linux-kernel - Re: [PATCH v7 11/19] iommu/arm-smmu: Implement reserved region get/put callbacks

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Date:   Tue, 10 Jan 2017 14:16:52 +0000
From:   Will Deacon <will.deacon@....com>
To:     Eric Auger <eric.auger@...hat.com>
Cc:     eric.auger.pro@...il.com, christoffer.dall@...aro.org,
        marc.zyngier@....com, robin.murphy@....com,
        alex.williamson@...hat.com, joro@...tes.org, tglx@...utronix.de,
        jason@...edaemon.net, linux-arm-kernel@...ts.infradead.org,
        kvm@...r.kernel.org, drjones@...hat.com,
        linux-kernel@...r.kernel.org, pranav.sawargaonkar@...il.com,
        iommu@...ts.linux-foundation.org, punit.agrawal@....com,
        diana.craciun@....com, gpkulkarni@...il.com,
        shankerd@...eaurora.org, bharat.bhushan@....com,
        geethasowjanya.akula@...il.com
Subject: Re: [PATCH v7 11/19] iommu/arm-smmu: Implement reserved region
 get/put callbacks

On Mon, Jan 09, 2017 at 01:46:02PM +0000, Eric Auger wrote:
> The get() populates the list with the MSI IOVA reserved window.
> 
> At the moment an arbitray MSI IOVA window is set at 0x8000000
> of size 1MB. This will allow to report those info in iommu-group
> sysfs.
> 
> Signed-off-by: Eric Auger <eric.auger@...hat.com>
> 
> ---
> 
> v3 -> v4:
> - do not handle PCI host bridge windows anymore
> - encode prot
> 
> RFC v2 -> v3:
> - use existing get/put_resv_regions
> 
> RFC v1 -> v2:
> - use defines for MSI IOVA base and length
> ---
>  drivers/iommu/arm-smmu.c | 28 ++++++++++++++++++++++++++++
>  1 file changed, 28 insertions(+)

Acked-by: Will Deacon <will.deacon@....com>

Will