From d951734654f76a370a89b4e531af9b765bd13541 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Fri, 20 Feb 2009 23:32:28 +0100 Subject: [PATCH] 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 Signed-off-by: Ingo Molnar --- arch/x86/include/asm/processor.h | 9 +++++---- arch/x86/kernel/ptrace.c | 2 +- arch/x86/mm/fault.c | 2 +- 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 72914d0315e9..c7a98f738210 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 d2f7cd5b2c83..fb2159a5c817 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 9c2dc5d79531..6fa9f175cba3 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 9c98cc6ba978..7133cdf9098b 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); -- 2.20.1