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| author | Ingo Molnar <mingo@elte.hu> | 2009-02-20 23:32:28 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-21 00:09:44 +0100 |
| commit | d951734654f76a370a89b4e531af9b765bd13541 (patch) | |
| tree | fff6f0097d2ddd5b8f533f5e48a7978a5f9c5257 /arch/x86 | |
| parent | c3731c68668325abddee8665018c74c7156a57be (diff) | |
| download | op-kernel-dev-d951734654f76a370a89b4e531af9b765bd13541.zip op-kernel-dev-d951734654f76a370a89b4e531af9b765bd13541.tar.gz | |
x86, mm: rename TASK_SIZE64 => TASK_SIZE_MAX
Impact: cleanup
Rename TASK_SIZE64 to TASK_SIZE_MAX, and provide the
define on 32-bit too. (mapped to TASK_SIZE)
This allows 32-bit code to make use of the (former-) TASK_SIZE64
symbol as well, in a clean way.
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 9 | ||||
| -rw-r--r-- | arch/x86/kernel/ptrace.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/fault.c | 2 | ||||
| -rw-r--r-- | arch/x86/vdso/vma.c | 4 |
4 files changed, 9 insertions, 8 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 72914d0..c7a98f7 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -861,6 +861,7 @@ static inline void spin_lock_prefetch(const void *x) * User space process size: 3GB (default). */ #define TASK_SIZE PAGE_OFFSET +#define TASK_SIZE_MAX TASK_SIZE #define STACK_TOP TASK_SIZE #define STACK_TOP_MAX STACK_TOP @@ -920,7 +921,7 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk); /* * User space process size. 47bits minus one guard page. */ -#define TASK_SIZE64 ((1UL << 47) - PAGE_SIZE) +#define TASK_SIZE_MAX ((1UL << 47) - PAGE_SIZE) /* This decides where the kernel will search for a free chunk of vm * space during mmap's. @@ -929,12 +930,12 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk); 0xc0000000 : 0xFFFFe000) #define TASK_SIZE (test_thread_flag(TIF_IA32) ? \ - IA32_PAGE_OFFSET : TASK_SIZE64) + IA32_PAGE_OFFSET : TASK_SIZE_MAX) #define TASK_SIZE_OF(child) ((test_tsk_thread_flag(child, TIF_IA32)) ? \ - IA32_PAGE_OFFSET : TASK_SIZE64) + IA32_PAGE_OFFSET : TASK_SIZE_MAX) #define STACK_TOP TASK_SIZE -#define STACK_TOP_MAX TASK_SIZE64 +#define STACK_TOP_MAX TASK_SIZE_MAX #define INIT_THREAD { \ .sp0 = (unsigned long)&init_stack + sizeof(init_stack) \ diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c index d2f7cd5..fb2159a 100644 --- a/arch/x86/kernel/ptrace.c +++ b/arch/x86/kernel/ptrace.c @@ -268,7 +268,7 @@ static unsigned long debugreg_addr_limit(struct task_struct *task) if (test_tsk_thread_flag(task, TIF_IA32)) return IA32_PAGE_OFFSET - 3; #endif - return TASK_SIZE64 - 7; + return TASK_SIZE_MAX - 7; } #endif /* CONFIG_X86_32 */ diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 9c2dc5d..6fa9f17 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -963,7 +963,7 @@ static int fault_in_kernel_space(unsigned long address) #ifdef CONFIG_X86_32 return address >= TASK_SIZE; #else - return address >= TASK_SIZE64; + return address >= TASK_SIZE_MAX; #endif } diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c index 9c98cc6..7133cdf 100644 --- a/arch/x86/vdso/vma.c +++ b/arch/x86/vdso/vma.c @@ -85,8 +85,8 @@ static unsigned long vdso_addr(unsigned long start, unsigned len) unsigned long addr, end; unsigned offset; end = (start + PMD_SIZE - 1) & PMD_MASK; - if (end >= TASK_SIZE64) - end = TASK_SIZE64; + if (end >= TASK_SIZE_MAX) + end = TASK_SIZE_MAX; end -= len; /* This loses some more bits than a modulo, but is cheaper */ offset = get_random_int() & (PTRS_PER_PTE - 1); |
