Messages in this thread | | | From | Roland McGrath <> | Subject | Re: Various x86 syscall mechanisms | Date | Fri, 27 Jun 2008 14:52:48 -0700 (PDT) |
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> > [...] "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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