremally serious and the system should be > stopped when such happens. > > Btw, it seems (read at the pci list) that the original PCI hadn't parity. > After all, PCI had been designed for PC machines... :) > > > Looks like similar checks are already there. > > > > -Dan > > > Gérard. > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
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