linux-kernel - RE: [tip:x86/smap] x86-32: Start out eflags and cr4 clean

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <SNT002-W1128F6F94A63B050C01347BC3590@phx.gbl>
Date:	Fri, 23 Nov 2012 19:49:29 -0800
From:	Yuhong Bao <yuhongbao_386@...mail.com>
To:	"mingo@...nel.org" <mingo@...nel.org>,
	"linux-tip-commits@...r.kernel.org" 
	<linux-tip-commits@...r.kernel.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"hpa@...or.com" <hpa@...or.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>
Subject: RE: [tip:x86/smap] x86-32: Start out eflags and cr4 clean

> + * Specifically, cr4 exists if and only if CPUID exists,
> + * which in turn exists if and only if EFLAGS.ID exists.
This may be true for *Intel* 486 CPUs as VME was implemented at the same time as CPUID, but I am not sure that it is true for AMD 486 CPUs.

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