Commit-ID: 7389882c81474d635a208726edb22938645ff9ad
Gitweb: http://git.kernel.org/tip/7389882c81474d635a208726edb22938645ff9ad
Author: WANG Chao <chaowang@xxxxxxxxxx>
AuthorDate: Wed, 7 Jan 2015 18:55:48 +0800
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Fri, 23 Jan 2015 16:14:26 +0100
x86, setup: Let early_memremap() handle page alignment
early_memremap() takes care of page alignment and map size, so we can
just remap the required data size and get rid of the adjustments in
the setup code.
[tglx: Massaged changelog ]
Signed-off-by: WANG Chao <chaowang@xxxxxxxxxx>
Cc: Matt Fleming <matt.fleming@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
Cc: Bryan O'Donoghue <pure.logic@xxxxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1420628150-16872-1-git-send-email-chaowang@xxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/x86/kernel/setup.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index ab4734e..c4648ada 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -431,15 +431,13 @@ static void __init parse_setup_data(void)
pa_data = boot_params.hdr.setup_data;
while (pa_data) {
- u32 data_len, map_len, data_type;
+ u32 data_len, data_type;
- map_len = max(PAGE_SIZE - (pa_data & ~PAGE_MASK),
- (u64)sizeof(struct setup_data));
- data = early_memremap(pa_data, map_len);
+ data = early_memremap(pa_data, sizeof(*data));
data_len = data->len + sizeof(struct setup_data);
data_type = data->type;
pa_next = data->next;
- early_iounmap(data, map_len);
+ early_iounmap(data, sizeof(*data));
switch (data_type) {
case SETUP_E820_EXT:
--
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