[RTEMS Project] #3885: Context switch extension is broken in SMP configurations

RTEMS trac trac at rtems.org
Thu Feb 27 06:58:32 UTC 2020


#3885: Context switch extension is broken in SMP configurations
-----------------------------+------------------------------
 Reporter:  Sebastian Huber  |       Owner:  Sebastian Huber
     Type:  defect           |      Status:  assigned
 Priority:  normal           |   Milestone:  5.1
Component:  score            |     Version:  5
 Severity:  normal           |  Resolution:
 Keywords:                   |  Blocked By:
 Blocking:                   |
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Comment (by Sebastian Huber):

 Replying to [comment:6 Chris Johns]:
 > Replying to [comment:4 Sebastian Huber]:
 > > Moving the thread switch extension calls into the context of the heir
 thread breaks for example the stack checker. It checks that the current
 stack pointer is in the stack area of a thread.
 >
 > Is a patch to fix the stack checker being worked on?
 >
 > I know of applications that have this running during development.

 This was easy to fix:

 https://lists.rtems.org/pipermail/devel/2020-February/057759.html

 I just wanted to highlight that this change can easily break existing
 extensions.

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Ticket URL: <http://devel.rtems.org/ticket/3885#comment:7>
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