linux-kernel - Re: [PATCH] x86_64,xen,espfix: Initialize espfix on secondary CPUs

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Message-ID: <53C54DDC.8060302@zytor.com>
Date:	Tue, 15 Jul 2014 08:50:52 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Andy Lutomirski <luto@...capital.net>
CC:	boris.ostrovsky@...cle.com, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH] x86_64,xen,espfix: Initialize espfix on secondary CPUs

On 07/15/2014 08:38 AM, Konrad Rzeszutek Wilk wrote:
> 
> I think just disallowing would be preferrable.
> 

So I have yet to hear anyone talk about what the Xen PV IRET does for
16-bit stack segments.  Can we get the answer for that, please?

	-hpa


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