From: Michal Hocko <mhocko@kernel.org>
To: Dave Hansen <dave.hansen@intel.com>
Cc: Alexander Duyck <alexander.duyck@gmail.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
alexander.h.duyck@intel.com, pavel.tatashin@microsoft.com,
akpm@linux-foundation.org, mingo@kernel.org,
kirill.shutemov@linux.intel.com
Subject: Re: [PATCH v2 1/2] mm: Move page struct poisoning to CONFIG_DEBUG_VM_PAGE_INIT_POISON
Date: Thu, 6 Sep 2018 19:08:13 +0200 [thread overview]
Message-ID: <20180906170813.GF14951@dhcp22.suse.cz> (raw)
In-Reply-To: <33f39b37-9567-88a8-097d-a63df04c7732@intel.com>
On Thu 06-09-18 09:09:46, Dave Hansen wrote:
[...]
> Has anyone ever seen a single in-the-wild report from this mechanism?
Yes. See the list from Pavel. And I wouldn't push for it otherwise.
There are some questionable asserts with an overhead which is not
directly visible but it just adds up. This is different that it is one
time boot rare thing.
Anyway, I guess I have put all my arguments on the table. I will leave
the decision to you guys. If there is a strong concensus about a config
option, then I can live with that and will enable it.
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2018-09-06 17:08 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-05 21:13 [PATCH v2 0/2] Address issues slowing memory init Alexander Duyck
2018-09-05 21:13 ` [PATCH v2 1/2] mm: Move page struct poisoning to CONFIG_DEBUG_VM_PAGE_INIT_POISON Alexander Duyck
2018-09-05 21:22 ` Pasha Tatashin
2018-09-05 21:29 ` Alexander Duyck
2018-09-05 21:38 ` Pasha Tatashin
2018-09-05 21:54 ` Alexander Duyck
2018-09-05 21:34 ` Dave Hansen
2018-09-06 5:47 ` Michal Hocko
2018-09-06 14:59 ` Dave Hansen
2018-09-06 15:13 ` Michal Hocko
2018-09-06 15:41 ` Alexander Duyck
2018-09-06 16:12 ` Pasha Tatashin
2018-09-06 17:07 ` Dave Hansen
2018-09-06 18:08 ` Michal Hocko
2018-09-06 17:03 ` Michal Hocko
2018-09-06 17:23 ` Pasha Tatashin
2018-09-06 16:09 ` Dave Hansen
2018-09-06 17:08 ` Michal Hocko [this message]
2018-09-05 21:13 ` [PATCH v2 2/2] mm: Create non-atomic version of SetPageReserved for init use Alexander Duyck
2018-09-06 5:49 ` Michal Hocko
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