[PATCH 1/2] xen: arm: enable 32bit kernel stack trace

[Bamvor Jian Zhang <bjzhang@suse.com>]

Signed-off-by: Bamvor Jian Zhang <bjzhang@suse.com>
---
 xen/arch/arm/traps.c | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c
index 4c0fc32..70623ee 100644
--- a/xen/arch/arm/traps.c
+++ b/xen/arch/arm/traps.c
@@ -628,13 +628,21 @@ static void show_guest_stack(struct vcpu *v, struct cpu_user_regs *regs)
         printk("No stack trace for guest user-mode\n");
         return;
 
-    case PSR_MODE_FIQ:
-    case PSR_MODE_IRQ:
-    case PSR_MODE_SVC:
-    case PSR_MODE_ABT:
-    case PSR_MODE_UND:
-        printk("No stack trace for 32-bit guest kernel-mode\n");
-        return;
+    case PSR_MODE_FIQ: 
+        sp = regs->sp_fiq; 
+        break; 
+    case PSR_MODE_IRQ: 
+        sp = regs->sp_irq; 
+        break; 
+    case PSR_MODE_SVC: 
+        sp = regs->sp_svc; 
+        break; 
+    case PSR_MODE_ABT: 
+        sp = regs->sp_abt; 
+        break; 
+    case PSR_MODE_UND: 
+        sp = regs->sp_und; 
+        break; 
 
 #ifdef CONFIG_ARM_64
     case PSR_MODE_EL1t:
-- 
1.8.1.4