My fault I accidentally replaced a PAGE_MASK with a PAGE_SIZE. the resulting bug only changes teh behaviour on unaligned pages which are only possible on the raw device. (e.g. fsck)
the Cyrix 5530 we used to test has a bug where we cannot do unalligned transfers by DMA anyhow, so we never hit this bug.. fixed in -current .... will be fixxed in -stable when I reintroduce the patch... julian On Thu, 22 Jul 1999 sth...@nethelp.no wrote: > > I'm experiencing serious problems with DMA (even normal DMA, not UDMA) > > on recent versions of -STABLE. Here's an excerpt from messages; kernel > > #3 is a recent -STABLE (yesterday's sources), while kernel #2 is > > 3.2-RELEASE. The config file for both is identical. > > I can confirm problems with DMA from IDE disks in -STABLE. The problems > seem to have been introduced in > > $Id: ide_pci.c,v 1.28.2.1 1999/07/20 22:58:20 julian Exp $ > > And the effect for me is that the system stops in singleuser mode, with > a "DMA failure" message. This is on a 440BX/PII-350 system. > > Reverting to 1.28 (from 17. January 1999) fixes the problems. > > Please back out 1.28.2.1, at least in -STABLE. > > Steinar Haug, Nethelp consulting, sth...@nethelp.no > > > To Unsubscribe: send mail to majord...@freebsd.org > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-hackers" in the body of the message