All of lore.kernel.org
 help / color / mirror / Atom feed
From: Michal Hocko <mhocko@kernel.org>
To: Jerome Glisse <jglisse@redhat.com>
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
	Mel Gorman <mgorman@suse.de>, Vlastimil Babka <vbabka@suse.cz>,
	Andrea Arcangeli <aarcange@redhat.com>,
	Reza Arbab <arbab@linux.vnet.ibm.com>,
	Yasuaki Ishimatsu <yasu.isimatu@gmail.com>,
	qiuxishi@huawei.com, Kani Toshimitsu <toshi.kani@hpe.com>,
	slaoub@gmail.com, Joonsoo Kim <js1304@gmail.com>,
	Andi Kleen <ak@linux.intel.com>,
	Daniel Kiper <daniel.kiper@oracle.com>,
	Igor Mammedov <imammedo@redhat.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Fenghua Yu <fenghua.yu@intel.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Paul Mackerras <paulus@samba.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Tony Luck <tony.luck@intel.com>,
	Will Deacon <will.deacon@arm.com>
Subject: Re: [RFC PATCH 0/5] mm, memory_hotplug: allocate memmap from hotadded memory
Date: Thu, 27 Jul 2017 08:56:52 +0200	[thread overview]
Message-ID: <20170727065652.GE20970@dhcp22.suse.cz> (raw)
In-Reply-To: <20170726210657.GE21717@redhat.com>

On Wed 26-07-17 17:06:59, Jerome Glisse wrote:
[...]
> This does not seems to be an opt-in change ie if i am reading patch 3
> correctly if an altmap is not provided to __add_pages() you fallback
> to allocating from begining of zone. This will not work with HMM ie
> device private memory. So at very least i would like to see some way
> to opt-out of this. Maybe a new argument like bool forbid_altmap ?

OK, I see! I will think about how to make a sane api for that.

Thanks!
-- 
Michal Hocko
SUSE Labs

WARNING: multiple messages have this Message-ID (diff)
From: Michal Hocko <mhocko@kernel.org>
To: Jerome Glisse <jglisse@redhat.com>
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
	Mel Gorman <mgorman@suse.de>, Vlastimil Babka <vbabka@suse.cz>,
	Andrea Arcangeli <aarcange@redhat.com>,
	Reza Arbab <arbab@linux.vnet.ibm.com>,
	Yasuaki Ishimatsu <yasu.isimatu@gmail.com>,
	qiuxishi@huawei.com, Kani Toshimitsu <toshi.kani@hpe.com>,
	slaoub@gmail.com, Joonsoo Kim <js1304@gmail.com>,
	Andi Kleen <ak@linux.intel.com>,
	Daniel Kiper <daniel.kiper@oracle.com>,
	Igor Mammedov <imammedo@redhat.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Fenghua Yu <fenghua.yu@intel.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Paul Mackerras <paulus@samba.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Tony Luck <tony.luck@intel.com>,
	Will Deacon <will.deacon@arm.com>
Subject: Re: [RFC PATCH 0/5] mm, memory_hotplug: allocate memmap from hotadded memory
Date: Thu, 27 Jul 2017 08:56:52 +0200	[thread overview]
Message-ID: <20170727065652.GE20970@dhcp22.suse.cz> (raw)
In-Reply-To: <20170726210657.GE21717@redhat.com>

On Wed 26-07-17 17:06:59, Jerome Glisse wrote:
[...]
> This does not seems to be an opt-in change ie if i am reading patch 3
> correctly if an altmap is not provided to __add_pages() you fallback
> to allocating from begining of zone. This will not work with HMM ie
> device private memory. So at very least i would like to see some way
> to opt-out of this. Maybe a new argument like bool forbid_altmap ?

OK, I see! I will think about how to make a sane api for that.

Thanks!
-- 
Michal Hocko
SUSE Labs

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>

  reply	other threads:[~2017-07-27  6:57 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-26  8:33 [RFC PATCH 0/5] mm, memory_hotplug: allocate memmap from hotadded memory Michal Hocko
2017-07-26  8:33 ` Michal Hocko
2017-07-26  8:33 ` [RFC PATCH 1/5] mm, memory_hotplug: cleanup memory offline path Michal Hocko
2017-07-26  8:33   ` Michal Hocko
2017-07-26  8:33 ` [RFC PATCH 2/5] mm, arch: unify vmemmap_populate altmap handling Michal Hocko
2017-07-26  8:33   ` Michal Hocko
2017-07-31 12:40   ` Gerald Schaefer
2017-07-31 12:40     ` Gerald Schaefer
2017-07-31 12:55     ` Michal Hocko
2017-07-31 12:55       ` Michal Hocko
2017-07-31 14:27       ` Gerald Schaefer
2017-07-31 14:27         ` Gerald Schaefer
2017-07-31 14:36         ` Michal Hocko
2017-07-31 14:36           ` Michal Hocko
2017-07-26  8:33 ` [RFC PATCH 3/5] mm, memory_hotplug: allocate memmap from the added memory range for sparse-vmemmap Michal Hocko
2017-07-26  8:33   ` Michal Hocko
2017-07-26 11:45   ` Heiko Carstens
2017-07-26 11:45     ` Heiko Carstens
2017-07-26 11:49     ` Heiko Carstens
2017-07-26 11:49       ` Heiko Carstens
2017-07-26 12:30     ` Michal Hocko
2017-07-26 12:30       ` Michal Hocko
2017-07-26 17:20       ` Gerald Schaefer
2017-07-26 17:20         ` Gerald Schaefer
2017-07-28 11:26         ` Michal Hocko
2017-07-28 11:26           ` Michal Hocko
2017-07-28 17:47   ` Michal Hocko
2017-07-28 17:47     ` Michal Hocko
2017-07-26  8:33 ` [RFC PATCH 4/5] mm, sparse: complain about implicit altmap usage in vmemmap_populate Michal Hocko
2017-07-26  8:33   ` Michal Hocko
2017-07-26  8:33 ` [RFC PATCH 5/5] mm, sparse: rename kmalloc_section_memmap, __kfree_section_memmap Michal Hocko
2017-07-26  8:33   ` Michal Hocko
2017-07-26 11:39 ` [RFC PATCH 0/5] mm, memory_hotplug: allocate memmap from hotadded memory Michal Hocko
2017-07-26 11:39   ` Michal Hocko
2017-07-26 21:06 ` Jerome Glisse
2017-07-26 21:06   ` Jerome Glisse
2017-07-27  6:56   ` Michal Hocko [this message]
2017-07-27  6:56     ` Michal Hocko
2017-07-28 12:19     ` Michal Hocko
2017-07-28 12:19       ` Michal Hocko
2017-07-31 12:35       ` Gerald Schaefer
2017-07-31 12:35         ` Gerald Schaefer
2017-07-31 12:53         ` Michal Hocko
2017-07-31 12:53           ` Michal Hocko
2017-07-31 15:04           ` Gerald Schaefer
2017-07-31 15:04             ` Gerald Schaefer
2017-07-31 15:53             ` Michal Hocko
2017-07-31 15:53               ` Michal Hocko
2017-07-31 17:58               ` Gerald Schaefer
2017-07-31 17:58                 ` Gerald Schaefer
2017-08-01 11:30                 ` Igor Mammedov
2017-08-01 11:30                   ` Igor Mammedov
2017-08-01 12:27                 ` Michal Hocko
2017-08-01 12:27                   ` Michal Hocko
2017-07-28 12:01 ` Michal Hocko
2017-07-28 12:01   ` Michal Hocko

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20170727065652.GE20970@dhcp22.suse.cz \
    --to=mhocko@kernel.org \
    --cc=aarcange@redhat.com \
    --cc=ak@linux.intel.com \
    --cc=akpm@linux-foundation.org \
    --cc=arbab@linux.vnet.ibm.com \
    --cc=benh@kernel.crashing.org \
    --cc=catalin.marinas@arm.com \
    --cc=dan.j.williams@intel.com \
    --cc=daniel.kiper@oracle.com \
    --cc=fenghua.yu@intel.com \
    --cc=heiko.carstens@de.ibm.com \
    --cc=hpa@zytor.com \
    --cc=imammedo@redhat.com \
    --cc=jglisse@redhat.com \
    --cc=js1304@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=mgorman@suse.de \
    --cc=mingo@redhat.com \
    --cc=mpe@ellerman.id.au \
    --cc=paulus@samba.org \
    --cc=qiuxishi@huawei.com \
    --cc=schwidefsky@de.ibm.com \
    --cc=slaoub@gmail.com \
    --cc=tglx@linutronix.de \
    --cc=tony.luck@intel.com \
    --cc=toshi.kani@hpe.com \
    --cc=vbabka@suse.cz \
    --cc=vkuznets@redhat.com \
    --cc=will.deacon@arm.com \
    --cc=yasu.isimatu@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.