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From: Gabriel C <nix.or.die@googlemail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [git pull] x86 PAT changes
Date: Sat, 26 Apr 2008 15:40:22 +0200	[thread overview]
Message-ID: <481330C6.7040109@googlemail.com> (raw)
In-Reply-To: <20080424225625.GB8717@elte.hu>

Ingo Molnar wrote:
> Linus, please pull the x86-pat git tree from:
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-pat.git for-linus
> 
> this adds the second (and final) phase of the x86 PAT changes. Due to 
> generic impact (the drivers/char/mem.c and include/asm-generic/iomap.h 
> changes) this is offered as a separate tree.
> 
> The new CONFIG_NONPROMISC_DEVMEM defaults to disabled so PAT will be 
> disabled, to stay compatible and to be a bit cautious/gradual.
> 

Hi Ingo,

When using an 64bit ( didn't got time to test 32bit now ) kernel[1] with PAT enabled , kvm-intel
does not work anymore. 

When modprobing kvm-intel , kvm is saying VT extension is disable by BIOS which isn't true.
When disabling PAT again ( no changes to BIOS ) kvm-intel works again here.

Is that an known problem ?

If you need more infos just let me know.

Gabriel

[1]  2.6.25-05096-gb1721d0-dirty
     with following patches :
     http://lkml.org/lkml/2008/4/26/37
     http://lkml.org/lkml/2008/4/26/24
     http://lkml.org/lkml/2008/4/25/107



  parent reply	other threads:[~2008-04-26 13:40 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-24 22:56 [git pull] x86 PAT changes Ingo Molnar
2008-04-25 23:43 ` Linus Torvalds
2008-04-26  0:06   ` H. Peter Anvin
2008-04-26  1:12     ` Linus Torvalds
2008-04-26  8:56       ` Ingo Molnar
2008-04-26 16:54         ` Pallipadi, Venkatesh
2008-04-26 17:15           ` Linus Torvalds
2008-04-26 18:32             ` Venki Pallipadi
2008-04-26 19:07               ` [patch] x86, PAT: disable /dev/mem mmap RAM with PAT Ingo Molnar
2008-04-26  9:57   ` [git pull] x86 PAT changes Ingo Molnar
2008-04-26 13:40 ` Gabriel C [this message]
2008-04-26 14:42   ` Ingo Molnar
2008-04-26 15:37     ` Gabriel C
2008-04-26 15:41       ` Ingo Molnar
2008-04-26 16:43         ` Linus Torvalds

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