paravirtualize minstate.h which are hand written assembly code.
They include sensitive or performance critical privileged
instructions. So that they are appropriate for paravirtualization.
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@xxxxxxxxx>
Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
---
arch/ia64/kernel/minstate.h | 13 +++++++------
arch/ia64/kernel/paravirt_inst.h | 29 +++++++++++++++++++++++++++++
include/asm-ia64/native/inst.h | 2 ++
3 files changed, 38 insertions(+), 6 deletions(-)
create mode 100644 arch/ia64/kernel/paravirt_inst.h
diff --git a/arch/ia64/kernel/minstate.h b/arch/ia64/kernel/minstate.h
index c9ac8ba..f00ca70 100644
--- a/arch/ia64/kernel/minstate.h
+++ b/arch/ia64/kernel/minstate.h
@@ -2,6 +2,7 @@
#include <asm/cache.h>
#include "entry.h"
+#include "paravirt_inst.h"
/*
* DO_SAVE_MIN switches to the kernel stacks (if necessary) and saves
@@ -28,16 +29,16 @@
* Note that psr.ic is NOT turned on by this macro. This is so that
* we can pass interruption state as arguments to a handler.
*/
-#define DO_SAVE_MIN(COVER,SAVE_IFS,EXTRA)
\
+#define IA64_NATIVE_DO_SAVE_MIN(__COVER,SAVE_IFS,EXTRA)
\
mov r16=IA64_KR(CURRENT); /* M */
\
mov r27=ar.rsc; /* M */
\
mov r20=r1; /* A */
\
mov r25=ar.unat; /* M */
\
- mov r29=cr.ipsr; /* M */
\
+ MOV_FROM_IPSR(p0,r29); /* M */
\
mov r26=ar.pfs; /* I */
\
- mov r28=cr.iip; /* M */
\
+ MOV_FROM_IIP(r28); /* M */
\
mov r21=ar.fpsr; /* M */
\
- COVER; /* B;; (or nothing) */
\
+ __COVER; /* B;; (or nothing) */
\
;;
\
adds r16=IA64_TASK_THREAD_ON_USTACK_OFFSET,r16;
\
;;
\
@@ -192,6 +193,6 @@
st8 [r25]=r10; /* ar.ssd */ \
;;
-#define SAVE_MIN_WITH_COVER DO_SAVE_MIN(cover, mov r30=cr.ifs,)
-#define SAVE_MIN_WITH_COVER_R19 DO_SAVE_MIN(cover, mov r30=cr.ifs, mov
r15=r19)
+#define SAVE_MIN_WITH_COVER DO_SAVE_MIN(COVER, mov r30=cr.ifs,)
+#define SAVE_MIN_WITH_COVER_R19 DO_SAVE_MIN(COVER, mov r30=cr.ifs, mov
r15=r19)
#define SAVE_MIN DO_SAVE_MIN( , mov r30=r0, )
diff --git a/arch/ia64/kernel/paravirt_inst.h b/arch/ia64/kernel/paravirt_inst.h
new file mode 100644
index 0000000..5cad6fb
--- /dev/null
+++ b/arch/ia64/kernel/paravirt_inst.h
@@ -0,0 +1,29 @@
+/******************************************************************************
+ * linux/arch/ia64/xen/paravirt_inst.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifdef __IA64_ASM_PARAVIRTUALIZED_XEN
+#include <asm/xen/inst.h>
+#include <asm/xen/minstate.h>
+#else
+#include <asm/native/inst.h>
+#endif
+
diff --git a/include/asm-ia64/native/inst.h b/include/asm-ia64/native/inst.h
index 295fde3..c167b7d 100644
--- a/include/asm-ia64/native/inst.h
+++ b/include/asm-ia64/native/inst.h
@@ -20,6 +20,8 @@
*
*/
+#define DO_SAVE_MIN IA64_NATIVE_DO_SAVE_MIN
+
#ifdef CONFIG_PARAVIRT_GUEST_ASM_CLOBBER_CHECK
# define PARAVIRT_POISON 0xdeadbeefbaadf00d
# define CLOBBER(clob) \
--
1.5.3
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