On Friday 06 June 2008 11:07:32 pm John Baldwin wrote: > jhb 2008-06-07 03:07:32 UTC > > FreeBSD src repository > > Modified files: > sys/boot/i386/libi386 biossmap.c > Log: > SVN rev 179631 on 2008-06-07 03:07:32Z by jhb > > Workaround a bug in the BIOS of Dell R900 machines. Specifically, each > entry in the SMAP is a 20 byte structure and they are queried from the > BIOS via sucessive BIOS calls. Due to an apparent bug in the R900's > BIOS, for some SMAP requests the BIOS overflows the 20 byte buffer > trashing a few bytes of memory immediately after the SMAP structure. As > a workaround, add 8 bytes of padding after the SMAP structure used in > the loader for SMAP queries. > > PR: i386/122668 > Submitted by: Mike Hibler mike flux.utah.edu, silby > MFC after: 3 days
The code to parse the SMAP in the kernel from vm86 mode is unaffected as it allocates an entire page for use when fetching the SMAP entry. -- John Baldwin _______________________________________________ cvs-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/cvs-all To unsubscribe, send any mail to "[EMAIL PROTECTED]"
