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uml: use UM_THREAD_SIZE in userspace code

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Now that we have UM_THREAD_SIZE, we can replace the calculations in
user-space code (an earlier patch took care of the kernel side of the
house).

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike 2007-05-10 22:22:31 -07:00 committed by Linus Torvalds
parent 57598fd7b3
commit e1a79c400a
2 changed files with 4 additions and 6 deletions
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3
arch/um/kernel/init_task.c
View File

@ -44,8 +44,7 @@ __attribute__((__section__(".data.init_task"))) =
void unprotect_stack(unsigned long stack)
{
os_protect_memory((void *) stack, (1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE,
1, 1, 0);
os_protect_memory((void *) stack, THREAD_SIZE, 1, 1, 0);
}
/*

7
arch/um/os-Linux/skas/process.c
View File

@ -490,8 +490,8 @@ void map_stub_pages(int fd, unsigned long code,
void new_thread(void *stack, jmp_buf *buf, void (*handler)(void))
{
(*buf)[0].JB_IP = (unsigned long) handler;
(*buf)[0].JB_SP = (unsigned long) stack +
(PAGE_SIZE << UML_CONFIG_KERNEL_STACK_ORDER) - sizeof(void *);
(*buf)[0].JB_SP = (unsigned long) stack + UM_THREAD_SIZE -
sizeof(void *);
}
#define INIT_JMP_NEW_THREAD 0
@ -533,8 +533,7 @@ int start_idle_thread(void *stack, jmp_buf *switch_buf)
case INIT_JMP_NEW_THREAD:
(*switch_buf)[0].JB_IP = (unsigned long) new_thread_handler;
(*switch_buf)[0].JB_SP = (unsigned long) stack +
(PAGE_SIZE << UML_CONFIG_KERNEL_STACK_ORDER) -
sizeof(void *);
UM_THREAD_SIZE - sizeof(void *);
break;
case INIT_JMP_CALLBACK:
(*cb_proc)(cb_arg);