* [Bug 110904] [VKMS] vblank counter error
@ 2019-06-12 11:10 bugzilla-daemon
2019-06-13 9:29 ` bugzilla-daemon
0 siblings, 1 reply; 2+ messages in thread
From: bugzilla-daemon @ 2019-06-12 11:10 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=110904
Bug ID: 110904
Summary: [VKMS] vblank counter error
Product: DRI
Version: DRI git
Hardware: Other
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: DRM/other
Assignee: dri-devel@lists.freedesktop.org
Reporter: oleg.vasilev@intel.com
VKMS uses vblank simulation through hrtimer.
Updates to vblank counter in DRM are performed through drm_update_vblank_count,
where the elapsed time in ns divided by vblank period.
VKMS vblank timestamp computation approach results in negative elapsed time,
which leads to trash u64 division result.
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2019-06-12 11:10 [Bug 110904] [VKMS] vblank counter error bugzilla-daemon
2019-06-13 9:29 ` bugzilla-daemon
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