linux-kernel - Re: [PATCH 1/2] [for 3.4] drivers/virt: the Freescale hypervisor driver doesn't need to check MSR[GS]

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Date:	Sun, 25 Nov 2012 07:07:31 -0600
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Timur Tabi <timur@...escale.com>
Cc:	<linuxppc-dev@...ux.freescale.net>,
	Scott Wood <scottwood@...escale.com>,
	Anatolij Gustschin <agust@...x.de>, <geert@...ux-m68k.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] [for 3.4] drivers/virt: the Freescale hypervisor driver doesn't need to check MSR[GS]


On May 17, 2012, at 2:10 PM, Timur Tabi wrote:

> The MSR[GS] bit indicates whether the kernel is running in processor guest
> state mode, but such a check is unnecessary.  The driver already checks
> for the /hypervisor node and the fsl,hv-version property, so it already
> knows that it's running under the Freescale hypervisor.
> 
> There is nothing in the driver that inherently requires guest state,
> anyway.
> 
> This fixes a break that can occur in some randconfig builds.
> 
> Signed-off-by: Timur Tabi <timur@...escale.com>
> ---
> drivers/virt/fsl_hypervisor.c |    3 ---
> 1 files changed, 0 insertions(+), 3 deletions(-)

applied to next

- k
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