Messages in this thread | | | Date | Thu, 25 Sep 2008 11:29:58 -0700 | From | Hiroshi Shimamoto <> | Subject | Re: [RFC PATCH v2 -tip 0/4] x86: signal handler improvement |
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H. Peter Anvin wrote: > Hiroshi Shimamoto wrote: >> and errors in __put_user is stored to stack. >> At the end of function, all errors in stack are calculated. If access to user >> space is failed, %edx is set to -EFAULT in exception handler and stored to >> stack for later operation. >> It seems inefficient. >> > > This is a gcc failure, and should be reported to the gcc people.
Does this gcc failure mean unnecessary storing into stack?
thanks, Hiroshi Shimamoto
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