freebsd-dev/sys/pc98/i386
KATO Takenori 9ad861edee - For some old Cyrix CPUs, %cr2 is clobbered by interrupts. This
problem is worked around by using an interrupt gate for the page
   fault handler.  This code was originally made for NetBSD/pc98 by
   Naofumi Honda <honda@kururu.math.sci.hokudai.ac.jp> and has already
   been in PC98 tree.  Because of this bug, trap_fatal cannot show
   correct page fault address if %cr2 is obtained in this function.
   Therefore, trap_fatal uses the value from trap() function.
-  The trap handler always enables interruption when buggy application
   or kernel code has disabled interrupts and then trapped.  This code
   was prepared by Bruce Evans <bde@FreeBSD.org>.

Submitted by:	Bruce Evans <bde@FreeBSD.org>
		Naofumi Honda <honda@kururu.math.sci.hokudai.ac.jp>
1998-12-02 08:15:17 +00:00
..
machdep.c - For some old Cyrix CPUs, %cr2 is clobbered by interrupts. This 1998-12-02 08:15:17 +00:00
userconfig.c Sync with sys/i386/i386/userconfig.c revision up to 1.115. 1998-11-06 08:08:05 +00:00