linux-kernel - Re: [PATCH] rdmsr_on_cpu, wrmsr_on

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] [day] [month] [year] [list]

Date:	Thu, 18 Jan 2007 16:45:24 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Andi Kleen <ak@...e.de>
CC:	Alexey Dobriyan <adobriyan@...nvz.org>, akpm@...l.org,
	linux-kernel@...r.kernel.org, davej@...emonkey.org.uk,
	devel@...r.kernel.org
Subject: Re: [PATCH] rdmsr_on_cpu, wrmsr_on_cpu

Andi Kleen wrote:
> On Friday 19 January 2007 10:40, H. Peter Anvin wrote:
> 
>> It would, but rather than having the paravirtualization interfaces
>> duplicate out of control, we could/should implement the less generic
>> features in terms of the more generic, above the pvz layer.
> 
> I can't see any Hypervisors ever allowing those weird MSRs, so
> for paravirtualization it is probably better to just disable then.
> 

Don't assume they're going to be "weird."  Intel, in particular, is 
notorious in forgetting what they have already documented as architectural.

	-hpa
-
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/