xen: arm: enable 32bit kernel stack trace

Signed-off-by: Bamvor Jian Zhang <bjzhang@suse.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c
index 4c0fc323ac4570b2aca2109e467417f16ed105a2..287dd7bea1780336b5ac97a40a8a36a1764e079a 100644 (file)
--- a/xen/arch/arm/traps.c
+++ b/xen/arch/arm/traps.c
@@ -629,12 +629,20 @@ static void show_guest_stack(struct vcpu *v, struct cpu_user_regs *regs)
         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:
-        printk("No stack trace for 32-bit guest kernel-mode\n");
-        return;
+        sp = regs->sp_und;
+        break;
 
 #ifdef CONFIG_ARM_64
     case PSR_MODE_EL1t: