[PATCH] x86/kexec: fix incorrect end address passed to kernel_ident_mapping_init()

[Yuntao Wang <ytcoode@gmail.com>]

kernel_ident_mapping_init() takes an exclusive memory range [pstart, pend)
where pend is not included in the range, while res represents an inclusive
memory range [start, end] where end is considered part of the range.

Therefore, passing res->end directly to kernel_ident_mapping_init() is
incorrect, the correct end address should be `res->end + 1`.

Signed-off-by: Yuntao Wang <ytcoode@gmail.com>
---
 arch/x86/kernel/machine_kexec_64.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index 6f8df998890e..bc0a5348b4a6 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -44,7 +44,7 @@ static int mem_region_callback(struct resource *res, void *arg)
 	struct init_pgtable_data *data = arg;
 
 	return kernel_ident_mapping_init(data->info, data->level4p,
-					 res->start, res->end);
+					 res->start, res->end + 1);
 }
 
 static int
-- 
2.43.0