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| author | Jeff Dike <jdike@addtoit.com> | 2007-10-16 01:26:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:43:04 -0700 |
| commit | 5c8aaceab88ac787c0a4038b29143c954c2a45e0 (patch) | |
| tree | 9277518e77cac9e1f97d826fa8962d1c861a9e40 /arch/um/kernel/init_task.c | |
| parent | 8d82076080d909f18dea859a6767df7e3ff69241 (diff) | |
| download | op-kernel-dev-5c8aaceab88ac787c0a4038b29143c954c2a45e0.zip op-kernel-dev-5c8aaceab88ac787c0a4038b29143c954c2a45e0.tar.gz | |
uml: stop specially protecting kernel stacks
Map all of physical memory as executable to avoid having to change stack
protections during fork and exit.
unprotect_stack is now called only from MODE_TT code, so it is marked as such.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/kernel/init_task.c')
| -rw-r--r-- | arch/um/kernel/init_task.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/um/kernel/init_task.c b/arch/um/kernel/init_task.c index cba516e..fa90db9 100644 --- a/arch/um/kernel/init_task.c +++ b/arch/um/kernel/init_task.c @@ -47,7 +47,9 @@ union thread_union cpu0_irqstack __attribute__((__section__(".data.init_irqstack"))) = { INIT_THREAD_INFO(init_task) }; +#ifdef CONFIG_MODE_TT void unprotect_stack(unsigned long stack) { os_protect_memory((void *) stack, THREAD_SIZE, 1, 1, 0); } +#endif |
