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From: Boris Brezillon <boris.brezillon@collabora.com>
To: Rob Herring <robh+dt@kernel.org>,
	Tomeu Vizoso <tomeu@tomeuvizoso.net>,
	Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>,
	Steven Price <steven.price@arm.com>,
	Robin Murphy <robin.murphy@arm.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>,
	dri-devel@lists.freedesktop.org
Subject: [PATCH 0/3] drm/panfrost: MMU fixes
Date: Mon,  1 Feb 2021 09:21:13 +0100	[thread overview]
Message-ID: <20210201082116.267208-1-boris.brezillon@collabora.com> (raw)

Hello,

Here are 2 fixes and one improvement for the page fault handling. Those
bugs were found while working on indirect draw supports which requires
the allocation of a big heap buffer for varyings, and the vertex/tiler
shaders seem to have access pattern that trigger those issues. I
remember discussing the first issue with Steve or Robin a while back,
but we never hit it before (now we do :)).

The last patch is a perf improvement: no need to re-enable hardware
interrupts if we know the threaded irq handler will be woken up right
away.

Regards,

Boris

Boris Brezillon (3):
  drm/panfrost: Clear MMU irqs before handling the fault
  drm/panfrost: Don't try to map pages that are already mapped
  drm/panfrost: Stay in the threaded MMU IRQ handler until we've handled
    all IRQs

 drivers/gpu/drm/panfrost/panfrost_mmu.c | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

-- 
2.26.2

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             reply	other threads:[~2021-02-01  8:21 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-01  8:21 Boris Brezillon [this message]
2021-02-01  8:21 ` [PATCH 1/3] drm/panfrost: Clear MMU irqs before handling the fault Boris Brezillon
2021-02-01  8:21   ` Boris Brezillon
2021-02-01 12:13   ` Steven Price
2021-02-01 12:13     ` Steven Price
2021-02-01  8:21 ` [PATCH 2/3] drm/panfrost: Don't try to map pages that are already mapped Boris Brezillon
2021-02-01  8:21   ` Boris Brezillon
2021-02-01 12:13   ` Steven Price
2021-02-01 12:13     ` Steven Price
2021-02-01  8:21 ` [PATCH 3/3] drm/panfrost: Stay in the threaded MMU IRQ handler until we've handled all IRQs Boris Brezillon
2021-02-01 12:13   ` Steven Price
2021-02-01 12:59     ` Boris Brezillon
2021-02-01 13:24       ` Steven Price
2021-02-01 13:47         ` Boris Brezillon
2021-02-03 14:45   ` Rob Herring
2021-02-03 15:43     ` Steven Price

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