From: Carlos Bilbao <carlos.bilbao@kernel.org>
Include an arch/x86-specific function to halt CPU once the kernel has
finished handling a panic, by defining the weak function
cpu_halt_after_panic().
Signed-off-by: Carlos Bilbao (DigitalOcean) <carlos.bilbao@kernel.org>
Reviewed-by: Jan Glauber (DigitalOcean) <jan.glauber@gmail.com>
---
arch/x86/kernel/Makefile | 1 +
arch/x86/kernel/panic.c | 9 +++++++++
2 files changed, 10 insertions(+)
create mode 100644 arch/x86/kernel/panic.c
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index f7918980667a..0e4d87596f5d 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -85,6 +85,7 @@ obj-y += stacktrace.o
obj-y += cpu/
obj-y += acpi/
obj-y += reboot.o
+obj-y += panic.o
obj-$(CONFIG_X86_MSR) += msr.o
obj-$(CONFIG_X86_CPUID) += cpuid.o
obj-$(CONFIG_PCI) += early-quirks.o
diff --git a/arch/x86/kernel/panic.c b/arch/x86/kernel/panic.c
new file mode 100644
index 000000000000..0838bb7cf9a9
--- /dev/null
+++ b/arch/x86/kernel/panic.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+// Author Carlos Bilbao <carlos.bilbao@kernel.org>
+#include <linux/kernel.h>
+#include <asm/processor.h>
+
+void cpu_halt_after_panic(void)
+{
+ safe_halt();
+}
--
2.47.1