Re: [Xen-devel] [PATCH 2/2] x86/ldt: allow to disable modify_ldt at runtime

[Borislav Petkov <bp@xxxxxxxxx>]

On Mon, Aug 03, 2015 at 11:45:24AM -0700, Andy Lutomirski wrote:
> P.P.P.S.  Who thought that IRET faults unmasking NMIs made any sense
> whatsoever when NMIs run on an IST stack?  Seriously, people?

What happened with asking Intel for a sane IRET-NG?

Should be relatively easy - take the current IRET microcode, get rid
of the nasty crap, allocate a new opcode and done. Validation should
actually have *less* to do and can reuse all current test cases.

:-)

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
--

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