From: Maxim Levitsky <maximlevitsky@gmail.com>
To: hasan@digitalpath.net
Cc: linux-kernel@vger.kernel.org
Subject: Re: Access MSR functions in userspace?
Date: Wed, 6 Feb 2008 06:00:35 +0200 [thread overview]
Message-ID: <200802060600.35498.maximlevitsky@gmail.com> (raw)
In-Reply-To: <3278.65.164.104.9.1202268587.squirrel@webmail.digitalpath.net>
On Wednesday, 6 February 2008 05:29:47 Hasan Rashid wrote:
> Is there a way to use RDMSR and WRMSR in userspace? I only need to write
> to one register, writing a module with a userspace piece to handle that
> seems like an over kill.
>
> TIA!
Fortunately linux have /dev/cpu/*/msr
Take look at $LINUX_SOURCES/arch/x86/kernel/msr.c to learn how to use it.
Best regards,
Maxim Levitsky
next prev parent reply other threads:[~2008-02-06 4:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-06 3:29 Access MSR functions in userspace? Hasan Rashid
2008-02-06 4:00 ` Maxim Levitsky [this message]
2008-02-06 5:59 ` H. Peter Anvin
[not found] <200802070037.m170b4Bb000579@terminus.zytor.com>
2008-02-07 0:48 ` H. Peter Anvin
[not found] <200802070059.m170xqHv008164@terminus.zytor.com>
2008-02-07 1:09 ` H. Peter Anvin
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