[PATCH v2] ARM64 / SMP: Switch pr_err() to pr_debug() for disabled GICC entry

Catalin Marinas catalin.marinas at arm.com
Fri Jul 3 04:01:37 PDT 2015

On Fri, Jul 03, 2015 at 03:29:06PM +0800, Hanjun Guo wrote:
> It is normal that firmware presents GICC entry or entries (processors)
> with disabled flag in ACPI MADT, taking a system of 16 cpus for example,
> ACPI firmware may present 8 ebabled first with another 8 cpus disabled
> in MADT, the disabled cpus can be hot-added later.
> Firmware may also present more cpus than the hardware actually has, but
> disabled the unused ones, and easily enable it when the hardware has such
> cpus to make the firmware code scalable.
> So that's not an error for disabled cpus in MADT, we can switch pr_err()
> to pr_debug() to make the boot a little quieter by default.
> Since hwid for disabled cpus often are invalid, and we check invalid hwid
> fisrt in the code, for use case that hot add cpus later will be filtered
> out and will not be counted in possible cups, so move this check before
> the hwid one to prepare the code to count for disabeld cpus when cpu
> hot-plug is introduced.
> Signed-off-by: Hanjun Guo <hanjun.guo at linaro.org>

Applied. Thanks.


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