linux-kernel - Re: [PATCH V3 15/15] kmap: Consolidate kmap

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Message-ID: <20200507225109.GB1428632@iweiny-DESK2.sc.intel.com>
Date:   Thu, 7 May 2020 15:51:09 -0700
From:   Ira Weiny <ira.weiny@...el.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Christoph Hellwig <hch@...radead.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
        Helge Deller <deller@....de>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        "David S. Miller" <davem@...emloft.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Chris Zankel <chris@...kel.net>,
        Max Filippov <jcmvbkbc@...il.com>,
        Dan Williams <dan.j.williams@...el.com>,
        linux-snps-arc@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-csky@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, sparclinux@...r.kernel.org,
        linux-xtensa@...ux-xtensa.org, dri-devel@...ts.freedesktop.org,
        Christian Koenig <christian.koenig@....com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH V3 15/15] kmap: Consolidate kmap_prot definitions

On Thu, May 07, 2020 at 01:53:07PM -0700, Andrew Morton wrote:
> On Thu,  7 May 2020 08:00:03 -0700 ira.weiny@...el.com wrote:
> 
> > From: Ira Weiny <ira.weiny@...el.com>
> > 
> > Most architectures define kmap_prot to be PAGE_KERNEL.
> > 
> > Let sparc and xtensa define there own and define PAGE_KERNEL as the
> > default if not overridden.
> > 
> 
> checkpatch considered useful ;)

Yes sorry...  V3.1 on it's way...

Ira

> 
> 
> From: Andrew Morton <akpm@...ux-foundation.org>
> Subject: kmap-consolidate-kmap_prot-definitions-checkpatch-fixes
> 
> WARNING: macros should not use a trailing semicolon
> #134: FILE: arch/sparc/include/asm/highmem.h:33:
> +#define kmap_prot __pgprot(SRMMU_ET_PTE | SRMMU_PRIV | SRMMU_CACHE);
> 
> total: 0 errors, 1 warnings, 100 lines checked
> 
> NOTE: For some of the reported defects, checkpatch may be able to
>       mechanically convert to the typical style using --fix or --fix-inplace.
> 
> ./patches/kmap-consolidate-kmap_prot-definitions.patch has style problems, please review.
> 
> NOTE: If any of the errors are false positives, please report
>       them to the maintainer, see CHECKPATCH in MAINTAINERS.
> 
> Please run checkpatch prior to sending patches
> 
> Cc: Ira Weiny <ira.weiny@...el.com>
> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
> ---
> 
>  arch/sparc/include/asm/highmem.h |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- a/arch/sparc/include/asm/highmem.h~kmap-consolidate-kmap_prot-definitions-checkpatch-fixes
> +++ a/arch/sparc/include/asm/highmem.h
> @@ -30,7 +30,7 @@
>  /* declarations for highmem.c */
>  extern unsigned long highstart_pfn, highend_pfn;
>  
> -#define kmap_prot __pgprot(SRMMU_ET_PTE | SRMMU_PRIV | SRMMU_CACHE);
> +#define kmap_prot __pgprot(SRMMU_ET_PTE | SRMMU_PRIV | SRMMU_CACHE)
>  extern pte_t *pkmap_page_table;
>  
>  void kmap_init(void) __init;
> _
>