From: Thierry Reding <thierry.reding@gmail.com>
To: dri-devel@lists.freedesktop.org
Cc: Alexandre Courbot <gnurou@gmail.com>
Subject: [PATCH 7/8] drm/tegra: gem: Flush buffer objects upon allocation
Date: Tue, 16 Dec 2014 17:15:14 +0100 [thread overview]
Message-ID: <1418746515-24773-8-git-send-email-thierry.reding@gmail.com> (raw)
In-Reply-To: <1418746515-24773-1-git-send-email-thierry.reding@gmail.com>
From: Thierry Reding <treding@nvidia.com>
Buffers obtained via shmem may still have associated cachelines. If they
aren't properly flushed they may cause framebuffer corruption if the
cache gets flushed after the application has drawn to it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
drivers/gpu/drm/tegra/gem.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
index da32086cbeaf..9a12adf708db 100644
--- a/drivers/gpu/drm/tegra/gem.c
+++ b/drivers/gpu/drm/tegra/gem.c
@@ -231,6 +231,8 @@ static int tegra_bo_get_pages(struct drm_device *drm, struct tegra_bo *bo,
return PTR_ERR(bo->sgt);
}
+ drm_clflush_sg(bo->sgt);
+
return 0;
}
--
2.1.3
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next prev parent reply other threads:[~2014-12-16 16:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-16 16:15 [PATCH 0/8] drm/tegra: Fixes for v3.19-rc1 Thierry Reding
2014-12-16 16:15 ` [PATCH 1/8] drm/irq: Add drm_crtc_send_vblank_event() Thierry Reding
2014-12-16 16:15 ` [PATCH 2/8] drm/irq: Add drm_crtc_handle_vblank() Thierry Reding
2014-12-16 16:15 ` [PATCH 3/8] drm/irq: Add drm_crtc_vblank_count() Thierry Reding
2014-12-16 21:03 ` Daniel Vetter
2014-12-16 16:15 ` [PATCH 4/8] drm/tegra: dc: Consistently use the same pipe Thierry Reding
2014-12-16 16:15 ` [PATCH 5/8] drm/tegra: dc: Fix a potential race on page-flip completion Thierry Reding
2014-12-18 13:45 ` Alexandre Courbot
2014-12-16 16:15 ` [PATCH 6/8] drm/cache: Implement drm_clflush_*() for ARM Thierry Reding
2014-12-16 16:15 ` Thierry Reding [this message]
2014-12-16 16:15 ` [PATCH 8/8] drm/tegra: gem: Use the proper size for GEM objects Thierry Reding
2014-12-16 18:38 ` [PATCH 0/8] drm/tegra: Fixes for v3.19-rc1 Sean Paul
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