Messages in this thread |  | | | Date | Thu, 12 Feb 2009 00:14:42 +0900 | | From | Tejun Heo <> | | Subject | Re: [PATCH 2/3] x86: Pass in pt_regs pointer for syscalls that need it |
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Brian Gerst wrote: > x86-64 doesn't have the tail-call problem because it doesn't use the > pt_regs on stack trick for syscall args. All the args are passed in > registers.
Yeah, I was saying that we can do about the same thing on x86_32 by passing in pointer to pt_regs and defining proper syscall wrappers. It will cost a bit of performance by increasing register pressure tho.
-- tejun
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