>Number:         10329
>Category:       port-i386
>Synopsis:       APM_ALLOW_BOGUS_SEGMENTS doesn't map data area right if outside ISA hole
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jun 08 19:20:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     John Kohl
>Release:        NetBSD-1.4ZA
>Organization:
NetBSD Kernel Hackers `R` Us
>Environment:
	Sources for NetBSD-1.4ZA
System: NetBSD kolvir.arlington.ma.us 1.4X NetBSD 1.4X (KOLVIR) #4: Sun Apr 9 17:56:09 EDT 2000 jtk@kolvir.arlington.ma.us:/usr/u4/sandbox/src/sys/arch/i386/compile/KOLVIR i386

>Description:
The change adding APM_ALLOW_BOGUS_SEGMENTS won't work right if the
physical address specified by the BIOS is not in the ISA memory hole.
The segment is mapped using a virtual address coputed with ISA_HOLE_VADDR()
which won't necessarily work right for other physical addresses.

>How-To-Repeat:
	
>Fix:
If an address outside the "known good" sections is required, then the
driver must ensure that the physical page is reserved for APM's use, and
arrange/compute a virtual mapping in kernel address space.


>Release-Note:
>Audit-Trail:
>Unformatted: