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Date:   Fri, 13 Nov 2020 12:25:08 +0000
From:   Catalin Marinas <catalin.marinas@arm.com>
To:     Mike Rapoport <rppt@kernel.org>
Cc:     Andrew Morton <akpm@linux-foundation.org>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        Andy Lutomirski <luto@kernel.org>,
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        David Hildenbrand <david@redhat.com>,
        Elena Reshetova <elena.reshetova@intel.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
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        "Kirill A. Shutemov" <kirill@shutemov.name>,
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        Mark Rutland <mark.rutland@arm.com>,
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Subject: Re: [PATCH v8 8/9] arch, mm: wire up memfd_secret system call were
 relevant
Message-ID: <20201113122507.GC3212@gaia>
References: <20201110151444.20662-1-rppt@kernel.org>
 <20201110151444.20662-9-rppt@kernel.org>
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Hi Mike,

On Tue, Nov 10, 2020 at 05:14:43PM +0200, Mike Rapoport wrote:
> diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
> index 6c1dcca067e0..c71c3fe0b6cd 100644
> --- a/arch/arm64/include/asm/unistd32.h
> +++ b/arch/arm64/include/asm/unistd32.h
> @@ -891,6 +891,8 @@ __SYSCALL(__NR_faccessat2, sys_faccessat2)
>  __SYSCALL(__NR_process_madvise, sys_process_madvise)
>  #define __NR_watch_mount 441
>  __SYSCALL(__NR_watch_mount, sys_watch_mount)
> +#define __NR_memfd_secret 442
> +__SYSCALL(__NR_memfd_secret, sys_memfd_secret)

arch/arm doesn't select ARCH_HAS_SET_DIRECT_MAP and doesn't support
memfd_secret(), so I wouldn't add it to the compat layer.

-- 
Catalin