From: Baoquan He <bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
Cc: tom.vaden-VXdhtT5mjnY@public.gmane.org,
dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
kexec-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
lisa.mitchell-VXdhtT5mjnY@public.gmane.org,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
"Li, ZhenHua" <zhen-hual-VXdhtT5mjnY@public.gmane.org>,
doug.hatch-VXdhtT5mjnY@public.gmane.org,
ishii.hironobu-+CUm20s59erQFUHtdCDX3A@public.gmane.org,
linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
bhelgaas-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
li.zhang6-VXdhtT5mjnY@public.gmane.org,
dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
Subject: Re: [PATCH 0/5] iommu/vt-d: Fix crash dump failure caused by legacy DMA/IO
Date: Wed, 10 Dec 2014 16:46:52 +0800 [thread overview]
Message-ID: <20141210084652.GA25091@dhcp-16-105.nay.redhat.com> (raw)
In-Reply-To: <20141117133858.GA31920-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
Hi Joerg, ZhenHua,
This issue happens on AMD iommu too, do you have any plans or
thoughts on that?
Thanks
Baoquan
On 11/17/14 at 02:38pm, Joerg Roedel wrote:
> On Fri, Nov 14, 2014 at 02:27:44PM +0800, Li, ZhenHua wrote:
> > I am working following your directions:
> >
> > 1. If the VT-d driver finds the IOMMU enabled, it reuses its root entry
> > table, and do NOT disable-enable iommu. Other data will be copied.
> >
> > 2. When a device driver issues the first dma_map command for a
> > device, we assign a new and empty page-table, thus removing all
> > mappings from the old kernel for the device.
> >
> > Please let me know if I get something wrong.
>
> Yes, this sounds right. Happily waiting for patches :)
>
>
> Joerg
>
next prev parent reply other threads:[~2014-12-10 8:46 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-21 8:04 [PATCH 0/5] iommu/vt-d: Fix crash dump failure caused by legacy DMA/IO Li, Zhen-Hua
[not found] ` <1413878659-1383-1-git-send-email-zhen-hual-VXdhtT5mjnY@public.gmane.org>
2014-10-21 8:04 ` [PATCH 1/5] iommu/vt-d: Update iommu_attach_domain() and its callers Li, Zhen-Hua
2014-10-21 8:04 ` [PATCH 2/5] iommu/vt-d: Items required for kdump Li, Zhen-Hua
2014-10-21 8:04 ` [PATCH 3/5] iommu/vt-d: data types and functions used " Li, Zhen-Hua
2014-10-21 8:04 ` [PATCH 4/5] iommu/vt-d: Add domain-id functions Li, Zhen-Hua
2014-10-21 8:04 ` [PATCH 5/5] iommu/vt-d: enable kdump support in iommu module Li, Zhen-Hua
2014-10-22 10:05 ` [PATCH 0/5] iommu/vt-d: Fix crash dump failure caused by legacy DMA/IO Baoquan He
[not found] ` <20141022100525.GD9060-je1gSBvt1Tcx0jIIkfS+Ph/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2014-10-22 10:22 ` Li, Zhen-Hua
[not found] ` <57A76219-50C6-4594-91BE-87A6A18FFF43-VXdhtT5mjnY@public.gmane.org>
2014-10-22 10:27 ` Baoquan He
2014-11-06 1:31 ` Takao Indoh
[not found] ` <545ACF66.9050509-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2014-11-06 1:35 ` Li, ZhenHua
[not found] ` <545AD061.4000102-VXdhtT5mjnY@public.gmane.org>
2014-11-06 1:48 ` Takao Indoh
[not found] ` <545AD353.8060207-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2014-11-06 2:11 ` Li, ZhenHua
[not found] ` <545AD8D3.90709-VXdhtT5mjnY@public.gmane.org>
2014-11-06 7:51 ` Takao Indoh
[not found] ` <545B2885.8070009-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2014-11-06 8:06 ` Li, ZhenHua
[not found] ` <545B2C07.1070701-VXdhtT5mjnY@public.gmane.org>
2014-11-14 6:27 ` Li, ZhenHua
[not found] ` <5465A0E0.4020001-VXdhtT5mjnY@public.gmane.org>
2014-11-17 13:38 ` Joerg Roedel
[not found] ` <20141117133858.GA31920-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2014-12-01 6:31 ` Li, ZhenHua
2014-12-01 12:33 ` Joerg Roedel
2014-12-10 8:46 ` Baoquan He [this message]
[not found] ` <20141210084652.GA25091-je1gSBvt1TeLcxizHhUEZR/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2014-12-12 2:25 ` Li, ZhenHua
[not found] ` <548A521B.5020705-VXdhtT5mjnY@public.gmane.org>
2014-12-12 16:11 ` Joerg Roedel
[not found] ` <20141212161102.GC24292-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2014-12-15 9:13 ` Baoquan He
2014-12-15 9:16 ` Baoquan He
2014-10-27 7:29 ` Li, ZhenHua
[not found] ` <544DF46A.60109-VXdhtT5mjnY@public.gmane.org>
2014-10-27 10:44 ` Baoquan He
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