From: Boris Brezillon <boris.brezillon@collabora.com>
To: "Steven Price" <steven.price@arm.com>,
"Liviu Dudau" <liviu.dudau@arm.com>,
"Adrián Larumbe" <adrian.larumbe@collabora.com>,
"Akash Goel" <akash.goel@arm.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@gmail.com>,
Simona Vetter <simona@ffwll.ch>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Boris Brezillon <boris.brezillon@collabora.com>
Subject: [PATCH 0/4] drm/panthor: Fix partial unmaps, again
Date: Thu, 17 Sep 2026 14:33:42 +0200 [thread overview]
Message-ID: <20260917-panthor-fix-partial-unmap-v1-0-c7008f15fea3@collabora.com> (raw)
The first patch is just a theoretical perf improvement to avoid
unnecessary unmap+map caused by false positive returned by
iova_mapped_as_huge_page(). The second patch is a fix for a real
bug when iova_mapped_as_huge_page() is called on an imported BO.
The last 2 patches are just consolidating the logic to make things
clearer.
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
---
Boris Brezillon (4):
drm/panthor: Avoid false positives in iova_mapped_as_huge_page()
drm/panthor: Fix iova_mapped_as_huge_page() for imported BOs
drm/panthor: Consolidate the is-huge-page-mapping test
drm/panthor: Actually check huge-page mapping on sparse regions
drivers/gpu/drm/panthor/panthor_mmu.c | 100 ++++++++++++++++++++++++----------
1 file changed, 71 insertions(+), 29 deletions(-)
---
base-commit: 5535d5e61a77ad79118ea7665ce1c14f857f0f12
change-id: 20260916-panthor-fix-partial-unmap-a52034f21184
Best regards,
--
Boris Brezillon <boris.brezillon@collabora.com>
next reply other threads:[~2026-09-17 12:33 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-17 12:33 Boris Brezillon [this message]
2026-09-17 12:33 ` [PATCH 1/4] drm/panthor: Avoid false positives in iova_mapped_as_huge_page() Boris Brezillon
2026-09-18 16:34 ` Akash Goel
2026-09-17 12:33 ` [PATCH 2/4] drm/panthor: Fix iova_mapped_as_huge_page() for imported BOs Boris Brezillon
2026-09-18 16:35 ` Akash Goel
2026-09-17 12:33 ` [PATCH 3/4] drm/panthor: Consolidate the is-huge-page-mapping test Boris Brezillon
2026-09-18 16:39 ` Akash Goel
2026-09-17 12:33 ` [PATCH 4/4] drm/panthor: Actually check huge-page mapping on sparse regions Boris Brezillon
2026-09-18 16:48 ` Akash Goel
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