[ Upstream commit ab8a6d821179ab9bea1a9179f535ccba6330c1ed ]
KGDB_call_nmi_hook is called by other cpu through smp call.
MIPS smp call is processed in ipi irq handler and regs is saved in
handle_int.
So kgdb_call_nmi_hook get regs by get_irq_regs and regs will be passed
to kgdb_cpu_enter.
Signed-off-by: Chong Qiao <qiaoch...@loongson.cn>
Reviewed-by: Douglas Anderson <diand...@chromium.org>
Acked-by: Daniel Thompson <daniel.thomp...@linaro.org>
Signed-off-by: Paul Burton <paul.bur...@mips.com>
Cc: Ralf Baechle <r...@linux-mips.org>
Cc: James Hogan <jho...@kernel.org>
Cc: Will Deacon <will.dea...@arm.com>
Cc: Christophe Leroy <christophe.le...@c-s.fr>
Cc: linux-m...@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: QiaoChong <qiaoch...@loongson.cn>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
arch/mips/kernel/kgdb.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/mips/kernel/kgdb.c b/arch/mips/kernel/kgdb.c
index eb6c0d582626b..2c1e30ca7ee4e 100644
--- a/arch/mips/kernel/kgdb.c
+++ b/arch/mips/kernel/kgdb.c
@@ -33,6 +33,7 @@
#include <asm/processor.h>
#include <asm/sigcontext.h>
#include <linux/uaccess.h>
+#include <asm/irq_regs.h>
static struct hard_trap_info {
unsigned char tt; /* Trap type code for MIPS R3xxx and R4xxx */
@@ -214,7 +215,7 @@ static void kgdb_call_nmi_hook(void *ignored)
old_fs = get_fs();
set_fs(get_ds());
- kgdb_nmicallback(raw_smp_processor_id(), NULL);
+ kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs());
set_fs(old_fs);
}
--
2.20.1
