svn commit: r234146 - in stable/8/sys: amd64/include i386/conf i386/include

[John Baldwin]

Author: jhb
Date: Wed Apr 11 20:19:29 2012
New Revision: 234146
URL: http://svn.freebsd.org/changeset/base/234146

Log:
  MFC 232228,233613:
  Move the DTrace return IDT vector back up from 0x20 to 0x92.  The 0x20
  vector is currently dedicated to servicing IRQ 0 from the 8259A's, so
  it shouldn't be overloaded for DTrace.

Modified:
  stable/8/sys/amd64/include/segments.h
  stable/8/sys/i386/include/segments.h
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/boot/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/e1000/   (props changed)
  stable/8/sys/i386/conf/XENHVM   (props changed)

Modified: stable/8/sys/amd64/include/segments.h
==============================================================================
--- stable/8/sys/amd64/include/segments.h	Wed Apr 11 20:19:07 2012	(r234145)
+++ stable/8/sys/amd64/include/segments.h	Wed Apr 11 20:19:29 2012	(r234146)
@@ -214,7 +214,7 @@ struct region_descriptor {
 #define	IDT_XF		19	/* #XF: SIMD Floating-Point Exception */
 #define	IDT_IO_INTS	NRSVIDT	/* Base of IDT entries for I/O interrupts. */
 #define	IDT_SYSCALL	0x80	/* System Call Interrupt Vector */
-#define	IDT_DTRACE_RET	0x20	/* DTrace pid provider Interrupt Vector */
+#define	IDT_DTRACE_RET	0x92	/* DTrace pid provider Interrupt Vector */
 
 /*
  * Entries in the Global Descriptor Table (GDT)

Modified: stable/8/sys/i386/include/segments.h
==============================================================================
--- stable/8/sys/i386/include/segments.h	Wed Apr 11 20:19:07 2012	(r234145)
+++ stable/8/sys/i386/include/segments.h	Wed Apr 11 20:19:29 2012	(r234146)
@@ -207,7 +207,7 @@ struct region_descriptor {
 #define	IDT_XF		19	/* #XF: SIMD Floating-Point Exception */
 #define	IDT_IO_INTS	NRSVIDT	/* Base of IDT entries for I/O interrupts. */
 #define	IDT_SYSCALL	0x80	/* System Call Interrupt Vector */
-#define	IDT_DTRACE_RET	0x20	/* DTrace pid provider Interrupt Vector */
+#define	IDT_DTRACE_RET	0x92	/* DTrace pid provider Interrupt Vector */
 
 /*
  * Entries in the Global Descriptor Table (GDT)