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authorIsaku Yamahata <yamahata@valinux.co.jp>2009-03-04 21:05:34 +0900
committerTony Luck <tony.luck@intel.com>2009-03-26 10:48:33 -0700
commitdd97d5cb540939602cba9af6f88e883a6fe451f0 (patch)
tree8425ba5692e3fe9175ed10ce85d02ef4a77dedd8 /arch/ia64/kernel/fsys.S
parentac93925acbf841d70a95ab576b76b15a34d194eb (diff)
ia64/pv_ops: add hooks to paravirtualize fsyscall implementation.
Add two hooks, paravirt_get_fsyscall_table() and paravirt_get_fsys_bubble_doen() to paravirtualize fsyscall implementation. This patch just add the hooks fsyscall and don't paravirtualize it. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/kernel/fsys.S')
-rw-r--r--arch/ia64/kernel/fsys.S17
1 files changed, 9 insertions, 8 deletions
diff --git a/arch/ia64/kernel/fsys.S b/arch/ia64/kernel/fsys.S
index c1625c7e177..788319f121a 100644
--- a/arch/ia64/kernel/fsys.S
+++ b/arch/ia64/kernel/fsys.S
@@ -25,6 +25,7 @@
#include <asm/unistd.h>
#include "entry.h"
+#include "paravirt_inst.h"
/*
* See Documentation/ia64/fsys.txt for details on fsyscalls.
@@ -602,7 +603,7 @@ ENTRY(fsys_fallback_syscall)
mov r26=ar.pfs
END(fsys_fallback_syscall)
/* FALL THROUGH */
-GLOBAL_ENTRY(fsys_bubble_down)
+GLOBAL_ENTRY(paravirt_fsys_bubble_down)
.prologue
.altrp b6
.body
@@ -640,7 +641,7 @@ GLOBAL_ENTRY(fsys_bubble_down)
*
* PSR.BE : already is turned off in __kernel_syscall_via_epc()
* PSR.AC : don't care (kernel normally turns PSR.AC on)
- * PSR.I : already turned off by the time fsys_bubble_down gets
+ * PSR.I : already turned off by the time paravirt_fsys_bubble_down gets
* invoked
* PSR.DFL: always 0 (kernel never turns it on)
* PSR.DFH: don't care --- kernel never touches f32-f127 on its own
@@ -650,7 +651,7 @@ GLOBAL_ENTRY(fsys_bubble_down)
* PSR.DB : don't care --- kernel never enables kernel-level
* breakpoints
* PSR.TB : must be 0 already; if it wasn't zero on entry to
- * __kernel_syscall_via_epc, the branch to fsys_bubble_down
+ * __kernel_syscall_via_epc, the branch to paravirt_fsys_bubble_down
* will trigger a taken branch; the taken-trap-handler then
* converts the syscall into a break-based system-call.
*/
@@ -741,14 +742,14 @@ GLOBAL_ENTRY(fsys_bubble_down)
nop.m 0
(p8) br.call.sptk.many b6=b6 // B (ignore return address)
br.cond.spnt ia64_trace_syscall // B
-END(fsys_bubble_down)
+END(paravirt_fsys_bubble_down)
.rodata
.align 8
- .globl fsyscall_table
+ .globl paravirt_fsyscall_table
- data8 fsys_bubble_down
-fsyscall_table:
+ data8 paravirt_fsys_bubble_down
+paravirt_fsyscall_table:
data8 fsys_ni_syscall
data8 0 // exit // 1025
data8 0 // read
@@ -1033,4 +1034,4 @@ fsyscall_table:
// fill in zeros for the remaining entries
.zero:
- .space fsyscall_table + 8*NR_syscalls - .zero, 0
+ .space paravirt_fsyscall_table + 8*NR_syscalls - .zero, 0