[Xen-changelog] [xen-unstable] [IA64] xenoprof: make xenoprofile_get_mode() vti domain aware

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Alex Williamson <alex.williamson@xxxxxx>
# Date 1197909406 25200
# Node ID e88253dfefdc33e773ce5c4489512875fec262ad
# Parent  d3881629d572b46d4ba7fe5f5009166948d1ca84
[IA64] xenoprof: make xenoprofile_get_mode() vti domain aware

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
---
 xen/arch/ia64/xen/oprofile/xenoprof.c |   55 +++++++++++++++++++++++++---------
 1 files changed, 42 insertions(+), 13 deletions(-)

diff -r d3881629d572 -r e88253dfefdc xen/arch/ia64/xen/oprofile/xenoprof.c
--- a/xen/arch/ia64/xen/oprofile/xenoprof.c     Mon Dec 17 09:33:52 2007 -0700
+++ b/xen/arch/ia64/xen/oprofile/xenoprof.c     Mon Dec 17 09:36:46 2007 -0700
@@ -24,29 +24,58 @@
 #include <xen/sched.h>
 #include <public/xen.h>
 #include <xen/xenoprof.h>
+#include <asm/vmx.h>    /* for vmx_user_mode() */
 
 int
 xenoprofile_get_mode(struct vcpu *v, struct cpu_user_regs * const regs)
 {
     int mode;
 
-    // mode
-    // 0: user, 1: kernel, 2: xen
-    switch (ring(regs))
-    {
+    /*
+     * mode
+     * 0: user, 1: kernel, 2: xen
+     * see linux/driver/oprofile/cpu_buffer.h
+     */
+#define CPU_MODE_USER           0
+#define CPU_MODE_KERNEL         1
+#define CPU_MODE_XEN            2
+    if (VMX_DOMAIN(v)) {
+        if (vmx_user_mode(regs)) {
+            switch (ring(regs)) {
+            case 3:
+                mode = CPU_MODE_USER;
+                break;
+            case 0:
+                mode = CPU_MODE_KERNEL;
+                break;
+            /* case 0: case 1: */
+            default:
+                gdprintk(XENLOG_ERR, "%s:%d ring%d in vmx is used!\n",
+                         __func__, __LINE__, ring(regs));
+                mode = CPU_MODE_KERNEL; /* fall back to kernel mode. */
+                break;
+            }
+        } else {
+            mode = CPU_MODE_XEN;
+            BUG_ON(ring(regs) != 0);
+        }
+    } else {
+        switch (ring(regs)) {
         case 3:
-                mode = 0;
-                break;
+            mode = CPU_MODE_USER;
+            break;
         case CONFIG_CPL0_EMUL:
-                mode = 1;
-                break;
+            mode = CPU_MODE_KERNEL;
+            break;
         case 0:
-                mode = 2;
-                break;
+            mode = CPU_MODE_XEN;
+            break;
         default:
-                gdprintk(XENLOG_ERR, "%s:%d ring%d is used!\n", __func__,
-                         __LINE__, 3 - CONFIG_CPL0_EMUL);
-                mode = 1; /* fall back to kernel mode. */
+            gdprintk(XENLOG_ERR, "%s:%d ring%d in pv is used!\n", __func__,
+                     __LINE__, 3 - CONFIG_CPL0_EMUL);
+            mode = CPU_MODE_KERNEL; /* fall back to kernel mode. */
+            break;
+        }
     }
     return mode;
 }

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