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Date:   Fri, 13 Nov 2020 14:06:56 +0000
From:   Matthew Wilcox <willy@infradead.org>
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>,
        Arnd Bergmann <arnd@arndb.de>, Borislav Petkov <bp@alien8.de>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Christopher Lameter <cl@linux.com>,
        Dan Williams <dan.j.williams@intel.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        David Hildenbrand <david@redhat.com>,
        Elena Reshetova <elena.reshetova@intel.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
        James Bottomley <jejb@linux.ibm.com>,
        "Kirill A. Shutemov" <kirill@shutemov.name>,
        Mark Rutland <mark.rutland@arm.com>,
        Mike Rapoport <rppt@linux.ibm.com>,
        Michael Kerrisk <mtk.manpages@gmail.com>,
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        x86@kernel.org, Hagen Paul Pfeifer <hagen@jauu.net>
Subject: Re: [PATCH v8 4/9] mm: introduce memfd_secret system call to create
 "secret" memory areas
Message-ID: <20201113140656.GG17076@casper.infradead.org>
References: <20201110151444.20662-1-rppt@kernel.org>
 <20201110151444.20662-5-rppt@kernel.org>
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On Tue, Nov 10, 2020 at 05:14:39PM +0200, Mike Rapoport wrote:
> diff --git a/mm/Kconfig b/mm/Kconfig
> index c89c5444924b..d8d170fa5210 100644
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -884,4 +884,7 @@ config ARCH_HAS_HUGEPD
>  config MAPPING_DIRTY_HELPERS
>          bool
>  
> +config SECRETMEM
> +	def_bool ARCH_HAS_SET_DIRECT_MAP && !EMBEDDED

So I now have to build this in, whether I want it or not?