Messages in this thread | | | Subject | Re: PATCH: (on Alpha) emulating missing instructions | Date | Sat, 16 Oct 1999 14:41:58 +0100 (BST) | From | Alan Cox <> |
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> Although I agree with Alan entirely for open-source code, we still have a > problem with binary-only products (such as Civilisation CTP). In such > situations emulation can be very useful (even if it's non-optimal).
Your vendor made a mistake. They shipped the wrong binary. They picked wrong compile options - but its a beta thats why you put betas out - to find bugs.
> Please let's not consider emulating in user land .. emulating in the kernel > is slow enough! ;)
This may be true for the Alpha cases because unlike FPU you probably don't get clusters of byte operations.
> BTW, for our alpha emulation patch, we were concerned about speed and not > security (woops) .. soon we'll post another patch to fix the security.
Which is a text book reason for putting emulation in user space.
Alan
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