[xen staging] xen/arm: traps: Don't panic when receiving an unknown debug trap

[patchbot@xxxxxxx]

commit 957708c2d1ae25d7375abd5e5e70c3043d64f1f1
Author:     Julien Grall <jgrall@xxxxxxxxxx>
AuthorDate: Thu Nov 5 22:31:06 2020 +0000
Commit:     Stefano Stabellini <sstabellini@xxxxxxxxxx>
CommitDate: Thu Nov 5 18:00:10 2020 -0800

    xen/arm: traps: Don't panic when receiving an unknown debug trap
    
    Even if debug trap are only meant for debugging purpose, it is quite
    harsh to crash Xen if one of the trap sent by the guest is not handled.
    
    So switch from a panic() to a printk().
    
    Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/arch/arm/traps.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c
index 8f40d0e0b6..a36f145e67 100644
--- a/xen/arch/arm/traps.c
+++ b/xen/arch/arm/traps.c
@@ -1410,7 +1410,7 @@ static void do_debug_trap(struct cpu_user_regs *regs, 
unsigned int code)
         show_execution_state(regs);
         break;
     default:
-        panic("DOM%d: Unhandled debug trap %#x\n", domid, code);
+        printk("DOM%d: Unhandled debug trap %#x\n", domid, code);
         break;
     }
 }
--
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