x86/kexec: Add CONFIG_KEXEC_DEBUG option

This does nothing yet.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>

diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 74777a97e394aacfe11b824225df77bedf734734..9dde32865a9b2a95bd2ceac1dc806486780be2a7 100644 (file)
--- 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