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From: Dave Hansen <dave.hansen@intel.com>
To: Alexander Duyck <alexander.duyck@gmail.com>,
	mhocko@kernel.org, pavel.tatashin@microsoft.com,
	dan.j.williams@intel.com
Cc: linux-nvdimm@lists.01.org, LKML <linux-kernel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>,
	jglisse@redhat.com, Andrew Morton <akpm@linux-foundation.org>,
	Ingo Molnar <mingo@kernel.org>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: Re: [PATCH 1/4] mm: Provide kernel parameter to allow disabling page init poisoning
Date: Wed, 12 Sep 2018 09:43:27 -0700	[thread overview]
Message-ID: <68ccf46e-8c1e-c796-df35-afb5b295d6ea@intel.com> (raw)
In-Reply-To: <CAKgT0UeKnaY4XebOmtGozbjEJN4k3cwyhdBLPPJLc677-QU+Sw@mail.gmail.com>

On 09/12/2018 09:36 AM, Alexander Duyck wrote:
>>         vm_debug =      [KNL] Available with CONFIG_DEBUG_VM=y.
>>                         May slow down boot speed, especially on larger-
>>                         memory systems when enabled.
>>                         off: turn off all runtime VM debug features
>>                         all: turn on all debug features (default)
> This would introduce a significant amount of code change if we do it
> as a parameter that has control over everything.

Sure, but don't do that now.  Just put page poisoning under it now.
_______________________________________________
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Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm

WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave.hansen@intel.com>
To: Alexander Duyck <alexander.duyck@gmail.com>,
	mhocko@kernel.org, pavel.tatashin@microsoft.com,
	dan.j.williams@intel.com
Cc: linux-mm <linux-mm@kvack.org>,
	LKML <linux-kernel@vger.kernel.org>,
	linux-nvdimm@lists.01.org, dave.jiang@intel.com,
	Ingo Molnar <mingo@kernel.org>,
	jglisse@redhat.com, Andrew Morton <akpm@linux-foundation.org>,
	logang@deltatee.com,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: Re: [PATCH 1/4] mm: Provide kernel parameter to allow disabling page init poisoning
Date: Wed, 12 Sep 2018 09:43:27 -0700	[thread overview]
Message-ID: <68ccf46e-8c1e-c796-df35-afb5b295d6ea@intel.com> (raw)
In-Reply-To: <CAKgT0UeKnaY4XebOmtGozbjEJN4k3cwyhdBLPPJLc677-QU+Sw@mail.gmail.com>

On 09/12/2018 09:36 AM, Alexander Duyck wrote:
>>         vm_debug =      [KNL] Available with CONFIG_DEBUG_VM=y.
>>                         May slow down boot speed, especially on larger-
>>                         memory systems when enabled.
>>                         off: turn off all runtime VM debug features
>>                         all: turn on all debug features (default)
> This would introduce a significant amount of code change if we do it
> as a parameter that has control over everything.

Sure, but don't do that now.  Just put page poisoning under it now.

  reply	other threads:[~2018-09-12 16:43 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-10 23:43 [PATCH 0/4] Address issues slowing persistent memory initialization Alexander Duyck
2018-09-10 23:43 ` Alexander Duyck
2018-09-10 23:43 ` [PATCH 1/4] mm: Provide kernel parameter to allow disabling page init poisoning Alexander Duyck
2018-09-10 23:43   ` Alexander Duyck
2018-09-11  0:35   ` Alexander Duyck
2018-09-11  0:35     ` Alexander Duyck
2018-09-11 16:50   ` Dan Williams
2018-09-11 16:50     ` Dan Williams
2018-09-11 20:01     ` Alexander Duyck
2018-09-11 20:01       ` Alexander Duyck
2018-09-11 20:24       ` Dan Williams
2018-09-11 20:24         ` Dan Williams
2018-09-12 13:24   ` Pasha Tatashin
2018-09-12 14:10   ` Michal Hocko
2018-09-12 14:10     ` Michal Hocko
2018-09-12 14:49     ` Alexander Duyck
2018-09-12 14:49       ` Alexander Duyck
2018-09-12 15:23       ` Dave Hansen
2018-09-12 15:23         ` Dave Hansen
2018-09-12 16:36         ` Alexander Duyck
2018-09-12 16:43           ` Dave Hansen [this message]
2018-09-12 16:43             ` Dave Hansen
2018-09-10 23:43 ` [PATCH 2/4] mm: Create non-atomic version of SetPageReserved for init use Alexander Duyck
2018-09-10 23:43   ` Alexander Duyck
2018-09-12 13:28   ` Pasha Tatashin
2018-09-10 23:43 ` [PATCH 3/4] mm: Defer ZONE_DEVICE page initialization to the point where we init pgmap Alexander Duyck
2018-09-10 23:43   ` Alexander Duyck
2018-09-11  7:49   ` kbuild test robot
2018-09-11  7:49     ` kbuild test robot
2018-09-11  7:54   ` kbuild test robot
2018-09-11  7:54     ` kbuild test robot
2018-09-11 22:35   ` Dan Williams
2018-09-11 22:35     ` Dan Williams
2018-09-12  0:51     ` Alexander Duyck
2018-09-12  0:51       ` Alexander Duyck
2018-09-12  0:59       ` Dan Williams
2018-09-12  0:59         ` Dan Williams
2018-09-12 13:59   ` Pasha Tatashin
2018-09-12 15:48     ` Alexander Duyck
2018-09-12 15:48       ` Alexander Duyck
2018-09-12 15:54       ` Pasha Tatashin
2018-09-12 16:44         ` Alexander Duyck
2018-09-12 16:44           ` Alexander Duyck
2018-09-12 16:50       ` Dan Williams
2018-09-12 16:50         ` Dan Williams
2018-09-12 17:46         ` Pasha Tatashin
2018-09-12 19:11           ` Dan Williams
2018-09-12 19:11             ` Dan Williams
2018-09-10 23:44 ` [PATCH 4/4] nvdimm: Trigger the device probe on a cpu local to the device Alexander Duyck
2018-09-10 23:44   ` Alexander Duyck
2018-09-11  0:37   ` Alexander Duyck
2018-09-11  0:37     ` Alexander Duyck
2018-09-12  5:48   ` Dan Williams
2018-09-12  5:48     ` Dan Williams
2018-09-12 13:44   ` Pasha Tatashin

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