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Message-ID: <Y1vg9J9CtD9h5DCW@arm.com>
Date: Fri, 28 Oct 2022 15:02:28 +0100
From: Catalin Marinas <catalin.marinas@....com>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>,
Andy Lutomirski <luto@...nel.org>,
Peter Zijlstra <peterz@...radead.org>, x86@...nel.org,
Kostya Serebryany <kcc@...gle.com>,
Andrey Ryabinin <ryabinin.a.a@...il.com>,
Andrey Konovalov <andreyknvl@...il.com>,
Alexander Potapenko <glider@...gle.com>,
Taras Madan <tarasmadan@...gle.com>,
Dmitry Vyukov <dvyukov@...gle.com>,
"H . J . Lu" <hjl.tools@...il.com>,
Andi Kleen <ak@...ux.intel.com>,
Rick Edgecombe <rick.p.edgecombe@...el.com>,
Bharata B Rao <bharata@....com>,
Jacob Pan <jacob.jun.pan@...ux.intel.com>,
Ashok Raj <ashok.raj@...el.com>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org,
"David S. Miller" <davem@...emloft.net>,
Will Deacon <will@...nel.org>
Subject: Re: [PATCHv11 09/16] mm: Expose untagging mask in /proc/$PID/status
On Tue, Oct 25, 2022 at 03:17:15AM +0300, Kirill A. Shutemov wrote:
> diff --git a/arch/arm64/include/asm/mmu_context.h b/arch/arm64/include/asm/mmu_context.h
> index d3f8b5df0c1f..81ac12d69795 100644
> --- a/arch/arm64/include/asm/mmu_context.h
> +++ b/arch/arm64/include/asm/mmu_context.h
> @@ -278,6 +278,12 @@ void post_ttbr_update_workaround(void);
> unsigned long arm64_mm_context_get(struct mm_struct *mm);
> void arm64_mm_context_put(struct mm_struct *mm);
>
> +#define mm_untag_mask mm_untag_mask
> +static inline unsigned long mm_untag_mask(struct mm_struct *mm)
> +{
> + return -1UL >> 8;
> +}
> +
> #include <asm-generic/mmu_context.h>
For arm64:
Acked-by: Catalin Marinas <catalin.marinas@....com>
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