In lazy EE magic, we may have a lazy interrupt occured while
entering kgdb, but we really don't want to replay that interrupt
for kgdb, so we have to clear the PACA_IRQ_HARD_DIS force to
make sure we can exit directly from this debug exception.
Signed-off-by: Tiejun Chen <tiejun.c...@windriver.com>
---
arch/powerpc/kernel/kgdb.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index 447c14b..9872f58 100644
--- a/arch/powerpc/kernel/kgdb.c
+++ b/arch/powerpc/kernel/kgdb.c
@@ -185,6 +185,14 @@ static int kgdb_singlestep(struct pt_regs *regs)
/* Restore current_thread_info lastly. */
memcpy(exception_thread_info, backup_current_thread_info,
sizeof *thread_info);
+#ifdef CONFIG_PPC64
+ /*
+ * Clear the PACA_IRQ_HARD_DIS from the pending mask
+ * since we are about to exit this directly from debug
+ * exception without any replay interrupt in lazy EE case.
+ */
+ local_paca->irq_happened &= ~PACA_IRQ_HARD_DIS;
+#endif
return 1;
}
--
1.7.9.5
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