diff options
| author | Yuntao Wang | 2023-12-12 23:05:06 +0800 |
|---|---|---|
| committer | Andrew Morton | 2023-12-20 15:02:58 -0800 |
| commit | 8474f82ade6f361169d85177b22279dcbe813219 (patch) | |
| tree | 19224ed99cd9ac48f3b44bbf4ca98d7a18b5beaa /arch/x86/kernel | |
| parent | db6b6fb70193f0defe4d5785e940156c06e9abbe (diff) | |
x86/kexec: simplify the logic of mem_region_callback()
The expression `mstart + resource_size(res) - 1` is actually equivalent to
`res->end`, simplify the logic of this function to improve readability.
Link: https://lkml.kernel.org/r/20231212150506.31711-1-ytcoode@gmail.com
Signed-off-by: Yuntao Wang <ytcoode@gmail.com>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Simon Horman <horms@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/machine_kexec_64.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c index 1a3e2c05a8a5..6f8df998890e 100644 --- a/arch/x86/kernel/machine_kexec_64.c +++ b/arch/x86/kernel/machine_kexec_64.c @@ -42,12 +42,9 @@ struct init_pgtable_data { static int mem_region_callback(struct resource *res, void *arg) { struct init_pgtable_data *data = arg; - unsigned long mstart, mend; - - mstart = res->start; - mend = mstart + resource_size(res) - 1; - return kernel_ident_mapping_init(data->info, data->level4p, mstart, mend); + return kernel_ident_mapping_init(data->info, data->level4p, + res->start, res->end); } static int |