[RFC PATCH 3/4] arm64: Invoke pre_restart notifiers
From: Mathieu Desnoyers
Date: Tue Jun 18 2024 - 11:51:50 EST
Invoke the pre_restart notifiers after shutdown, before machine restart.
This allows preserving pmem memory across warm reboots.
Invoke the pre_restart notifiers before emergency machine restart as
well to cover the panic() scenario.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Vishal Verma <vishal.l.verma@xxxxxxxxx>
Cc: Dave Jiang <dave.jiang@xxxxxxxxx>
Cc: Ira Weiny <ira.weiny@xxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: nvdimm@xxxxxxxxxxxxxxx
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
---
arch/arm64/kernel/process.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 4ae31b7af6c3..4a27397617fb 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -129,6 +129,8 @@ void machine_restart(char *cmd)
local_irq_disable();
smp_send_stop();
+ do_kernel_pre_restart(cmd);
+
/*
* UpdateCapsule() depends on the system being reset via
* ResetSystem().
--
2.39.2