Bug 103656 - get_cpuid inline asm violates red zone
Summary: get_cpuid inline asm violates red zone
Status: RESOLVED FIXED
Alias: None
Product: PulseAudio
Classification: Unclassified
Component: core (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: pulseaudio-bugs
QA Contact: pulseaudio-bugs
URL: https://gcc.gnu.org/bugzilla/show_bug...
Whiteboard:
Keywords:
Depends on:
Blocks: 99066
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Reported: 2017-11-09 23:13 UTC by EoD
Modified: 2017-12-06 23:13 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

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Description EoD 2017-11-09 23:13:02 UTC 
The original issue with get_cpuid() came while trying to debug bug 99066 and has been forwarded to GCC (see URL above).

Apparently the current implementation of get_cpuid() is violating the red zone (see GCC bugreport) and hence does segfault on x32.

There are several suggestions on the GCC bug report to work around/fix the issue.
Comment 1 Tanu Kaskinen 2017-11-21 13:23:26 UTC 
Great! Thanks a lot for filing the GCC bug. Using the __cpuid macro seems like the best solution. I'll make a patch.
Comment 2 Tanu Kaskinen 2017-11-22 15:15:02 UTC 
Patch submitted:
https://patchwork.freedesktop.org/patch/189761/
Comment 3 Tanu Kaskinen 2017-12-06 23:13:35 UTC 
The patch is now in master.

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