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* [Bug 1001984] New: i386 SMP startup hangs (primary CPU spinlocks forever)
@ 2014-05-09 12:27 bugzilla-daemon
  0 siblings, 0 replies; 2+ messages in thread
From: bugzilla-daemon @ 2014-05-09 12:27 UTC (permalink / raw)
  To: ecos-bugs

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http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001984

            Bug ID: 1001984
           Summary: i386 SMP startup hangs (primary CPU spinlocks forever)
           Product: eCos
           Version: 3.0
            Target: pc (i386 PC target)
  Architecture/Host All
                OS:
            Status: UNCONFIRMED
          Severity: normal
          Priority: low
         Component: HAL
          Assignee: unassigned@bugs.ecos.sourceware.org
          Reporter: christoph.borchert@tu-dortmund.de
                CC: ecos-bugs@ecos.sourceware.org

Created attachment 2510
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2510&action=edit
patch

Dear eCos developers,

it appears that during i386 SMP startup, the primary CPU spinlocks forever,
waiting for cyg_hal_smp_cpu_entry[cpu] being reset. I assume this should be
carried out be the secondary CPUs, after that cyg_hal_smp_cpu_entry[cpu] has
been set. This behavior can be reproduced with qemu/kvm -smp 2.

Attached is a patch that solves this issue (at least for me).

Best regards,
Christoph

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^ permalink raw reply	[flat|nested] 2+ messages in thread
* [Bug 1001984] New: i386 SMP startup hangs (primary CPU spinlocks forever)
@ 2014-05-09 12:27 bugzilla-daemon
  0 siblings, 0 replies; 2+ messages in thread
From: bugzilla-daemon @ 2014-05-09 12:27 UTC (permalink / raw)
  To: unassigned

Please do not reply to this email, use the link below.

http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001984

            Bug ID: 1001984
           Summary: i386 SMP startup hangs (primary CPU spinlocks forever)
           Product: eCos
           Version: 3.0
            Target: pc (i386 PC target)
  Architecture/Host All
                OS:
            Status: UNCONFIRMED
          Severity: normal
          Priority: low
         Component: HAL
          Assignee: unassigned@bugs.ecos.sourceware.org
          Reporter: christoph.borchert@tu-dortmund.de
                CC: ecos-bugs@ecos.sourceware.org

Created attachment 2510
  --> http://bugs.ecos.sourceware.org/attachment.cgi?id=2510&action=edit
patch

Dear eCos developers,

it appears that during i386 SMP startup, the primary CPU spinlocks forever,
waiting for cyg_hal_smp_cpu_entry[cpu] being reset. I assume this should be
carried out be the secondary CPUs, after that cyg_hal_smp_cpu_entry[cpu] has
been set. This behavior can be reproduced with qemu/kvm -smp 2.

Attached is a patch that solves this issue (at least for me).

Best regards,
Christoph

-- 
You are receiving this mail because:
You are the assignee for the bug.


^ permalink raw reply	[flat|nested] 2+ messages in thread
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