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Re: init receiving SIGILL on XEN3_DOM0/amd64
Manuel Bouyer wrote:
On Sun, May 18, 2008 at 01:43:04PM +0200, Christoph Egger wrote:
When the CPU sends an illegal intruction trap, I guess.
In that case, I have a wild guess:
sysenter is an illegal opcode on amd64. The difference is, AMD CPUs
throw an exception, Intel CPUs don't.
Is sysenter used somewhere?
I don't think it should be for amd64 binaries.
i386 binaries may, but only if I686_LIBC is defined.
No, sysenter is legacy mode only. sysenter is also an illegal opcode
in compat long mode.
> Otherwise int $0x80 is used.
That is slow.
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