"Will Deacon" will.deacon@arm.com wrote on 02/21/2011 06:56:13 PM:
- On (some versions of?) Versatile Express SMP Cortex-A9 SMP boards,
a CPU
errata (#720789) causes TLB flushes to sometime fail, which can lead
to
random problems when running GDB in SMP mode (and probably
elsewhere).
There is a kernel work-around for this problem activated by CONFIG_ARM_ERRATA_720789, but this is unfortuantely not active on the Linaro kernels. (On OMAP4, this happens automatically due to an
entry in
mach-omap2/Kconfig. There is no such entry in mach-vexpress/Kconfig currently.)
Could you send a patch to Russell for that?
I have a patch that enables some other workarounds that we probably want enabled for the VE as well.
Great, thanks!
I can CC you (Ulrich) on that if you'd prefer?
Sure, that's fine with me ...
Mit freundlichen Gruessen / Best Regards
Ulrich Weigand
-- Dr. Ulrich Weigand | Phone: +49-7031/16-3727 STSM, GNU compiler and toolchain for Linux on System z and Cell/B.E. IBM Deutschland Research & Development GmbH Vorsitzender des Aufsichtsrats: Martin Jetter | Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen | Registergericht: Amtsgericht Stuttgart, HRB 243294
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Ulrich Weigand