From 9d9cf8de8b2ad8273861a30476a46f34cd34871a Mon Sep 17 00:00:00 2001

From: Baoquan He <bhe@redhat.com>

Date: Tue, 14 Nov 2023 23:20:30 +0800

Subject: [PATCH] kexec_file: add kexec_file flag to support debug printing

Content-type: text/plain

This add KEXEC_FILE_DEBUG to kexec_file_flags so that it can be passed

to kernel when '-d' is added with kexec_file_load interface. With that

flag enabled, kernel can enable the debugging message printing.

Signed-off-by: Baoquan He <bhe@redhat.com>

Signed-off-by: Simon Horman <horms@kernel.org>

---

 kexec/kexec-syscall.h | 1 +

 kexec/kexec.c         | 1 +

 2 files changed, 2 insertions(+)

diff --git a/kexec/kexec-syscall.h b/kexec/kexec-syscall.h

index 2559bffb93da..73e52543e1b0 100644

--- a/kexec/kexec-syscall.h

+++ b/kexec/kexec-syscall.h

@@ -119,6 +119,7 @@ static inline long kexec_file_load(int kernel_fd, int initrd_fd,

 #define KEXEC_FILE_UNLOAD	0x00000001

 #define KEXEC_FILE_ON_CRASH	0x00000002

 #define KEXEC_FILE_NO_INITRAMFS	0x00000004

+#define KEXEC_FILE_DEBUG	0x00000008

 /* These values match the ELF architecture values. 

  * Unless there is a good reason that should continue to be the case.

diff --git a/kexec/kexec.c b/kexec/kexec.c

index 9d0ec46e5657..222f79e3112e 100644

--- a/kexec/kexec.c

+++ b/kexec/kexec.c

@@ -1477,6 +1477,7 @@ int main(int argc, char *argv[])

 			return 0;

 		case OPT_DEBUG:

 			kexec_debug = 1;

+			kexec_file_flags |= KEXEC_FILE_DEBUG;

 			break;

 		case OPT_NOIFDOWN:

 			skip_ifdown = 1;

-- 

2.41.0