From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Toshi Kani <toshi.kani@hp.com>
Cc: Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Arnd Bergmann <arnd@arndb.de>, Linux MM <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
the arch/x86 maintainers <x86@kernel.org>,
linux-nvdimm@lists.01.org, jgross@suse.com,
stefan.bader@canonical.com, Andy Lutomirski <luto@amacapital.net>,
Henrique de Moraes Holschuh <hmh@hmh.eng.br>,
yigal@plexistor.com,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Elliott@hp.com, "Luis R. Rodriguez" <mcgrof@suse.com>,
Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v11 6/12] x86, mm, asm-gen: Add ioremap_wt() for WT
Date: Sat, 30 May 2015 11:18:26 +0200 [thread overview]
Message-ID: <CAMuHMdWLMUr9ggkhbOiDSsc_eq04En3L5oX5pL=9gHuR6JDb+w@mail.gmail.com> (raw)
In-Reply-To: <1432940350-1802-7-git-send-email-toshi.kani@hp.com>
On Sat, May 30, 2015 at 12:59 AM, Toshi Kani <toshi.kani@hp.com> wrote:
> --- a/include/asm-generic/io.h
> +++ b/include/asm-generic/io.h
> @@ -785,8 +785,17 @@ static inline void __iomem *ioremap_wc(phys_addr_t offset, size_t size)
> }
> #endif
>
> +#ifndef ioremap_wt
> +#define ioremap_wt ioremap_wt
> +static inline void __iomem *ioremap_wt(phys_addr_t offset, size_t size)
> +{
> + return ioremap_nocache(offset, size);
> +}
> +#endif
> +
> #ifndef iounmap
> #define iounmap iounmap
> +
> static inline void iounmap(void __iomem *addr)
> {
> }
> diff --git a/include/asm-generic/iomap.h b/include/asm-generic/iomap.h
> index 1b41011..d8f8622 100644
> --- a/include/asm-generic/iomap.h
> +++ b/include/asm-generic/iomap.h
> @@ -66,6 +66,10 @@ extern void ioport_unmap(void __iomem *);
> #define ioremap_wc ioremap_nocache
> #endif
>
> +#ifndef ARCH_HAS_IOREMAP_WT
> +#define ioremap_wt ioremap_nocache
> +#endif
Defining ioremap_wt in two different places in asm-generic looks fishy to me.
If <asm/io.h> already provides it (either through asm-generic/io.h or
arch/<arch>/include/asm/io.h), why does asm-generic/iomap.h need to define
its own version?
I see this pattern already exists for ioremap_wc...
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--
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next prev parent reply other threads:[~2015-05-30 9:18 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-29 22:58 [PATCH v11 0/12] Support Write-Through mapping on x86 Toshi Kani
2015-05-29 22:58 ` [PATCH v11 1/12] x86, mm, pat: Cleanup init flags in pat_init() Toshi Kani
2015-05-29 22:59 ` [PATCH v11 2/12] x86, mm, pat: Refactor !pat_enabled handling Toshi Kani
2015-05-31 9:46 ` Borislav Petkov
2015-05-31 9:48 ` [PATCH 1/4] x86/pat: Untangle pat_init() Borislav Petkov
2015-05-31 9:48 ` [PATCH 2/4] x86/pat: Merge pat_init_cache_modes() into its caller Borislav Petkov
2015-05-31 10:15 ` Juergen Gross
2015-05-31 10:24 ` Borislav Petkov
2015-05-31 10:23 ` Borislav Petkov
2015-05-31 11:02 ` Juergen Gross
2015-06-01 18:15 ` Toshi Kani
2015-05-31 9:48 ` [PATCH 3/4] x86/pat: Emulate PAT when it is disabled Borislav Petkov
2015-05-31 9:48 ` [PATCH 4/4] x86/pat: Remove pat_enabled() checks Borislav Petkov
2015-06-01 18:26 ` Toshi Kani
2015-06-01 18:51 ` Borislav Petkov
2015-06-01 16:17 ` [PATCH 1/4] x86/pat: Untangle pat_init() Toshi Kani
2015-06-01 15:50 ` [PATCH v11 2/12] x86, mm, pat: Refactor !pat_enabled handling Toshi Kani
2015-05-29 22:59 ` [PATCH v11 3/12] x86, mm, pat: Set WT to PA7 slot of PAT MSR Toshi Kani
2015-05-29 22:59 ` [PATCH v11 4/12] x86, mm, pat: Change reserve_memtype() for WT Toshi Kani
2015-05-29 22:59 ` [PATCH v11 5/12] x86, asm: Change is_new_memtype_allowed() " Toshi Kani
2015-05-29 22:59 ` [PATCH v11 6/12] x86, mm, asm-gen: Add ioremap_wt() " Toshi Kani
2015-05-30 9:18 ` Geert Uytterhoeven [this message]
2015-05-31 0:58 ` Toshi Kani
2015-05-29 22:59 ` [PATCH v11 7/12] arch/*/asm/io.h: Add ioremap_wt() to all architectures Toshi Kani
2015-05-29 22:59 ` [PATCH v11 8/12] video/fbdev, asm/io.h: Remove ioremap_writethrough() Toshi Kani
2015-05-29 22:59 ` [PATCH v11 9/12] x86, mm, pat: Add pgprot_writethrough() for WT Toshi Kani
2015-05-29 22:59 ` [PATCH v11 10/12] x86, mm, asm: Add WT support to set_page_memtype() Toshi Kani
2015-05-29 22:59 ` [PATCH v11 11/12] x86, mm: Add set_memory_wt() for WT Toshi Kani
2015-05-29 22:59 ` [PATCH v11 12/12] drivers/block/pmem: Map NVDIMM with ioremap_wt() Toshi Kani
2015-05-30 1:18 ` Dan Williams
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