linux-kernel - Re: [PATCH v6 01/12] iommu: Change type of pasid to u32

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Date:   Wed, 22 Jul 2020 10:21:21 -0700
From:   Fenghua Yu <fenghua.yu@...el.com>
To:     Joerg Roedel <joro@...tes.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <peterz@...radead.org>,
        H Peter Anvin <hpa@...or.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Felix Kuehling <Felix.Kuehling@....com>,
        Dave Hansen <dave.hansen@...el.com>,
        Tony Luck <tony.luck@...el.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Christoph Hellwig <hch@...radead.org>,
        Ashok Raj <ashok.raj@...el.com>,
        Jacob Jun Pan <jacob.jun.pan@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Sohil Mehta <sohil.mehta@...el.com>,
        Ravi V Shankar <ravi.v.shankar@...el.com>,
        Bruce Schlobohm <bruce.schlobohm@...el.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        x86 <x86@...nel.org>, iommu@...ts.linux-foundation.org,
        amd-gfx <amd-gfx@...ts.freedesktop.org>
Subject: Re: [PATCH v6 01/12] iommu: Change type of pasid to u32

Hi, Joerg,

On Wed, Jul 22, 2020 at 04:03:40PM +0200, Joerg Roedel wrote:
> On Mon, Jul 13, 2020 at 04:47:56PM -0700, Fenghua Yu wrote:
> > PASID is defined as a few different types in iommu including "int",
> > "u32", and "unsigned int". To be consistent and to match with uapi
> > definitions, define PASID and its variations (e.g. max PASID) as "u32".
> > "u32" is also shorter and a little more explicit than "unsigned int".
> > 
> > No PASID type change in uapi although it defines PASID as __u64 in
> > some places.
> > 
> > Suggested-by: Thomas Gleixner <tglx@...utronix.de>
> > Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
> > Reviewed-by: Tony Luck <tony.luck@...el.com>
> > Reviewed-by: Lu Baolu <baolu.lu@...ux.intel.com>
> > Acked-by: Felix Kuehling <Felix.Kuehling@....com>
> 
> For the IOMMU parts:
> 
> Acked-by: Joerg Roedel <jroedel@...e.de>

Thank you!

-Fenghua