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Date:   Fri, 1 May 2020 01:44:46 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     ira.weiny@...el.com
Cc:     linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Christian Koenig <christian.koenig@....com>,
        Huang Rui <ray.huang@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        dri-devel@...ts.freedesktop.org,
        "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
        Max Filippov <jcmvbkbc@...il.com>,
        Paul Mackerras <paulus@...ba.org>,
        "H. Peter Anvin" <hpa@...or.com>, sparclinux@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Helge Deller <deller@....de>, x86@...nel.org,
        linux-csky@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
        linux-snps-arc@...ts.infradead.org, linux-xtensa@...ux-xtensa.org,
        Borislav Petkov <bp@...en8.de>,
        Andy Lutomirski <luto@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        linux-arm-kernel@...ts.infradead.org,
        Chris Zankel <chris@...kel.net>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-parisc@...r.kernel.org, linux-mips@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org,
        "David S. Miller" <davem@...emloft.net>
Subject: sparc-related comment, to Re: [PATCH V1 07/10] arch/kmap: Ensure
 kmap_prot visibility

> --- a/arch/sparc/mm/highmem.c
> +++ b/arch/sparc/mm/highmem.c
> @@ -33,6 +33,7 @@
>  #include <asm/vaddrs.h>
>  
>  pgprot_t kmap_prot;
> +EXPORT_SYMBOL(kmap_prot);

Btw, I don't see why sparc needs this as a variable, as there is just
a single assignment to it.

If sparc is sorted out we can always make it a define, and use a define
for kmap_prot that defaults to PAGE_KERNEL, avoiding a little
more duplication.

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