From: Takao Indoh <indou.takao@jp.fujitsu.com>
To: konrad@kernel.org
Cc: vgoyal@redhat.com, kexec@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
bhelgaas@google.com, hbabu@us.ibm.com,
ishii.hironobu@jp.fujitsu.com, martin.wilck@ts.fujitsu.com
Subject: Re: [RFC][PATCH] Reset PCIe devices to address DMA problem on kdump with iommu
Date: Wed, 19 Sep 2012 10:52:43 +0900 [thread overview]
Message-ID: <5059256B.2010708@jp.fujitsu.com> (raw)
In-Reply-To: <20120914200334.GA9041@phenom.dumpdata.com>
(2012/09/15 5:03), Konrad Rzeszutek Wilk wrote:
>> As to the boot parameter to enable this function, you suggested using
>> reset_devices. I found that on a certain platform resetting devices
>> caused PCIe error due to a hardware bug. Therefore I think we need
>> new parameter apart from reset_devices to disable this function on
>> such a machine.
>
> Wouldn't a DMI quirk be better for this? That way the second kernel
> internally would know not to do this.
That sounds good. I'll try it, thanks.
Thanks,
Takao Indoh
WARNING: multiple messages have this Message-ID (diff)
From: Takao Indoh <indou.takao@jp.fujitsu.com>
To: konrad@kernel.org
Cc: martin.wilck@ts.fujitsu.com, linux-pci@vger.kernel.org,
kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
hbabu@us.ibm.com, ishii.hironobu@jp.fujitsu.com,
bhelgaas@google.com, vgoyal@redhat.com
Subject: Re: [RFC][PATCH] Reset PCIe devices to address DMA problem on kdump with iommu
Date: Wed, 19 Sep 2012 10:52:43 +0900 [thread overview]
Message-ID: <5059256B.2010708@jp.fujitsu.com> (raw)
In-Reply-To: <20120914200334.GA9041@phenom.dumpdata.com>
(2012/09/15 5:03), Konrad Rzeszutek Wilk wrote:
>> As to the boot parameter to enable this function, you suggested using
>> reset_devices. I found that on a certain platform resetting devices
>> caused PCIe error due to a hardware bug. Therefore I think we need
>> new parameter apart from reset_devices to disable this function on
>> such a machine.
>
> Wouldn't a DMI quirk be better for this? That way the second kernel
> internally would know not to do this.
That sounds good. I'll try it, thanks.
Thanks,
Takao Indoh
_______________________________________________
kexec mailing list
kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec
next prev parent reply other threads:[~2012-09-19 1:58 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-03 11:24 [RFC][PATCH] Reset PCIe devices to address DMA problem on kdump with iommu Takao Indoh
2012-08-03 11:24 ` Takao Indoh
2012-08-03 11:46 ` Vivek Goyal
2012-08-03 11:46 ` Vivek Goyal
2012-08-06 4:30 ` Takao Indoh
2012-08-06 4:30 ` Takao Indoh
2012-08-06 20:39 ` Vivek Goyal
2012-08-06 20:39 ` Vivek Goyal
2012-08-07 9:02 ` Takao Indoh
2012-08-07 9:02 ` Takao Indoh
2012-09-05 11:09 ` Takao Indoh
2012-09-05 11:09 ` Takao Indoh
2012-09-10 2:34 ` Kaneshige, Kenji
2012-09-10 2:34 ` Kaneshige, Kenji
2012-09-10 6:35 ` Takao Indoh
2012-09-10 6:35 ` Takao Indoh
2012-09-11 11:52 ` Kaneshige, Kenji
2012-09-11 11:52 ` Kaneshige, Kenji
2012-09-10 14:36 ` Vivek Goyal
2012-09-10 14:36 ` Vivek Goyal
2012-09-11 10:32 ` Takao Indoh
2012-09-11 10:32 ` Takao Indoh
2012-09-11 14:43 ` Vivek Goyal
2012-09-11 14:43 ` Vivek Goyal
2012-09-12 9:00 ` Takao Indoh
2012-09-12 9:00 ` Takao Indoh
2012-09-14 15:48 ` Vivek Goyal
2012-09-14 15:48 ` Vivek Goyal
2012-09-24 11:22 ` Takao Indoh
2012-09-24 11:22 ` Takao Indoh
2012-09-14 20:03 ` Konrad Rzeszutek Wilk
2012-09-14 20:03 ` Konrad Rzeszutek Wilk
2012-09-19 1:52 ` Takao Indoh [this message]
2012-09-19 1:52 ` Takao Indoh
2012-09-21 17:57 ` Don Dutile
2012-09-21 17:57 ` Don Dutile
2012-09-24 11:12 ` Takao Indoh
2012-09-24 11:12 ` Takao Indoh
2012-08-06 4:09 ` Don Dutile
2012-08-06 4:09 ` Don Dutile
2012-08-06 4:45 ` Takao Indoh
2012-08-06 4:45 ` Takao Indoh
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=5059256B.2010708@jp.fujitsu.com \
--to=indou.takao@jp.fujitsu.com \
--cc=bhelgaas@google.com \
--cc=hbabu@us.ibm.com \
--cc=ishii.hironobu@jp.fujitsu.com \
--cc=kexec@lists.infradead.org \
--cc=konrad@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=martin.wilck@ts.fujitsu.com \
--cc=vgoyal@redhat.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.