linux-kernel - Re: [PATCH 1/8] pmem: Initial version of persistent memory driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CALCETrVt9KiWsT37Z_90gBREK1NoSJ2ruT48uv-7QWumYz+TNg@mail.gmail.com>
Date:	Wed, 18 Mar 2015 11:06:46 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Boaz Harrosh <boaz@...xistor.com>
Cc:	Matthew Wilcox <willy@...ux.intel.com>,
	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	X86 ML <x86@...nel.org>, Thomas Gleixner <tglx@...utronix.de>,
	Dan Williams <dan.j.williams@...el.com>,
	Ingo Molnar <mingo@...hat.com>,
	"Roger C. Pao" <rcpao.enmotus@...il.com>,
	linux-nvdimm <linux-nvdimm@...ts.01.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Christoph Hellwig <hch@...radead.org>
Subject: Re: [PATCH 1/8] pmem: Initial version of persistent memory driver

On Mar 9, 2015 8:20 AM, "Boaz Harrosh" <boaz@...xistor.com> wrote:
>
> On 03/06/2015 01:03 AM, Andy Lutomirski wrote:
> <>
> >
> > I think it would be nice to have control over the caching mode.
> > Depending on the application, WT or UC could make more sense.
> >
>
> Patches are welcome. say
>         map=sss@aaa:WT,sss@aaa:CA, ...
>
> But for us, with direct_access(), all benchmarks show a slight advantage
> for the cached mode.

I'm sure cached is faster.  The question is: who flushes the cache?

--Andy
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/