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| author |   Brian Gerst <brgerst@gmail.com> | 2009-02-10 09:51:46 -0500 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-02-11 12:40:45 +0100 |
| commit | 253f29a4ae9cc6cdc7b94f96517f27a93885a6ce (patch) | |
| tree | 09942e565938a6bac216b1725ccf607e01d09b20 /arch/x86/kernel/ioport.c | |
| parent | x86: use pt_regs pointer in do_device_not_available() (diff) | |
| download | linux-dev-253f29a4ae9cc6cdc7b94f96517f27a93885a6ce.tar.xz linux-dev-253f29a4ae9cc6cdc7b94f96517f27a93885a6ce.zip | |
x86: pass in pt_regs pointer for syscalls that need it
Some syscalls need to access the pt_regs structure, either to copy
user register state or to modifiy it. This patch adds stubs to load
the address of the pt_regs struct into the %eax register, and changes
the syscalls to regparm(1) to receive the pt_regs pointer as the
first argument.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/ioport.c')
| -rw-r--r-- | arch/x86/kernel/ioport.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c index b12208f4dfee..7ec148646312 100644 --- a/arch/x86/kernel/ioport.c +++ b/arch/x86/kernel/ioport.c @@ -131,10 +131,8 @@ static int do_iopl(unsigned int level, struct pt_regs *regs) } #ifdef CONFIG_X86_32 -asmlinkage long sys_iopl(unsigned long regsp) +ptregscall long sys_iopl(struct pt_regs *regs, unsigned int level) { - struct pt_regs *regs = (struct pt_regs *)®sp; - unsigned int level = regs->bx; struct thread_struct *t = ¤t->thread; int rc; |