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Enable ARM M4F FPU lazy stacking #2049

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zephyrbot opened this issue Jun 29, 2016 · 1 comment
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Enable ARM M4F FPU lazy stacking #2049

zephyrbot opened this issue Jun 29, 2016 · 1 comment
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area: ARM ARM (32-bit) Architecture area: Kernel Enhancement Changes/Updates/Additions to existing features priority: medium Medium impact/importance bug

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@zephyrbot
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zephyrbot commented Jun 29, 2016 •
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Reported by Maureen Helm:

Initial support for hardware floating point used a simple scheme to always save/restore floating point context. The hardware supports a lazy stacking feature to reduce interrupt latency. This feature is used in both FreeRTOS and mbed RTX.

http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dai0298a/index.html

(Imported from Jira ZEP-505)
@zephyrbot zephyrbot added priority: medium Medium impact/importance bug area: ARM ARM (32-bit) Architecture area: Kernel Enhancement Changes/Updates/Additions to existing features labels Sep 23, 2017
@zephyrbot zephyrbot added this to the v1.10.0 milestone Sep 23, 2017
@MaureenHelm MaureenHelm removed this from the v1.10.0 milestone Oct 16, 2017
@ioannisg
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Lazy stacking is now supported in ARM, @MaureenHelm, @carlescufi , so I close this issue.

This was referenced Jun 23, 2019
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area: ARM ARM (32-bit) Architecture area: Kernel Enhancement Changes/Updates/Additions to existing features priority: medium Medium impact/importance bug
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