linux-kernel - Re: [PATCH 1/3] iommu/fsl: Fix PAMU window size check.

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Date:	Wed, 2 Jul 2014 02:46:01 -0500
From:	Emil Medve <Emilian.Medve@...escale.com>
To:	Varun Sethi <Varun.Sethi@...escale.com>,
	<iommu@...ts.linux-foundation.org>, <joro@...tes.org>,
	<linux-kernel@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>,
	<alex.williamson@...hat.com>
Subject: Re: [PATCH 1/3] iommu/fsl: Fix PAMU window size check.

On 06/24/2014 08:57 AM, Varun Sethi wrote:
> is_power_of_2 requires an unsigned long parameter which would
> lead to truncation of 64 bit values on 32 bit architectures.
> 
> __ffs also expects an unsigned long parameter thus won't work
> for 64 bit values on 32 bit architectures.
> 
> Signed-off-by: Varun Sethi <Varun.Sethi@...escale.com>
> ---
>  drivers/iommu/fsl_pamu.c        |    8 ++++----
>  drivers/iommu/fsl_pamu_domain.c |    2 +-
>  2 files changed, 5 insertions(+), 5 deletions(-)

Tested-by: Emil Medve <Emilian.Medve@...escale.com>

On a P4080 DS (i.e. 32-bit SoC)


Cheers,
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