From: Christoph Hellwig <hch@lst.de>
To: Richard Weinberger <richard@nod.at>
Cc: Christoph Hellwig <hch@lst.de>,
Dan Williams <dan.j.williams@intel.com>,
arnd@arndb.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com,
tglx@linutronix.de, ross.zwisler@linux.intel.com,
akpm@linux-foundation.org, jgross@suse.com, x86@kernel.org,
toshi.kani@hp.com, linux-nvdimm@lists.01.org,
benh@kernel.crashing.org, mcgrof@suse.com,
konrad.wilk@oracle.com, linux-kernel@vger.kernel.org,
stefan.bader@canonical.com, luto@amacapital.net,
linux-mm@kvack.org, geert@linux-m68k.org, ralf@linux-mips.org,
hmh@hmh.eng.br, mpe@ellerman.id.au, tj@kernel.org,
paulus@samba.org
Subject: Re: [PATCH v5 6/6] arch, x86: pmem api for ensuring durability of persistent memory updates
Date: Wed, 24 Jun 2015 14:08:20 +0200 [thread overview]
Message-ID: <20150624120820.GA17542@lst.de> (raw)
In-Reply-To: <5589374D.9060009@nod.at>
On Tue, Jun 23, 2015 at 12:39:09PM +0200, Richard Weinberger wrote:
> Not sure if I understand this correctly, is the plan to support pmem also on UML?
> At least drivers/block/pmem.c cannot work on UML as it depends on io memory.
>
> Only x86 seems to have ARCH_HAS_NOCACHE_UACCESS, if UML would offer these methods
> what drivers need them? I'm still not sure where it would make sense on UML as
> uaccess on UML means ptrace() between host and guest process.
Ok, that makese snese. Dan, how about just moving the new pmem helpers
from cacheflush.h to a new asm/pmem.h to avoid having them dragged into
the um build?
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next prev parent reply other threads:[~2015-06-24 12:08 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-22 8:24 [PATCH v5 0/6] pmem api, generic ioremap_cache, and memremap Dan Williams
2015-06-22 8:24 ` [PATCH v5 1/6] arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead Dan Williams
2015-06-22 16:01 ` Christoph Hellwig
2015-06-22 8:24 ` [PATCH v5 2/6] arch: unify ioremap prototypes and macro aliases Dan Williams
2015-06-22 16:10 ` Christoph Hellwig
2015-06-22 17:12 ` Dan Williams
2015-06-23 10:07 ` Christoph Hellwig
2015-06-23 15:04 ` Dan Williams
2015-06-24 12:24 ` Christoph Hellwig
2015-06-30 22:57 ` Dan Williams
2015-07-01 6:23 ` Christoph Hellwig
2015-07-01 6:55 ` Geert Uytterhoeven
2015-07-01 6:59 ` Christoph Hellwig
2015-07-01 7:19 ` Geert Uytterhoeven
2015-07-01 7:28 ` Christoph Hellwig
2015-07-07 9:50 ` Luis R. Rodriguez
2015-07-07 10:13 ` Russell King - ARM Linux
2015-07-07 10:27 ` Geert Uytterhoeven
2015-07-07 16:07 ` Luis R. Rodriguez
2015-07-07 23:10 ` Toshi Kani
2015-07-09 1:40 ` Luis R. Rodriguez
2015-07-09 23:43 ` Toshi Kani
2015-07-01 8:09 ` Russell King - ARM Linux
2015-07-01 16:47 ` Dan Williams
2015-07-09 18:54 ` Luis R. Rodriguez
2015-06-22 8:24 ` [PATCH v5 3/6] cleanup IORESOURCE_CACHEABLE vs ioremap() Dan Williams
2015-06-22 8:24 ` [PATCH v5 4/6] devm: fix ioremap_cache() usage Dan Williams
2015-06-22 8:24 ` [PATCH v5 5/6] arch: introduce memremap_cache() and memremap_wt() Dan Williams
2015-06-22 8:24 ` [PATCH v5 6/6] arch, x86: pmem api for ensuring durability of persistent memory updates Dan Williams
2015-06-22 16:17 ` Christoph Hellwig
2015-06-22 17:51 ` Dan Williams
2015-06-23 10:09 ` Christoph Hellwig
2015-06-23 10:39 ` Richard Weinberger
2015-06-24 12:08 ` Christoph Hellwig [this message]
2015-06-24 12:35 ` Richard Weinberger
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