From: Dedhi <[EMAIL PROTECTED]> Dapat URL dari temen, yang berguna juga : http://kt.zork.net/kernel-traffic/kt20010216_107_print.html#6 http://mailman.real-time.com/pipermail/linux-kernel/2001-February/022945.html Makin yakin gue ada problem ama bus master capability untuk Via Chipset, soalnya SCSI card (Tekram DC315) dan Ethernet (3Com 905B) gue semuanya punya kemampuan itu juga dan jadi masalah :( VIA silent disk corruption - likely fix Peter Horton [EMAIL PROTECTED] Mon, 5 Feb 2001 15:08:02 +0000 Previous message: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait /notify + callback chains Next message: VIA silent disk corruption - likely fix Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] I've found the cause of silent disk corruption on my A7V motherboard, and it might affect all boards with the same North bridge (KT133 etc). For some reason the IDE controller(s) was sometimes picking up stale data during bus master DMA to the drive. Assuming that there was no bug in the CPU it had to be the North bridge that was caching the stuff when it shouldn't have been. I assume the problem would also apply to other bus masters (SCSI, NIC etc). Scanning the motherboard manual showed up a chipset setting "PCI master read caching" which I suspect is the culprit. According to the manual this defaults to "on" for Athlons and "off" for Durons (obviously other BIOSes / MB might treat this setting differently). Unfortunately my BIOS does not allow me to change this setting independently [1], I only have the choice of running the machine in "normal" or "optimal" configuration to alter this setting ("optimal" is the default). In "normal" mode my machine is rock solid and I see no corruption, however "normal" mode also changes a lot of other settings (AGP speed, DRAM interleave etc). Anyone experiencing such corruption should look for a BIOS setting which disables this "feature". If anyone out there has a BIOS which allows them to change just this one setting can they diff the "lspci -vvxxx" output with the setting off and then on so we can isolate which host bridge biti(s) control this feature. Maybe we can then add it to 'pci_quirks' and reduce the number of VIA corruption reports. P. -- Compu-Mania MailingList, provided by PT Centrin Online Tbk Unsubscribe: [EMAIL PROTECTED], body: unsubscribe Compu-Mania Archive: http://www.mail-archive.com/[email protected]/ Info: [EMAIL PROTECTED], body: help
