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authorBrian Gerst <brgerst@gmail.com>2009-02-10 09:51:46 -0500
committerIngo Molnar <mingo@elte.hu>2009-02-11 12:40:45 +0100
commit253f29a4ae9cc6cdc7b94f96517f27a93885a6ce (patch)
tree09942e565938a6bac216b1725ccf607e01d09b20 /arch/x86/kernel/ioport.c
parentaa78bcfa01dec3cdbde3cda098ce32abbd9c3bf6 (diff)
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.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c
index b12208f4dfe..7ec14864631 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 *)&regsp;
- unsigned int level = regs->bx;
struct thread_struct *t = &current->thread;
int rc;