linux-kernel - Re: Various x86 syscall mechanisms

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Message-ID: <87bq1uyjgi.fsf@basil.nowhere.org>
Date:	Sat, 21 Jun 2008 16:02:37 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Roland McGrath <roland@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Various x86 syscall mechanisms

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

> There is no reason we couldn't do syscall for 32-bit native, but the
> only processor that would benefit would be K7, and that's far enough

K6 actually. K7 has sysenter AFAIK. The K6 syscall was also slightly different
and would need special case code.

-Andi
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