Date: Mon, 13 Dec 1999 09:19:16 +0100 From: Martin Cracauer <cracauer@cons.org> To: arch@freebsd.org Subject: Re: Concrete plans for ucontext/mcontext changes around 4.0 Message-ID: <19991213091915.D13197@cons.org> In-Reply-To: <19991212172602.A10611@cons.org>; from Martin Cracauer on Sun, Dec 12, 1999 at 05:26:02PM %2B0100 References: <19991212172602.A10611@cons.org>
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First correction: > - Add one int member to use as 32 bitwise booleans to indicate what > the SSE/additional space is used for in this signal invocation. FPU > state will unconditionally be there. Forgot about lazy FPU context switching (should have finished reading my mailbox). FPU context is not always there. The Linux people claim that lazy FPU switching is not worth the effort anymore on modern machines. I didn't see any proof or numbers. Anyone of you? Martin -- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Martin Cracauer <cracauer@cons.org> http://www.cons.org/cracauer/ Tel.: (private) +4940 5221829 Fax.: (private) +4940 5228536 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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