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SubjectRe: Various x86 syscall mechanisms
Date
> > [...] "int $0x80" for 32-bit
> > syscalls made from 64-bit tasks on CONFIG_IA32_EMULATION kernels (intended
> > for valgrind).
>
> Hm, I think that's a post-facto rationalization.

It was my recollection of something Andi had said about why it was there.
My recollections are not a reliable source of accurate information.

> Thanks for the clarifying overview. I've been piecing my understanding
> together as I've been getting 64-bit pvops Xen working, and trying to
> fit what it has to do to implement all these instructions and mode
> combinations, and it looks like I'm about right.

I'm always glad to help.


Thanks,
Roland


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