On Wed, Mar 29, 2006 at 06:41:56AM +0000, Nate Lawson wrote: > njl 2006-03-29 06:41:56 UTC > > FreeBSD src repository > > Modified files: > sys/dev/acpica/Osd OsdHardware.c > Log: > Add a blacklist for bad IO ports that AML should never touch. It seems > some systems were designed so that AML writes to various resources shared > with OS drivers, including the RTC, PIC, PCI, etc. These writes could > collide with writes by the OS and should never be performed. For now, we > print a message if such an access occurs, but do not block it. To block > the access, the tunable "debug.acpi.block_bad_io" can be set to 1. In the > future, we will flip the switch and this will become the default. > > Information about this problem was found in Microsoft KB 283649. They > block IO accesses if the BIOS indicates via _OSI that it is Windows 2001 > or higher. They always block accesses to the PIC, cascaded PIC, and ELCRs, > no matter how old the BIOS.
Windows 2001 or higher? -- Brian Fundakowski Feldman \'[ FreeBSD ]''''''''''\ <> [EMAIL PROTECTED] \ The Power to Serve! \ Opinions expressed are my own. \,,,,,,,,,,,,,,,,,,,,,,\ _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/cvs-all To unsubscribe, send any mail to "[EMAIL PROTECTED]"
