Re: [PATCH 0/5] x86-64: Remove syscall instructions at fixedaddresses

[Ingo Molnar]

* Andrew Lutomirski <luto@xxxxxxx> wrote:

> [...] More importantly, vread_tsc contains an alternative and the 
> vDSO can't currently contain alternative instructions.  That can 
> probably be fixed, but it'll take a bit of work.

You could start with picking the more compatible alternative 
instruction initially. I don't at all mind losing half a cycle of 
performance in that case ... this code should be secure first.

Thanks,

	Ingo
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