linux-mm.kvack.org archive mirror
 help / color / mirror / Atom feed
From: Dan Williams <dan.j.williams@intel.com>
To: Arnd Bergmann <arnd@arndb.de>, Ingo Molnar <mingo@redhat.com>,
	Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ross Zwisler <ross.zwisler@linux.intel.com>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: Juergen Gross <jgross@suse.com>, X86 ML <x86@kernel.org>,
	"Kani, Toshimitsu" <toshi.kani@hp.com>,
	"linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Luis Rodriguez <mcgrof@suse.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Stefan Bader <stefan.bader@canonical.com>,
	Andy Lutomirski <luto@amacapital.net>,
	linux-mm@kvack.org, geert@linux-m68k.org, ralf@linux-mips.org,
	Henrique de Moraes Holschuh <hmh@hmh.eng.br>,
	mpe@ellerman.id.au, Tejun Heo <tj@kernel.org>,
	Paul Mackerras <paulus@samba.org>, Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v3 2/6] cleanup IORESOURCE_CACHEABLE vs ioremap()
Date: Wed, 3 Jun 2015 16:58:24 -0700	[thread overview]
Message-ID: <CAPcyv4jpP28UfNDsVa9pV0FuygpirHHWE2AiVgN0eok0+n+Q_g@mail.gmail.com> (raw)
In-Reply-To: <20150603213423.13749.55822.stgit@dwillia2-desk3.amr.corp.intel.com>

On Wed, Jun 3, 2015 at 2:34 PM, Dan Williams <dan.j.williams@intel.com> wrote:
> Quoting Arnd:
>     I was thinking the opposite approach and basically removing all uses
>     of IORESOURCE_CACHEABLE from the kernel. There are only a handful of
>     them.and we can probably replace them all with hardcoded
>     ioremap_cached() calls in the cases they are actually useful.
>
> All existing usages of IORESOURCE_CACHEABLE call ioremap() instead of
> ioremap_nocache() if the resource is cacheable, however ioremap() is
> uncached by default.  Clearly none of the existing usages care about the
> cacheability, so let's clean that up before introducing generic
> ioremap_cache() support across architectures.
>
> Suggested-by: Arnd Bergmann <arnd@arndb.de>

Signed-off-by: Dan Williams <dan.j.williams@intel.com>

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>

  reply	other threads:[~2015-06-03 23:58 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-03 21:34 [PATCH v3 0/6] pmem api, generic ioremap_cache, and memremap Dan Williams
2015-06-03 21:34 ` [PATCH v3 1/6] arch: unify ioremap prototypes and macro aliases Dan Williams
2015-06-03 21:34 ` [PATCH v3 2/6] cleanup IORESOURCE_CACHEABLE vs ioremap() Dan Williams
2015-06-03 23:58   ` Dan Williams [this message]
2015-06-03 21:34 ` [PATCH v3 3/6] arch/*/asm/io.h: add ioremap_cache() to all architectures Dan Williams
2015-06-03 21:34 ` [PATCH v3 4/6] devm: fix ioremap_cache() usage Dan Williams
2015-06-03 21:34 ` [PATCH v3 5/6] arch: introduce memremap_cache() and memremap_wt() Dan Williams
2015-06-08 16:27   ` Andy Shevchenko
2015-06-08 18:25     ` Dan Williams
2015-06-08 19:04       ` Andy Shevchenko
2015-06-08 19:39         ` Dan Williams
2015-06-03 21:34 ` [PATCH v3 6/6] arch, x86: pmem api for ensuring durability of persistent memory updates Dan Williams
2015-06-03 21:38 ` [PATCH v3 0/6] pmem api, generic ioremap_cache, and memremap Dan Williams

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAPcyv4jpP28UfNDsVa9pV0FuygpirHHWE2AiVgN0eok0+n+Q_g@mail.gmail.com \
    --to=dan.j.williams@intel.com \
    --cc=akpm@linux-foundation.org \
    --cc=arnd@arndb.de \
    --cc=benh@kernel.crashing.org \
    --cc=bp@alien8.de \
    --cc=geert@linux-m68k.org \
    --cc=hch@lst.de \
    --cc=hmh@hmh.eng.br \
    --cc=hpa@zytor.com \
    --cc=jgross@suse.com \
    --cc=konrad.wilk@oracle.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-nvdimm@lists.01.org \
    --cc=luto@amacapital.net \
    --cc=mcgrof@suse.com \
    --cc=mingo@redhat.com \
    --cc=mpe@ellerman.id.au \
    --cc=paulus@samba.org \
    --cc=ralf@linux-mips.org \
    --cc=ross.zwisler@linux.intel.com \
    --cc=stefan.bader@canonical.com \
    --cc=tglx@linutronix.de \
    --cc=tj@kernel.org \
    --cc=toshi.kani@hp.com \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox