linux-kernel - Re: [PATCH] x86-64: espfix for 64-bit mode *PROTOTYPE*

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Message-ID: <87lhuw779x.fsf@wine.dyndns.org>
Date:	Wed, 23 Apr 2014 10:57:14 +0200
From:	Alexandre Julliard <julliard@...ehq.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Lutomirski <amluto@...il.com>,
	Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Alexander van Heukelum <heukelum@...tmail.fm>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	Arjan van de Ven <arjan.van.de.ven@...el.com>,
	Brian Gerst <brgerst@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] x86-64: espfix for 64-bit mode *PROTOTYPE*

"H. Peter Anvin" <hpa@...or.com> writes:

> Does anyone have any idea if there is a real use case for non-16-bit
> LDT segments used as the stack segment?  Does Wine use anything like
> that?

Wine uses them for DPMI support, though that would only get used when
vm86 mode is available.

-- 
Alexandre Julliard
julliard@...ehq.org
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