On Mon, 21 Feb 2011, Ulrich Weigand wrote: > > Hi Nicolas, hi John, > > during tests of hardware watchpoint support for GDB I run into a couple of > Linux kernel issues: > > - 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? > - On machines that do not support watchpoints (e.g. IGEP with current > kernels), this fact is not reported properly to user space. Will Deacon > posted a patch to fix this: > http://lists.infradead.org/pipermail/linux-arm-kernel/2011-February/041492.html > > Can we get fixes for these issues included in the Linaro kernel (git tree > and/or packages ... not sure where the best place would be)? This is included in the Linaro kernel repository already: http://git.linaro.org/gitweb?p=kernel/linux-linaro-2.6.37.git;a=commit;h=40ef21c84e Next packaging of the kernel will pick it up. Nicolas _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
