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uml: remove page_size()

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userspace code used to have to call the kernelspace function page_size() in
order to determine the value of the kernel's PAGE_SIZE.  Since this is now
available directly from kern_constants.h as UM_KERN_PAGE_SIZE, page_size() can
be deleted and calls changed to use the constant.

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
2007-05-06 14:51:22 -07:00
committed by Linus Torvalds
parent 6e21aec3fc
commit 1ffb9164f5
10 changed files with 25 additions and 24 deletions
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11
arch/um/os-Linux/util.c
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@@ -29,28 +29,29 @@
#include "uml-config.h"
#include "os.h"
#include "longjmp.h"
#include "kern_constants.h"
void stack_protections(unsigned long address)
{
int prot = PROT_READ | PROT_WRITE | PROT_EXEC;
if(mprotect((void *) address, page_size(), prot) < 0)
if(mprotect((void *) address, UM_KERN_PAGE_SIZE, prot) < 0)
panic("protecting stack failed, errno = %d", errno);
}
void task_protections(unsigned long address)
{
unsigned long guard = address + page_size();
unsigned long stack = guard + page_size();
unsigned long guard = address + UM_KERN_PAGE_SIZE;
unsigned long stack = guard + UM_KERN_PAGE_SIZE;
int prot = 0, pages;
#ifdef notdef
if(mprotect((void *) stack, page_size(), prot) < 0)
if(mprotect((void *) stack, UM_KERN_PAGE_SIZE, prot) < 0)
panic("protecting guard page failed, errno = %d", errno);
#endif
pages = (1 << UML_CONFIG_KERNEL_STACK_ORDER) - 2;
prot = PROT_READ | PROT_WRITE | PROT_EXEC;
if(mprotect((void *) stack, pages * page_size(), prot) < 0)
if(mprotect((void *) stack, pages * UM_KERN_PAGE_SIZE, prot) < 0)
panic("protecting stack failed, errno = %d", errno);
}