kexec-tools/kexec-Add-quick-kexec-support.patch

From e841cb419d74adbda7116a6b11b5fcaeba0dc274 Mon Sep 17 00:00:00 2001
From: root <root@localhost.localdomain>
Date: Sat, 25 Dec 2021 17:42:47 +0800
Subject: [PATCH] fix

---
 kexec/kexec-syscall.h |  1 +
 kexec/kexec.c         | 10 ++++++++++
 kexec/kexec.h         |  4 +++-
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/kexec/kexec-syscall.h b/kexec/kexec-syscall.h
index bea29d4..6eea272 100644
--- a/kexec/kexec-syscall.h
+++ b/kexec/kexec-syscall.h
@@ -109,6 +109,7 @@ static inline long kexec_file_load(int kernel_fd, int initrd_fd,
 
 #define KEXEC_ON_CRASH		0x00000001
 #define KEXEC_PRESERVE_CONTEXT	0x00000002
+#define KEXEC_QUICK		0x00000004
 #define KEXEC_ARCH_MASK		0xffff0000
 
 /* Flags for kexec file based system call */
diff --git a/kexec/kexec.c b/kexec/kexec.c
index f63b36b..5b8beca 100644
--- a/kexec/kexec.c
+++ b/kexec/kexec.c
@@ -1009,6 +1009,7 @@ void usage(void)
 	       " -l, --load           Load the new kernel into the\n"
 	       "                      current kernel.\n"
 	       " -p, --load-panic     Load the new kernel for use on panic.\n"
+	       " -q, --load-quick     Load the new kernel to quick kexec\n"
 	       " -u, --unload         Unload the current kexec target kernel.\n"
 	       "                      If capture kernel is being unloaded\n"
 	       "                      specify -p with -u.\n"
@@ -1340,6 +1341,7 @@ int main(int argc, char *argv[])
 	int has_opt_load = 0;
 	int do_load = 1;
 	int do_exec = 0;
+	int do_quick = 0;
 	int do_load_jump_back_helper = 0;
 	int do_shutdown = 1;
 	int do_sync = 1, skip_sync = 0;
@@ -1460,6 +1462,14 @@ int main(int argc, char *argv[])
 			kexec_file_flags |= KEXEC_FILE_ON_CRASH;
 			kexec_flags = KEXEC_ON_CRASH;
 			break;
+		case OPT_QUICK:
+			do_load = 1;
+			do_exec = 0;
+			do_shutdown = 0;
+			do_quick = 1;
+			kexec_flags = KEXEC_QUICK;
+			skip_checks = 1;
+			break;
 		case OPT_MEM_MIN:
 			mem_min = strtoul(optarg, &endptr, 0);
 			if (*endptr) {
diff --git a/kexec/kexec.h b/kexec/kexec.h
index 595dd68..9cbc77f 100644
--- a/kexec/kexec.h
+++ b/kexec/kexec.h
@@ -218,6 +218,7 @@ extern int file_types;
 #define OPT_UNLOAD		'u'
 #define OPT_TYPE		't'
 #define OPT_PANIC		'p'
+#define OPT_QUICK		'q'
 #define OPT_KEXEC_FILE_SYSCALL	's'
 #define OPT_KEXEC_SYSCALL	'c'
 #define OPT_KEXEC_SYSCALL_AUTO	'a'
@@ -249,6 +250,7 @@ extern int file_types;
 	{ "entry",		1, 0, OPT_ENTRY }, \
 	{ "type",		1, 0, OPT_TYPE }, \
 	{ "load-panic",         0, 0, OPT_PANIC }, \
+	{ "load-quick",         0, 0, OPT_QUICK }, \
 	{ "mem-min",		1, 0, OPT_MEM_MIN }, \
 	{ "mem-max",		1, 0, OPT_MEM_MAX }, \
 	{ "reuseinitrd",	0, 0, OPT_REUSE_INITRD }, \
@@ -259,7 +261,7 @@ extern int file_types;
 	{ "status",		0, 0, OPT_STATUS }, \
 	{ "print-ckr-size",     0, 0, OPT_PRINT_CKR_SIZE }, \
 
-#define KEXEC_OPT_STR "h?vdfixyluet:pscaS"
+#define KEXEC_OPT_STR "h?vdfixyluet:pqscaS"
 
 extern void dbgprint_mem_range(const char *prefix, struct memory_range *mr, int nr_mr);
 extern void die(const char *fmt, ...)
-- 
2.30.0