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From: Robin Murphy <robin.murphy@arm.com>
To: Will Deacon <will@kernel.org>, Neil Armstrong <narmstrong@baylibre.com>
Cc: robh@kernel.org, tomeu.vizoso@collabora.com,
	steven.price@arm.com, iommu@lists.linux-foundation.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 0/3] iommu/io-pgtable-arm: Mali LPAE improvements
Date: Wed, 11 Sep 2019 18:19:40 +0100
Message-ID: <83c45e97-8398-349d-5593-03af23b39c59@arm.com> (raw)
In-Reply-To: <20190911162024.i2sda7uzy3pbrnyd@willie-the-truck>

On 2019-09-11 5:20 pm, Will Deacon wrote:
> On Wed, Sep 11, 2019 at 06:19:04PM +0200, Neil Armstrong wrote:
>> On 11/09/2019 16:42, Robin Murphy wrote:
>>> Here's the eagerly-awaited fix to unblock T720/T820, plus a couple of
>>> other bits that I've collected so far. I'm not considering this as
>>> 5.3 fixes material, but it would be nice if there's any chance still
>>> to sneak it into 5.4.
>>>
>>> Robin.
>>>
>>>
>>> Robin Murphy (3):
>>>    iommu/io-pgtable-arm: Correct Mali attributes
>>>    iommu/io-pgtable-arm: Support more Mali configurations
>>>    iommu/io-pgtable-arm: Allow coherent walks for Mali
>>>
>>>   drivers/iommu/io-pgtable-arm.c | 61 ++++++++++++++++++++++++++--------
>>>   1 file changed, 48 insertions(+), 13 deletions(-)
>>>
>>
>> Tested-by: Neil Armstrong <narmstrong@baylibre.com>
>>
>> On Khadas VIM2 (Amlogic S912) with T820 Mali GPU
>>
>> I hope this will be part of v5.4 so we can run panfrost on vanilla v5.4 !
> 
> Not a chance -- the merge window opens on Monday and -next isn't being
> rolled out at the moment due to LPC. Let's shoot for 5.5 and get this
> queued up in a few weeks.

Fair enough, that was certainly more extreme optimism than realistic 
expectation on my part :)

There is some argument for taking #1 and #2 as 5.4 fixes, though - the 
upcoming Mesa 19.2 release will enable T820 support on the userspace 
side - so let's pick that discussion up again in a few weeks.

Robin.

(And at worst, I guess we could carry the "cfg.ias = 48" workaround in 
the DRM driver for the 5.4 cycle if need be)
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Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-11 14:42 Robin Murphy
2019-09-11 14:42 ` [PATCH 1/3] iommu/io-pgtable-arm: Correct Mali attributes Robin Murphy
2019-09-12 10:41   ` Steven Price
2019-09-11 14:42 ` [PATCH 2/3] iommu/io-pgtable-arm: Support more Mali configurations Robin Murphy
2019-09-12 10:47   ` Steven Price
2019-09-11 14:42 ` [PATCH 3/3] iommu/io-pgtable-arm: Allow coherent walks for Mali Robin Murphy
2019-09-12 10:53   ` Steven Price
2019-09-11 16:19 ` [PATCH 0/3] iommu/io-pgtable-arm: Mali LPAE improvements Neil Armstrong
2019-09-11 16:20   ` Will Deacon
2019-09-11 17:19     ` Robin Murphy [this message]
2019-09-19  8:30       ` Will Deacon

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