diff options
| author |   Borislav Petkov <bp@suse.de> | 2016-11-24 22:05:50 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-11-25 07:11:29 +0100 |
| commit | 9b032d21f6482ee305dcdec418c15153614b1dcc (patch) | |
| tree | e494d9b449679cb63a11533aec9ed00a5d57eac8 | |
| parent | x86/dumpstack: Make stack name tags more comprehensible (diff) | |
| download | linux-dev-9b032d21f6482ee305dcdec418c15153614b1dcc.tar.xz linux-dev-9b032d21f6482ee305dcdec418c15153614b1dcc.zip | |
x86/boot/64: Use defines for page size
... instead of naked numbers like the rest of the asm does in this file.
No code changed:
# arch/x86/kernel/head_64.o:
text data bss dec hex filename
1124 290864 4096 296084 48494 head_64.o.before
1124 290864 4096 296084 48494 head_64.o.after
md5:
87086e202588939296f66e892414ffe2 head_64.o.before.asm
87086e202588939296f66e892414ffe2 head_64.o.after.asm
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20161124210550.15025-1-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | arch/x86/kernel/head_64.S | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index b07cd27e33a5..a15d381e6020 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -112,20 +112,20 @@ startup_64: movq %rdi, %rax shrq $PGDIR_SHIFT, %rax - leaq (4096 + _KERNPG_TABLE)(%rbx), %rdx + leaq (PAGE_SIZE + _KERNPG_TABLE)(%rbx), %rdx movq %rdx, 0(%rbx,%rax,8) movq %rdx, 8(%rbx,%rax,8) - addq $4096, %rdx + addq $PAGE_SIZE, %rdx movq %rdi, %rax shrq $PUD_SHIFT, %rax andl $(PTRS_PER_PUD-1), %eax - movq %rdx, 4096(%rbx,%rax,8) + movq %rdx, PAGE_SIZE(%rbx,%rax,8) incl %eax andl $(PTRS_PER_PUD-1), %eax - movq %rdx, 4096(%rbx,%rax,8) + movq %rdx, PAGE_SIZE(%rbx,%rax,8) - addq $8192, %rbx + addq $PAGE_SIZE * 2, %rbx movq %rdi, %rax shrq $PMD_SHIFT, %rdi addq $(__PAGE_KERNEL_LARGE_EXEC & ~_PAGE_GLOBAL), %rax |