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From: Tang Chen <tangchen@cn.fujitsu.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	Toshi Kani <toshi.kani@hp.com>, Tejun Heo <tj@kernel.org>,
	Tang Chen <imtangchen@gmail.com>,
	Bob Moore <robert.moore@intel.com>, Lv Zheng <lv.zheng@intel.com>,
	"Rafael J. Wysocki" <rjw@sisk.pl>, Len Brown <lenb@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	Thomas Renninger <trenn@suse.de>,
	Jiang Liu <jiang.liu@huawei.com>,
	Wen Congyang <wency@cn.fujitsu.com>,
	Lai Jiangshan <laijs@cn.fujitsu.com>,
	Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>,
	Taku Izumi <izumi.taku@jp.fujitsu.com>,
	Mel Gorman <mgorman@suse.de>, Minchan Kim <minchan@kernel.org>,
	"mina86@mina86.com" <mina86@mina86.com>,
	gong.chen@linux.intel.com
Subject: Re: [PATCH part5 0/7] Arrange hotpluggable memory as ZONE_MOVABLE.
Date: Mon, 19 Aug 2013 11:07:18 +0800	[thread overview]
Message-ID: <52118BE6.8060903@cn.fujitsu.com> (raw)
In-Reply-To: <CAE9FiQX0cxa4+2vtFpuCbH+Tb2YsMZTRRUwynbf_ogF8LN6Smg@mail.gmail.com>

On 08/16/2013 12:21 PM, Yinghai Lu wrote:
......
>> By "put acpi_initrd_override in BRK", do you mean increase the BRK by
>> default ?
>
> Peter,
>
> Do you agree on extending BRK 256k to put copied override acpi tables?
>
> then we can find and copy them early in
> arch/x86/kernel/head64.c::x86_64_start_kernel() or
> arch/x86/kernel/head_32.S.

Hi Yinghai,

If we use BRK to store acpi tables, we don't need to setup page tables.
If we do acpi_initrd_override() in setup_arch(), after early_ioremap is
available, we don't need to split it into find & copy. It would be much
easier.

Can you agree on doing acpi_initrd_override() in setup_arch() ?  Is it
too late for xen ?

Thanks.


--
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WARNING: multiple messages have this Message-ID (diff)
From: Tang Chen <tangchen@cn.fujitsu.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	Toshi Kani <toshi.kani@hp.com>, Tejun Heo <tj@kernel.org>,
	Tang Chen <imtangchen@gmail.com>,
	Bob Moore <robert.moore@intel.com>, Lv Zheng <lv.zheng@intel.com>,
	"Rafael J. Wysocki" <rjw@sisk.pl>, Len Brown <lenb@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	Thomas Renninger <trenn@suse.de>,
	Jiang Liu <jiang.liu@huawei.com>,
	Wen Congyang <wency@cn.fujitsu.com>,
	Lai Jiangshan <laijs@cn.fujitsu.com>,
	Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>,
	Taku Izumi <izumi.taku@jp.fujitsu.com>,
	Mel Gorman <mgorman@suse.de>, Minchan Kim <minchan@kernel.org>,
	"mina86@mina86.com" <mina86@mina86.com>,
	"gong.chen@linux.intel.com" <gong.chen@linux.intel.com>,
	Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com>,
	"lwoodman@redhat.com" <lwoodman@redhat.com>,
	Rik van Riel <riel@redhat.com>,
	"jweiner@redhat.com" <jweiner@redhat.com>,
	Prarit Bhargava <prarit@redhat.com>,
	Zhang Yanfei <zhangyanfei@cn.fujitsu.com>,
	"yanghy@cn.fujitsu.com" <yanghy@cn.fujitsu.com>,
	the arch/x86 maintainers <x86@kernel.org>,
	"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux MM <linux-mm@kvack.org>,
	ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
	"Luck, Tony (tony.luck@intel.com)" <tony.luck@intel.com>
Subject: Re: [PATCH part5 0/7] Arrange hotpluggable memory as ZONE_MOVABLE.
Date: Mon, 19 Aug 2013 11:07:18 +0800	[thread overview]
Message-ID: <52118BE6.8060903@cn.fujitsu.com> (raw)
In-Reply-To: <CAE9FiQX0cxa4+2vtFpuCbH+Tb2YsMZTRRUwynbf_ogF8LN6Smg@mail.gmail.com>

On 08/16/2013 12:21 PM, Yinghai Lu wrote:
......
>> By "put acpi_initrd_override in BRK", do you mean increase the BRK by
>> default ?
>
> Peter,
>
> Do you agree on extending BRK 256k to put copied override acpi tables?
>
> then we can find and copy them early in
> arch/x86/kernel/head64.c::x86_64_start_kernel() or
> arch/x86/kernel/head_32.S.

Hi Yinghai,

If we use BRK to store acpi tables, we don't need to setup page tables.
If we do acpi_initrd_override() in setup_arch(), after early_ioremap is
available, we don't need to split it into find & copy. It would be much
easier.

Can you agree on doing acpi_initrd_override() in setup_arch() ?  Is it
too late for xen ?

Thanks.


--
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:[~2013-08-19  3:07 UTC|newest]

Thread overview: 165+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-08 10:16 [PATCH part5 0/7] Arrange hotpluggable memory as ZONE_MOVABLE Tang Chen
2013-08-08 10:16 ` Tang Chen
2013-08-08 10:16 ` [PATCH part5 1/7] x86: get pg_data_t's memory from other node Tang Chen
2013-08-08 10:16   ` Tang Chen
2013-08-12 14:39   ` Tejun Heo
2013-08-12 14:39     ` Tejun Heo
2013-08-12 15:12     ` Tang Chen
2013-08-12 15:12       ` Tang Chen
2013-08-08 10:16 ` [PATCH part5 2/7] x86, numa, mem_hotplug: Skip all the regions the kernel resides in Tang Chen
2013-08-08 10:16   ` Tang Chen
2013-08-08 10:16 ` [PATCH part5 3/7] memblock, numa: Introduce flag into memblock Tang Chen
2013-08-08 10:16   ` Tang Chen
2013-08-08 10:16 ` [PATCH part5 4/7] memblock, mem_hotplug: Introduce MEMBLOCK_HOTPLUG flag to mark hotpluggable regions Tang Chen
2013-08-08 10:16   ` Tang Chen
2013-08-08 10:16 ` [PATCH part5 5/7] memblock, mem_hotplug: Make memblock skip hotpluggable regions by default Tang Chen
2013-08-08 10:16   ` Tang Chen
2013-08-14 21:54   ` Naoya Horiguchi
2013-08-14 21:54     ` Naoya Horiguchi
2013-08-15  5:15     ` Tang Chen
2013-08-15  5:15       ` Tang Chen
2013-08-08 10:16 ` [PATCH part5 6/7] mem-hotplug: Introduce movablenode boot option to {en|dis}able using SRAT Tang Chen
2013-08-08 10:16   ` Tang Chen
2013-08-08 10:16 ` [PATCH part5 7/7] x86, numa, acpi, memory-hotplug: Make movablenode have higher priority Tang Chen
2013-08-08 10:16   ` Tang Chen
2013-08-09 16:32 ` [PATCH part5 0/7] Arrange hotpluggable memory as ZONE_MOVABLE Tejun Heo
2013-08-09 16:32   ` Tejun Heo
2013-08-12  6:33   ` Tang Chen
2013-08-12  8:54   ` Tang Chen
2013-08-12  8:54     ` Tang Chen
2013-08-12 14:50 ` Tejun Heo
2013-08-12 14:50   ` Tejun Heo
2013-08-12 15:14   ` H. Peter Anvin
2013-08-12 15:14     ` H. Peter Anvin
2013-08-12 15:23     ` Tejun Heo
2013-08-12 15:23       ` Tejun Heo
2013-08-12 16:29       ` Tang Chen
2013-08-12 16:29         ` Tang Chen
2013-08-12 16:46         ` Tejun Heo
2013-08-12 16:46           ` Tejun Heo
2013-08-12 18:23           ` Tang Chen
2013-08-12 18:23             ` Tang Chen
2013-08-12 20:20             ` Tejun Heo
2013-08-12 20:20               ` Tejun Heo
2013-08-12 20:49               ` Luck, Tony
2013-08-12 20:49                 ` Luck, Tony
2013-08-12 20:54                 ` Tejun Heo
2013-08-12 20:54                   ` Tejun Heo
2013-08-12 20:57                   ` H. Peter Anvin
2013-08-12 20:57                     ` H. Peter Anvin
2013-08-12 21:06                     ` Yinghai Lu
2013-08-12 21:06                       ` Yinghai Lu
2013-08-12 21:08                       ` Tejun Heo
2013-08-12 21:08                         ` Tejun Heo
2013-08-12 21:12                         ` H. Peter Anvin
2013-08-12 21:12                           ` H. Peter Anvin
2013-08-12 21:14                           ` Tejun Heo
2013-08-12 21:14                             ` Tejun Heo
2013-08-12 21:11                       ` H. Peter Anvin
2013-08-12 21:11                         ` H. Peter Anvin
2013-08-12 21:11                   ` Luck, Tony
2013-08-12 21:11                     ` Luck, Tony
2013-08-12 21:25                     ` Yinghai Lu
2013-08-12 21:25                       ` Yinghai Lu
2013-08-12 21:28                       ` H. Peter Anvin
2013-08-12 21:28                         ` H. Peter Anvin
2013-08-13  5:14                     ` H. Peter Anvin
2013-08-13  5:14                       ` H. Peter Anvin
2013-08-13  6:14           ` Tang Chen
2013-08-13  6:14             ` Tang Chen
2013-08-13  9:56             ` Tang Chen
2013-08-13  9:56               ` Tang Chen
2013-08-13 14:38               ` Tejun Heo
2013-08-13 14:38                 ` Tejun Heo
2013-08-13 22:33               ` Yinghai Lu
2013-08-13 22:33                 ` Yinghai Lu
2013-08-14  1:22                 ` Tang Chen
2013-08-14  1:22                   ` Tang Chen
2013-08-15 19:06                   ` Toshi Kani
2013-08-15 19:06                     ` Toshi Kani
2013-08-15 20:28                     ` Yinghai Lu
2013-08-15 20:28                       ` Yinghai Lu
2013-08-16  2:08                       ` Tang Chen
2013-08-16  2:08                         ` Tang Chen
2013-08-16  4:21                         ` Yinghai Lu
2013-08-16  4:21                           ` Yinghai Lu
2013-08-19  3:07                           ` Tang Chen [this message]
2013-08-19  3:07                             ` Tang Chen
2013-08-19  3:28                             ` Yinghai Lu
2013-08-19  3:28                               ` Yinghai Lu
2013-08-15  8:42                 ` Tang Chen
2013-08-15  8:42                   ` Tang Chen
2013-08-15 12:19                   ` Tejun Heo
2013-08-15 12:19                     ` Tejun Heo
2013-08-15 12:44                     ` Tang Chen
2013-08-15 12:44                       ` Tang Chen
2013-08-15 12:49                       ` Tejun Heo
2013-08-15 12:49                         ` Tejun Heo
2013-08-15 12:52                         ` Tang Chen
2013-08-15 12:52                           ` Tang Chen
2013-08-15 14:37                       ` Yinghai Lu
2013-08-15 14:37                         ` Yinghai Lu
2013-08-15 14:45                         ` Tejun Heo
2013-08-15 14:45                           ` Tejun Heo
2013-08-15 15:05                           ` Yinghai Lu
2013-08-15 15:05                             ` Yinghai Lu
2013-08-15 15:10                             ` Tejun Heo
2013-08-15 15:10                               ` Tejun Heo
2013-08-15 19:49                               ` Toshi Kani
2013-08-15 19:49                                 ` Toshi Kani
2013-08-15 19:08                             ` Luck, Tony
2013-08-15 19:08                               ` Luck, Tony
2013-08-15 19:34                               ` Yinghai Lu
2013-08-15 19:34                                 ` Yinghai Lu
2013-08-15 14:35                   ` Yinghai Lu
2013-08-15 14:35                     ` Yinghai Lu
2013-08-16  1:16                     ` Tang Chen
2013-08-16  1:16                       ` Tang Chen
2013-08-12 15:41   ` Tang Chen
2013-08-12 15:41     ` Tang Chen
2013-08-12 15:46     ` Tejun Heo
2013-08-12 15:46       ` Tejun Heo
2013-08-12 16:19       ` Tang Chen
2013-08-12 16:19         ` Tang Chen
2013-08-12 16:22         ` Tejun Heo
2013-08-12 16:22           ` Tejun Heo
2013-08-12 17:01           ` Tang Chen
2013-08-12 17:01             ` Tang Chen
2013-08-12 17:23             ` H. Peter Anvin
2013-08-12 17:23               ` H. Peter Anvin
2013-08-14 18:22               ` KOSAKI Motohiro
2013-08-14 18:22                 ` KOSAKI Motohiro
2013-08-12 18:07             ` Tejun Heo
2013-08-12 18:07               ` Tejun Heo
2013-08-14 18:15               ` KOSAKI Motohiro
2013-08-14 18:15                 ` KOSAKI Motohiro
2013-08-14 18:23                 ` Tejun Heo
2013-08-14 18:23                   ` Tejun Heo
2013-08-14 19:40                   ` KOSAKI Motohiro
2013-08-14 19:40                     ` KOSAKI Motohiro
2013-08-14 19:55                     ` Tejun Heo
2013-08-14 19:55                       ` Tejun Heo
2013-08-14 20:29                       ` KOSAKI Motohiro
2013-08-14 20:29                         ` KOSAKI Motohiro
2013-08-14 20:30                         ` H. Peter Anvin
2013-08-14 20:30                           ` H. Peter Anvin
2013-08-14 20:35                         ` Tejun Heo
2013-08-14 20:35                           ` Tejun Heo
2013-08-14 21:17                           ` KOSAKI Motohiro
2013-08-14 21:17                             ` KOSAKI Motohiro
2013-08-14 21:36                             ` Tejun Heo
2013-08-14 21:36                               ` Tejun Heo
2013-08-15  1:08                               ` KOSAKI Motohiro
2013-08-15  1:08                                 ` KOSAKI Motohiro
2013-08-15  1:21                                 ` Tejun Heo
2013-08-15  1:21                                   ` Tejun Heo
2013-08-15  1:33                                   ` Tejun Heo
2013-08-15  1:33                                     ` Tejun Heo
2013-08-15  1:44                                     ` KOSAKI Motohiro
2013-08-15  1:44                                       ` KOSAKI Motohiro
2013-08-15  2:22                                       ` Tejun Heo
2013-08-15  2:22                                         ` Tejun Heo
2013-08-15  1:38                                   ` KOSAKI Motohiro
2013-08-15  1:38                                     ` KOSAKI Motohiro
2013-08-15  1:51                                     ` Tejun Heo
2013-08-15  1:51                                       ` Tejun Heo

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