From: Rob Herring <robh@kernel.org>
To: Robin Murphy <robin.murphy@arm.com>
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Joerg Roedel <joro@8bytes.org>,
Steven Price <steven.price@arm.com>,
Linux IOMMU <iommu@lists.linux-foundation.org>,
Will Deacon <will@kernel.org>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v2 1/3] iommu/io-pgtable-arm: Correct Mali attributes
Date: Mon, 30 Sep 2019 13:35:41 -0500 [thread overview]
Message-ID: <CAL_JsqLDetEBhP71k1TmJN_eCBRRamwLcCwREBWJ+sPs=aA2xw@mail.gmail.com> (raw)
In-Reply-To: <fc6ce3e89ae85c9010b25b9303589be944ba3811.1569851517.git.robin.murphy@arm.com>
On Mon, Sep 30, 2019 at 9:11 AM Robin Murphy <robin.murphy@arm.com> wrote:
>
> Whilst Midgard's MEMATTR follows a similar principle to the VMSA MAIR,
> the actual attribute values differ, so although it currently appears to
> work to some degree, we probably shouldn't be using our standard stage 1
> MAIR for that. Instead, generate a reasonable MEMATTR with attribute
> values borrowed from the kbase driver; at this point we'll be overriding
> or ignoring pretty much all of the LPAE config, so just implement these
> Mali details in a dedicated allocator instead of pretending to subclass
> the standard VMSA format.
>
> Fixes: d08d42de6432 ("iommu: io-pgtable: Add ARM Mali midgard MMU page table format")
> Tested-by: Neil Armstrong <narmstrong@baylibre.com>
> Reviewed-by: Steven Price <steven.price@arm.com>
> Signed-off-by: Robin Murphy <robin.murphy@arm.com>
> ---
> drivers/iommu/io-pgtable-arm.c | 53 +++++++++++++++++++++++++---------
> 1 file changed, 40 insertions(+), 13 deletions(-)
Reviewed-by: Rob Herring <robh@kernel.org>
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next prev parent reply other threads:[~2019-09-30 18:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-30 14:10 [PATCH v2 0/3] iommu/io-pgtable-arm: Mali LPAE improvements Robin Murphy
2019-09-30 14:11 ` [PATCH v2 1/3] iommu/io-pgtable-arm: Correct Mali attributes Robin Murphy
2019-09-30 18:35 ` Rob Herring [this message]
2019-09-30 14:11 ` [PATCH v2 2/3] iommu/io-pgtable-arm: Support all Mali configurations Robin Murphy
2019-09-30 18:36 ` Rob Herring
2019-09-30 14:11 ` [PATCH v2 3/3] iommu/io-pgtable-arm: Allow coherent walks for Mali Robin Murphy
2019-09-30 18:36 ` Rob Herring
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