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Subject: Re: [PATCH 02/19] arm64: expose number of page table levels on Kconfig level
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From: Jungseok Lee <jungseoklee85@gmail.com>
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Date: Sat, 31 Jan 2015 15:23:21 +0900
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Guenter Roeck <linux@roeck-us.net>, Will Deacon <Will.Deacon@arm.com>
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To: Catalin Marinas <catalin.marinas@arm.com>
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On Jan 30, 2015, at 11:56 PM, Catalin Marinas wrote:
> On Fri, Jan 30, 2015 at 02:43:11PM +0000, Kirill A. Shutemov wrote:
>> We would want to use number of page table level to define mm_struct.
>> Let's expose it as CONFIG_PGTABLE_LEVELS.
>> 
>> ARM64_PGTABLE_LEVELS is renamed to PGTABLE_LEVELS and defined before
>> sourcing init/Kconfig: arch/Kconfig will define default value and it's
>> sourced from init/Kconfig.
>> 
>> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
>> Cc: Catalin Marinas <catalin.marinas@arm.com>
>> Cc: Will Deacon <will.deacon@arm.com>
> 
> It looks fine.
> 
> Acked-by: Catalin Marinas <catalin.marinas@arm.com>

A system can boot up successfully on top of arm64/for-next/core branch under
4KB + {3|4}Level + CONFIG_DEBUG_RODATA, but I don't try it with 64KB pages.

Best Regards
Jungseok Lee