xen/arm: traps: Print a message in debug build when a guest dabt is not handled

This is useful for debugging low level kernel before the guest as setup
the vector table.

Note that the value of the IPA is only here for reference and may not
always be valid if the error came from a stage 1 table translation walk.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
[ ijc -- dropped spurious w/s change ]

diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c
index 47d6cef8a62b46142473af4e5fc2c587624afc04..258d4c5b8b7a957f633e258bf155b62918ecad22 100644 (file)
--- a/xen/arch/arm/traps.c
+++ b/xen/arch/arm/traps.c
@@ -2413,6 +2413,8 @@ static void do_trap_data_abort_guest(struct cpu_user_regs *regs,
     }
 
 bad_data_abort:
+    gdprintk(XENLOG_DEBUG, "HSR=0x%x pc=%#"PRIregister" gva=%#"PRIvaddr
+             " gpa=%#"PRIpaddr"\n", hsr.bits, regs->pc, info.gva, info.gpa);
     inject_dabt_exception(regs, info.gva, hsr.len);
 }