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

From: Borislav Petkov
Date: Mon Aug 03 2015 - 23:55:22 EST


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.
--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/