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Date:	Fri, 6 Nov 2015 16:51:59 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Dan Williams <dan.j.williams@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>
Cc:	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	Jeff Moyer <jmoyer@...hat.com>,
	linux-nvdimm <linux-nvdimm@...1.01.org>, X86 ML <x86@...nel.org>,
	Dave Chinner <david@...morbit.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>, Jan Kara <jack@...e.com>
Subject: Re: [PATCH 0/2] "big hammer" for DAX msync/fsync correctness

On 11/06/15 15:17, Dan Williams wrote:
>>
>> Is it really required to do that on all cpus?
> 
> I believe it is, but I'll double check.
> 

It's required on all CPUs on which the DAX memory may have been dirtied.
 This is similar to the way we flush TLBs.

	-hpa


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