linux-kernel - Re: [PATCH v7 0/5] Reset PCIe devices to address DMA problem on kdump with iommu

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Message-ID: <CAE9FiQVaqXMfju5j7qBsk+g=RpES-adBBdrDcnkW=YQTQOfugQ@mail.gmail.com>
Date:	Fri, 21 Dec 2012 08:19:05 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	MUNEDA Takahiro <muneda.takahiro@...fujitsu.com>,
	Thomas Renninger <trenn@...e.de>
Cc:	Takao Indoh <indou.takao@...fujitsu.com>,
	linux-pci@...r.kernel.org, x86@...nel.org,
	linux-kernel@...r.kernel.org, andi@...stfloor.org,
	tokunaga.keiich@...fujitsu.com, kexec@...ts.infradead.org,
	hbabu@...ibm.com, mingo@...hat.com, ddutile@...hat.com,
	vgoyal@...hat.com, ishii.hironobu@...fujitsu.com, hpa@...or.com,
	bhelgaas@...gle.com, tglx@...utronix.de, khalid@...ehiking.org
Subject: Re: [PATCH v7 0/5] Reset PCIe devices to address DMA problem on kdump
 with iommu

On Fri, Nov 30, 2012 at 7:49 AM, MUNEDA Takahiro
<muneda.takahiro@...fujitsu.com> wrote:
> On Tue, 27 Nov 2012 09:42:20 +0900 (JST),
> Takao Indoh <indou.takao@...fujitsu.com> wrote:
>
>> These patches reset PCIe devices at boot time to address DMA problem on
>> kdump with iommu. When "reset_devices" is specified, a hot reset is
>> triggered on each PCIe root port and downstream port to reset its
>> downstream endpoint.

ThomasR, Can you check if this one help your test case about interrupt ?

Yinghai
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