From: Tejun Heo <tj@kernel.org>
To: Toshi Kani <toshi.kani@hp.com>
Cc: Zhang Yanfei <zhangyanfei.yes@gmail.com>,
Tang Chen <tangchen@cn.fujitsu.com>,
konrad.wilk@oracle.com, robert.moore@intel.com,
lv.zheng@intel.com, rjw@sisk.pl, lenb@kernel.org,
tglx@linutronix.de, mingo@elte.hu, hpa@zytor.com,
akpm@linux-foundation.org, trenn@suse.de, yinghai@kernel.org,
jiang.liu@huawei.com, wency@cn.fujitsu.com, laijs@cn.fujitsu.com,
isimatu.yasuaki@jp.fujitsu.com, izumi.taku@jp.fujitsu.com,
mgorman@suse.de, minchan@kernel.org, mina86@mina86.com,
gong.chen@linux.intel.com, vasilis.liaskovitis@profitbricks.com,
lwoodman@redhat.com, riel@redhat.com, jweiner@redhat.com,
prarit@redhat.com, zhangyanfei@cn.fujitsu.com,
yanghy@cn.fujitsu.com, x86@kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-acpi@vger.kernel.org
Subject: Re: [PATCH 0/8] x86, acpi: Move acpi_initrd_override() earlier.
Date: Fri, 23 Aug 2013 12:24:44 -0400 [thread overview]
Message-ID: <20130823162444.GL3277@htj.dyndns.org> (raw)
In-Reply-To: <1377274448.10300.777.camel@misato.fc.hp.com>
Hello,
On Fri, Aug 23, 2013 at 10:14:08AM -0600, Toshi Kani wrote:
> I still think acpi table info should be available earlier, but I do not
> think I can convince you on this. This can be religious debate.
I'm curious. If there aren't substantial enough benefits, why would
you still want to pull it earlier when it brings in things like initrd
override and crafting the code carefully so that it's safe to execute
it from different address modes and so on? Please note that x86 is
not ia64. The early environment is completely different not only
technically but also in its diversity and suckiness. It wasn't too
long ago that vendors were screwing up ACPI left and right. It has
been getting better but there's a reason why, for example, we still
consider e820 to be the authoritative information over ACPI.
Thanks.
--
tejun
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WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: Toshi Kani <toshi.kani@hp.com>
Cc: Zhang Yanfei <zhangyanfei.yes@gmail.com>,
Tang Chen <tangchen@cn.fujitsu.com>,
konrad.wilk@oracle.com, robert.moore@intel.com,
lv.zheng@intel.com, rjw@sisk.pl, lenb@kernel.org,
tglx@linutronix.de, mingo@elte.hu, hpa@zytor.com,
akpm@linux-foundation.org, trenn@suse.de, yinghai@kernel.org,
jiang.liu@huawei.com, wency@cn.fujitsu.com, laijs@cn.fujitsu.com,
isimatu.yasuaki@jp.fujitsu.com, izumi.taku@jp.fujitsu.com,
mgorman@suse.de, minchan@kernel.org, mina86@mina86.com,
gong.chen@linux.intel.com, vasilis.liaskovitis@profitbricks.com,
lwoodman@redhat.com, riel@redhat.com, jweiner@redhat.com,
prarit@redhat.com, zhangyanfei@cn.fujitsu.com,
yanghy@cn.fujitsu.com, x86@kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-acpi@vger.kernel.org
Subject: Re: [PATCH 0/8] x86, acpi: Move acpi_initrd_override() earlier.
Date: Fri, 23 Aug 2013 12:24:44 -0400 [thread overview]
Message-ID: <20130823162444.GL3277@htj.dyndns.org> (raw)
In-Reply-To: <1377274448.10300.777.camel@misato.fc.hp.com>
Hello,
On Fri, Aug 23, 2013 at 10:14:08AM -0600, Toshi Kani wrote:
> I still think acpi table info should be available earlier, but I do not
> think I can convince you on this. This can be religious debate.
I'm curious. If there aren't substantial enough benefits, why would
you still want to pull it earlier when it brings in things like initrd
override and crafting the code carefully so that it's safe to execute
it from different address modes and so on? Please note that x86 is
not ia64. The early environment is completely different not only
technically but also in its diversity and suckiness. It wasn't too
long ago that vendors were screwing up ACPI left and right. It has
been getting better but there's a reason why, for example, we still
consider e820 to be the authoritative information over ACPI.
Thanks.
--
tejun
next prev parent reply other threads:[~2013-08-23 16:24 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-21 10:15 [PATCH 0/8] x86, acpi: Move acpi_initrd_override() earlier Tang Chen
2013-08-21 10:15 ` Tang Chen
2013-08-21 10:15 ` [PATCH 1/8] x86: Make get_ramdisk_{image|size}() global Tang Chen
2013-08-21 10:15 ` Tang Chen
2013-08-21 10:15 ` [PATCH 2/8] x86, microcode: Use get_ramdisk_{image|size}() in microcode handling Tang Chen
2013-08-21 10:15 ` Tang Chen
2013-08-21 10:15 ` [PATCH 3/8] x86, acpi: Move table_sigs[] to stack Tang Chen
2013-08-21 10:15 ` Tang Chen
2013-08-21 10:15 ` [PATCH 4/8] x86, acpi, brk: Extend BRK 256KB to store acpi override tables Tang Chen
2013-08-21 10:15 ` Tang Chen
2013-08-21 10:15 ` [PATCH 5/8] x86, brk: Make extend_brk() available with va/pa Tang Chen
2013-08-21 10:15 ` Tang Chen
2013-08-21 12:26 ` Konrad Rzeszutek Wilk
2013-08-21 12:26 ` Konrad Rzeszutek Wilk
2013-08-21 12:35 ` H. Peter Anvin
2013-08-21 12:35 ` H. Peter Anvin
2013-08-21 14:42 ` Konrad Rzeszutek Wilk
2013-08-21 14:42 ` Konrad Rzeszutek Wilk
2013-08-21 15:04 ` H. Peter Anvin
2013-08-21 15:04 ` H. Peter Anvin
2013-08-21 10:15 ` [PATCH 6/8] x86, acpi: Make acpi_initrd_override() available with va or pa Tang Chen
2013-08-21 10:15 ` Tang Chen
2013-08-21 10:15 ` [PATCH 7/8] x86, acpi, brk: Make early_alloc_acpi_override_tables_buf() available with va/pa Tang Chen
2013-08-21 10:15 ` Tang Chen
2013-08-21 10:15 ` [PATCH 8/8] x86, acpi: Do acpi_initrd_override() earlier in head_32.S/head64.c Tang Chen
2013-08-21 10:15 ` Tang Chen
2013-08-21 10:42 ` [PATCH 0/8] x86, acpi: Move acpi_initrd_override() earlier Tang Chen
2013-08-21 10:42 ` Tang Chen
2013-08-21 13:06 ` Tejun Heo
2013-08-21 13:06 ` Tejun Heo
2013-08-21 15:00 ` Zhang Yanfei
2013-08-21 15:00 ` Zhang Yanfei
2013-08-21 15:36 ` Tejun Heo
2013-08-21 15:36 ` Tejun Heo
2013-08-21 19:31 ` Toshi Kani
2013-08-21 19:31 ` Toshi Kani
2013-08-21 19:54 ` Tejun Heo
2013-08-21 19:54 ` Tejun Heo
2013-08-21 20:29 ` Toshi Kani
2013-08-21 20:29 ` Toshi Kani
2013-08-21 20:40 ` Tejun Heo
2013-08-21 20:40 ` Tejun Heo
2013-08-21 22:36 ` Toshi Kani
2013-08-21 22:36 ` Toshi Kani
2013-08-22 3:32 ` Tejun Heo
2013-08-22 3:32 ` Tejun Heo
2013-08-22 15:52 ` Toshi Kani
2013-08-22 15:52 ` Toshi Kani
2013-08-22 18:31 ` Tejun Heo
2013-08-22 18:31 ` Tejun Heo
2013-08-22 19:39 ` Zhang Yanfei
2013-08-22 19:39 ` Zhang Yanfei
2013-08-22 19:45 ` Tejun Heo
2013-08-22 19:45 ` Tejun Heo
2013-08-22 20:11 ` Toshi Kani
2013-08-22 20:11 ` Toshi Kani
2013-08-22 20:21 ` Tejun Heo
2013-08-22 20:21 ` Tejun Heo
2013-08-22 20:35 ` Tejun Heo
2013-08-22 20:35 ` Tejun Heo
2013-08-22 21:06 ` Toshi Kani
2013-08-22 21:06 ` Toshi Kani
2013-08-22 21:21 ` Tejun Heo
2013-08-22 21:21 ` Tejun Heo
2013-08-22 22:17 ` Toshi Kani
2013-08-22 22:17 ` Toshi Kani
2013-08-23 13:04 ` Tejun Heo
2013-08-23 13:04 ` Tejun Heo
2013-08-23 13:08 ` H. Peter Anvin
2013-08-23 13:08 ` H. Peter Anvin
2013-08-23 14:19 ` Tejun Heo
2013-08-23 14:19 ` Tejun Heo
2013-08-23 14:24 ` H. Peter Anvin
2013-08-23 14:24 ` H. Peter Anvin
2013-08-23 14:24 ` H. Peter Anvin
2013-08-23 14:35 ` Tejun Heo
2013-08-23 14:35 ` Tejun Heo
2013-08-23 14:57 ` Tejun Heo
2013-08-23 14:57 ` Tejun Heo
2013-08-23 16:14 ` Toshi Kani
2013-08-23 16:14 ` Toshi Kani
2013-08-23 16:24 ` Tejun Heo [this message]
2013-08-23 16:24 ` Tejun Heo
2013-08-23 17:13 ` Toshi Kani
2013-08-23 17:13 ` Toshi Kani
2013-08-23 17:29 ` Zhang Yanfei
2013-08-23 17:29 ` Zhang Yanfei
2013-08-23 16:54 ` Zhang Yanfei
2013-08-23 16:54 ` Zhang Yanfei
2013-08-23 18:18 ` Yinghai Lu
2013-08-23 18:18 ` Yinghai Lu
2013-08-23 18:25 ` H. Peter Anvin
2013-08-23 20:08 ` Yinghai Lu
2013-08-23 20:30 ` Russ Anderson
2013-08-23 20:48 ` Yinghai Lu
2013-08-23 21:50 ` chen tang
2013-08-23 21:52 ` Moore, Robert
2013-08-23 22:05 ` Yinghai Lu
2013-08-23 22:08 ` Yinghai Lu
2013-08-23 22:40 ` chen tang
2013-08-23 23:04 ` Yinghai Lu
2013-08-24 2:41 ` Russ Anderson
2013-08-23 20:33 ` chen tang
2013-08-23 20:33 ` chen tang
2013-08-23 21:08 ` Yinghai Lu
2013-08-23 21:08 ` Yinghai Lu
2013-08-23 22:27 ` chen tang
2013-08-23 22:27 ` chen tang
2013-08-23 18:29 ` Toshi Kani
2013-08-23 18:29 ` Toshi Kani
2013-08-23 21:37 ` chen tang
2013-08-23 21:37 ` chen tang
2013-08-23 21:52 ` Tejun Heo
2013-08-23 21:52 ` Tejun Heo
2013-08-23 23:56 ` chen tang
2013-08-23 23:56 ` chen tang
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