Re: [Xen-devel] Bringing up sequence for non-boot CPU fails

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2014-02-18 at 20:17 +0200, Oleksandr Tyshchenko wrote:
> Ian,
> I have checked your suggestion with full cache flush.
> For this purposes I have used ARMV7 specific function from our U-Boot.
> This function performs clean and invalidation of the entire data cache
> at all levels.
> I call it in __cpu_up() before arch_cpu_up() calling.

> It seems, the issue doesn't reproduced.

OK good, thanks for doing the experiment.

> Now we need to find missing cache flushes).

One approach would be to move the flush earlier and earlier, essentially
bisecting the boot sequence.

Ian.


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