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arm/armv8-r: fix unable to switch context in ISR context #14498

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xiaoxiang781216 merged 1 commit into from
Oct 25, 2024
Merged

arm/armv8-r: fix unable to switch context in ISR context #14498

xiaoxiang781216 merged 1 commit into from
Oct 25, 2024

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@anchao anchao commented Oct 24, 2024 •
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Summary

arm/armv8-r: fix unable to switch context in ISR context

Regression by #13651:

| commit 35c8c80a00a99ff0e19d51eaa74165bd830a36f8
| Author: ligd <liguiding1@xiaomi.com>
| Date:   Fri Jul 26 23:14:13 2024 +0800
|
| arch: change nxsched_suspend/resume_scheduler() called position

Signed-off-by: chao an anchao@lixiang.com

Impact

N/A

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@anchao
arm/armv8-r: fix unable to switch context in ISR context
85226ef 
Regression by:
| commit 35c8c80
| Author: ligd <liguiding1@xiaomi.com>
| Date:   Fri Jul 26 23:14:13 2024 +0800
|
| arch: change nxsched_suspend/resume_scheduler() called position

Signed-off-by: chao an <anchao@lixiang.com>
@github-actions github-actions bot added Arch: arm Issues related to ARM (32-bit) architecture Size: XS The size of the change in this PR is very small labels Oct 24, 2024
GUIDINGLI
GUIDINGLI reviewed Oct 24, 2024
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@anchao anchao requested review from GUIDINGLI and acassis October 24, 2024 13:53
GUIDINGLI
GUIDINGLI requested changes Oct 24, 2024
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The SMP is another questions, so you should split to another patch or PR

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anchao commented Oct 25, 2024

The SMP is another questions, so you should split to another patch or PR

You should check your submission carefully if which have any rookie mistakes.

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anchao commented Oct 25, 2024

@GUIDINGLI @hujun260

After your and hujun's changes:

  1. any irq_dispatch() call needs to properly refresh tcb to check if context switch has occurred
  2. The trace location also needs to be updated carefully
  3. new current registers must be update and return from ISR.

but your previous changes completely missed on some arm-specific chips:

image

@xiaoxiang781216 xiaoxiang781216 merged commit ea4c4ef into apache:master Oct 25, 2024
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GUIDINGLI commented Oct 28, 2024

@anchao
Why NOT two patches fix two questions ?

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anchao commented Oct 28, 2024

@anchao Why NOT two patches fix two questions ?

@GUIDINGLI #14514 :)

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@GUIDINGLI GUIDINGLI GUIDINGLI requested changes

@xiaoxiang781216 xiaoxiang781216 xiaoxiang781216 approved these changes

@acassis acassis Awaiting requested review from acassis

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Arch: arm Issues related to ARM (32-bit) architecture Size: XS The size of the change in this PR is very small

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