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From: Rudolf Marek <>
To: Mikael Pettersson <>
Cc: Jean Delvare <>,
	Andrew Morton <>,
	Alexey Dobriyan <>,
	Dave Jones <>,
Subject: Re: [PATCH 1/2] MSR: Add support for safe variants
Date: Wed, 28 Mar 2007 23:04:50 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Hello Mikael,

> Maybe I'm in the minority here, but I for one strongly believe
> that any attempt to access an MSR "which might not be there" is
> inherently wrong. It implies that your HW detection is incomplete,
> which in combination with MSR accesses means that you may end up
> accessing MSRs that aren't at all what you think they should be.

Well I have some info from Intel, but the register is simply not always there. 
So instead of oopsing kernel, handling the exception is much better.

For further details please check:

(last page) I may have more info in the future.

> Who supplies these imprecise MSR definitions anyway?

Yes Intel, please check the thread. Sometimes similar to catch 22 ;)


  reply	other threads:[~2007-03-28 21:05 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-03-26 11:57 Mikael Pettersson
2007-03-26 12:09 ` Jean Delvare
2007-03-28 21:04   ` Rudolf Marek [this message]
  -- strict thread matches above, loose matches on Subject: below --
2007-03-25 12:18 Jean Delvare
2007-03-25 22:22 ` Andrew Morton
2007-03-26 11:29   ` Jean Delvare
2007-03-26 11:55     ` Andrew Morton

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