Author: jhb
Date: Wed Mar 28 16:32:17 2012
New Revision: 233613
URL: http://svn.freebsd.org/changeset/base/233613
Log:
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.
Tested by: rstone
MFC after: 1 week
Modified:
head/sys/x86/include/segments.h
Modified: head/sys/x86/include/segments.h
==============================================================================
--- head/sys/x86/include/segments.h Wed Mar 28 16:32:15 2012
(r233612)
+++ head/sys/x86/include/segments.h Wed Mar 28 16:32:17 2012
(r233613)
@@ -215,8 +215,8 @@ union descriptor {
#define IDT_MC 18 /* #MC: Machine Check */
#define IDT_XF 19 /* #XF: SIMD Floating-Point Exception */
#define IDT_IO_INTS NRSVIDT /* Base of IDT entries for I/O
interrupts. */
-#define IDT_DTRACE_RET 0x20 /* DTrace pid provider Interrupt Vector
*/
#define IDT_SYSCALL 0x80 /* System Call Interrupt Vector */
+#define IDT_DTRACE_RET 0x92 /* DTrace pid provider Interrupt Vector
*/
#if defined(__i386__) || defined(__ia64__)
/*
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