From: Dave Hansen <dave.hansen@intel.com>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Hugh Dickins <hughd@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>, Jan Kara <jack@suse.cz>,
"H. Peter Anvin" <hpa@zytor.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
Tony Luck <tony.luck@intel.com>
Subject: Re: Dirty/Access bits vs. page content
Date: Fri, 25 Apr 2014 09:30:52 -0700 [thread overview]
Message-ID: <535A8DBC.4010202@intel.com> (raw)
In-Reply-To: <CA+55aFyUyD_BASjhig9OPerYcMrUgYJUfRLA9JyB_x7anV1d7Q@mail.gmail.com>
On 04/24/2014 04:46 PM, Linus Torvalds wrote:
> IOW, how about the attached patch that entirely replaces my previous
> two patches. DaveH - does this fix your test-case, while _not_
> introducing any new BUG_ON() triggers?
>
> I didn't test the patch, maybe I did something stupid. It compiles for
> me, but it only works for the HAVE_GENERIC_MMU_GATHER case, but
> introducing tlb_flush_mmu_tlbonly() and tlb_flush_mmu_free() into the
> non-generic cases should be trivial, since they really are just that
> old "tlb_flush_mmu()" function split up (the tlb_flush_mmu() function
> remains available for other non-forced flush users)
>
> So assuming this does work for DaveH, then the arm/ia64/um/whatever
> people would need to do those trivial transforms too, but it really
> shouldn't be too painful.
It looks happy on both my debugging kernel (which was triggering it
before) and the one without lockdep and all the things that normally
slow it down and change timing.
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next prev parent reply other threads:[~2014-04-25 16:30 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1398032742.19682.11.camel@pasglop>
[not found] ` <CA+55aFz1sK+PF96LYYZY7OB7PBpxZu-uNLWLvPiRz-tJsBqX3w@mail.gmail.com>
[not found] ` <1398054064.19682.32.camel@pasglop>
[not found] ` <1398057630.19682.38.camel@pasglop>
[not found] ` <CA+55aFwWHBtihC3w9E4+j4pz+6w7iTnYhTf4N3ie15BM9thxLQ@mail.gmail.com>
[not found] ` <53558507.9050703@zytor.com>
[not found] ` <CA+55aFxGm6J6N=4L7exLUFMr1_siNGHpK=wApd9GPCH1=63PPA@mail.gmail.com>
[not found] ` <53559F48.8040808@intel.com>
2014-04-22 0:31 ` Dirty/Access bits vs. page content Linus Torvalds
2014-04-22 0:44 ` Linus Torvalds
2014-04-22 5:15 ` Tony Luck
2014-04-22 14:55 ` Linus Torvalds
2014-04-22 7:34 ` Peter Zijlstra
2014-04-22 7:54 ` Peter Zijlstra
2014-04-22 21:36 ` Linus Torvalds
2014-04-22 21:46 ` Dave Hansen
2014-04-22 22:08 ` Linus Torvalds
2014-04-22 22:41 ` Dave Hansen
2014-04-23 2:44 ` Linus Torvalds
2014-04-23 3:08 ` Hugh Dickins
2014-04-23 4:23 ` Linus Torvalds
2014-04-23 6:14 ` Benjamin Herrenschmidt
2014-04-23 18:41 ` Jan Kara
2014-04-23 19:33 ` Linus Torvalds
2014-04-24 6:51 ` Peter Zijlstra
2014-04-24 18:40 ` Hugh Dickins
2014-04-24 19:45 ` Linus Torvalds
2014-04-24 20:02 ` Hugh Dickins
2014-04-24 23:46 ` Linus Torvalds
2014-04-25 1:37 ` Benjamin Herrenschmidt
2014-04-25 2:41 ` Benjamin Herrenschmidt
2014-04-25 2:46 ` Linus Torvalds
2014-04-25 2:50 ` H. Peter Anvin
2014-04-25 3:03 ` Linus Torvalds
2014-04-25 12:01 ` Hugh Dickins
2014-04-25 13:51 ` Peter Zijlstra
2014-04-25 19:41 ` Hugh Dickins
2014-04-26 18:07 ` Peter Zijlstra
2014-04-27 7:20 ` Peter Zijlstra
2014-04-27 12:20 ` Hugh Dickins
2014-04-27 19:33 ` Peter Zijlstra
2014-04-27 19:47 ` Linus Torvalds
2014-04-27 20:09 ` Hugh Dickins
2014-04-28 9:25 ` Peter Zijlstra
2014-04-28 10:14 ` Peter Zijlstra
2014-04-27 16:21 ` Linus Torvalds
2014-04-27 23:13 ` Benjamin Herrenschmidt
2014-04-25 16:54 ` Dave Hansen
2014-04-25 18:41 ` Hugh Dickins
2014-04-25 22:00 ` Dave Hansen
2014-04-26 3:11 ` Hugh Dickins
2014-04-26 3:48 ` Linus Torvalds
2014-04-25 17:56 ` Linus Torvalds
2014-04-25 19:13 ` Hugh Dickins
2014-04-25 16:30 ` Dave Hansen [this message]
2014-04-23 20:11 ` Hugh Dickins
2014-04-24 8:49 ` Jan Kara
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