linux-kernel - Re: [PATCH] arm64/mm: Simplify protection flag creation for kernel huge mappings

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Message-ID: <20190604125100.GC6610@arrakis.emea.arm.com>
Date:   Tue, 4 Jun 2019 13:51:00 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Anshuman Khandual <anshuman.khandual@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH] arm64/mm: Simplify protection flag creation for kernel
 huge mappings

On Mon, May 27, 2019 at 09:28:15AM +0530, Anshuman Khandual wrote:
> Even though they have got the same value, PMD_TYPE_SECT and PUD_TYPE_SECT
> get used for kernel huge mappings. But before that first the table bit gets
> cleared using leaf level PTE_TABLE_BIT. Though functionally they are same,
> we should use page table level specific macros to be consistent as per the
> MMU specifications. Create page table level specific wrappers for kernel
> huge mapping entries and just drop mk_sect_prot() which does not have any
> other user.
> 
> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: Mark Rutland <mark.rutland@....com>

Queued for 5.3. Thanks.

-- 
Catalin