The following series implements a fix for:
A kdump problem about DMA that has been discussed for a long time.
That is, when a kernel panics and boots into the kdump kernel, DMA that was
started by the panicked kernel is not stopped before the kdump kernel is booted;
and the kdump kernel disables th
On Thu, 2014-04-24 at 18:36 -0600, Bill Sumner wrote:
>
> This patch set modifies the behavior of the Intel iommu in the crashdump
> kernel:
> 1. to accept the iommu hardware in an active state,
> 2. to leave the current translations in-place so that legacy DMA will continue
>using its curre
On Wed, Apr 30, 2014 at 11:49:33AM +0100, David Woodhouse wrote:
Hi David,
As you may know, Bill has retired and I am picking up this work.
I am still coming up to speed in this area so my goal is to understand
your concerns and research them as I dig through code and specs.
My apologizes for t
David,
I received the following email from Bill Sumner addressing your
earlier email.
Jerry
On Wed, 2014-04-30, David Woodhouse wrote:
Addressing a portion of the last question first:
>Was that option considered and discounted for some reason? It seems like
>it would make sense.
Considered ?
Hi David,
On Wed, Apr 30, 2014 at 11:49:33AM +0100, David Woodhouse wrote:
> There could be all kinds of existing mappings in the DMA page tables,
> and I'm not sure it's safe to preserve them. What prevents the crashdump
> kernel from trying to use any of the physical pages which are
> accessible
On Wed, Jul 02, 2014 at 03:32:59PM +0200, Joerg Roedel wrote:
> Hi David,
>
> On Wed, Apr 30, 2014 at 11:49:33AM +0100, David Woodhouse wrote:
> > There could be all kinds of existing mappings in the DMA page tables,
> > and I'm not sure it's safe to preserve them. What prevents the crashdump
> >
David, Joerg,
I plan to merge this patch set with 3.17 stable kernel, and split this
patch set into two :
1. The core part, including the changed functions, like [Patch 4/8],
[Patch 8/8].
2. For the formatting issues, like [Patch 1/8],[Patch 3/8], including
the changes for code formations, cre
Add Tom to CC list.
On 10/15/2014 04:10 PM, Li, ZhenHua wrote:
David, Joerg,
I plan to merge this patch set with 3.17 stable kernel, and split this
patch set into two :
1. The core part, including the changed functions, like [Patch 4/8],
[Patch 8/8].
2. For the formatting issues, like [Patch 1/8]
[-cc Bill, +cc Zhen-Hua, Eric, Tom, Jerry]
Hi Joerg,
I was looking at Zhen-Hua's recent patches, trying to figure out if I
need to do anything with them. Resetting devices in the old kernel
seems like a non-starter. Resetting devices in the new kernel, ...,
well, maybe. It seems ugly, and it s
Bjorn Helgaas writes:
> [-cc Bill, +cc Zhen-Hua, Eric, Tom, Jerry]
>
> Hi Joerg,
>
> I was looking at Zhen-Hua's recent patches, trying to figure out if I
> need to do anything with them. Resetting devices in the old kernel
> seems like a non-starter. Resetting devices in the new kernel, ...,
>
Need more time to read and think about these mails. I just want to
clarify one thing: Bill has left HP, and now I inherited his works.
That's why I sent an update of his patch
https://lkml.org/lkml/2014/10/21/134
On 10/22/2014 10:47 AM, Eric W. Biederman wrote:
Bjorn Helgaas writes:
Hi Bjorn,
On Tue, Oct 21, 2014 at 08:16:46PM -0600, Bjorn Helgaas wrote:
> I was looking at Zhen-Hua's recent patches, trying to figure out if I
> need to do anything with them. Resetting devices in the old kernel
> seems like a non-starter. Resetting devices in the new kernel, ...,
> well, mayb
On Wed, Oct 22, 2014 at 7:21 AM, Joerg Roedel wrote:
> Hi Bjorn,
>
> On Tue, Oct 21, 2014 at 08:16:46PM -0600, Bjorn Helgaas wrote:
>> I was looking at Zhen-Hua's recent patches, trying to figure out if I
>> need to do anything with them. Resetting devices in the old kernel
>> seems like a non-st
13 matches
Mail list logo
