[RFC PATCH v3 15/20] x86/kexec: Add CONFIG_KEXEC_DEBUG option

[David Woodhouse]

From: David Woodhouse <dwmw at amazon.co.uk>

This does nothing yet.

Signed-off-by: David Woodhouse <dwmw at amazon.co.uk>
---
 arch/x86/Kconfig.debug | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 74777a97e394..9dde32865a9b 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -56,6 +56,14 @@ config EARLY_PRINTK_USB_XDBC
 	  You should normally say N here, unless you want to debug early
 	  crashes or need a very simple printk logging facility.
 
+config KEXEC_DEBUG
+	bool "Debug kexec transition"
+	depends on KEXEC_CORE && EARLY_PRINTK
+	help
+	  Faults during kexec can be difficult to debug. This installs exception
+	  handlers and attempts to report faults through the same serial port as
+	  used for early_printk.
+
 config EFI_PGT_DUMP
 	bool "Dump the EFI pagetable"
 	depends on EFI
-- 
2.47.0