Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-05-07 Thread Tim Deegan
At 16:31 +0100 on 05 May (1430843498), Jan Beulich wrote: On 05.05.15 at 17:17, t...@xen.org wrote: At 16:10 +0100 on 05 May (1430842206), Jan Beulich wrote: From what I can tell (and assuming other code works correctly) the fact that arch_iommu_populate_page_table() sets d-need_iommu to

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-05-05 Thread Jan Beulich
On 05.05.15 at 17:17, t...@xen.org wrote: At 16:10 +0100 on 05 May (1430842206), Jan Beulich wrote: From what I can tell (and assuming other code works correctly) the fact that arch_iommu_populate_page_table() sets d-need_iommu to -1 first thing should make sure that any subsequent changes

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-05-05 Thread Jan Beulich
On 16.04.15 at 11:28, t...@xen.org wrote: At 22:35 +0100 on 11 Apr (1428791713), Andrew Cooper wrote: I am not certain that it is the correct way to fix the issue, nor that the ioreq server code is the only way to trigger it. There are several ways to shoot a gfn mapping from the guests

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-05-05 Thread Tim Deegan
At 16:10 +0100 on 05 May (1430842206), Jan Beulich wrote: On 16.04.15 at 11:28, t...@xen.org wrote: At 22:35 +0100 on 11 Apr (1428791713), Andrew Cooper wrote: I am not certain that it is the correct way to fix the issue, nor that the ioreq server code is the only way to trigger it. There

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-21 Thread Jan Beulich
On 21.04.15 at 10:24, li...@eikelenboom.it wrote: Tuesday, April 21, 2015, 10:11:07 AM, you wrote: Interesting - didn't you say that as a side effect of Andrew's patch you saw massive log spam? If you mean these: (XEN) [2015-04-12 14:55:20.226] p2m.c:884:d0v0 gfn_to_mfn failed!

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-21 Thread Jan Beulich
On 20.04.15 at 20:50, li...@eikelenboom.it wrote: Monday, April 20, 2015, 6:11:42 PM, you wrote: On 16.04.15 at 11:28, t...@xen.org wrote: At 22:35 +0100 on 11 Apr (1428791713), Andrew Cooper wrote: At least we now understand why it happens. I will defer to others CC'd on this thread for

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-20 Thread Jan Beulich
On 16.04.15 at 11:28, t...@xen.org wrote: At 22:35 +0100 on 11 Apr (1428791713), Andrew Cooper wrote: At least we now understand why it happens. I will defer to others CC'd on this thread for their opinions in the matter. The patch semes like a pretty good check to me, though I'm not

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-20 Thread Sander Eikelenboom
Monday, April 20, 2015, 6:11:42 PM, you wrote: On 16.04.15 at 11:28, t...@xen.org wrote: At 22:35 +0100 on 11 Apr (1428791713), Andrew Cooper wrote: At least we now understand why it happens. I will defer to others CC'd on this thread for their opinions in the matter. The patch semes

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-20 Thread Sander Eikelenboom
Monday, April 20, 2015, 6:11:42 PM, you wrote: On 16.04.15 at 11:28, t...@xen.org wrote: At 22:35 +0100 on 11 Apr (1428791713), Andrew Cooper wrote: At least we now understand why it happens. I will defer to others CC'd on this thread for their opinions in the matter. The patch semes

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-16 Thread Tim Deegan
[Trimmed egregious quoting] At 22:35 +0100 on 11 Apr (1428791713), Andrew Cooper wrote: I am not certain that it is the correct way to fix the issue, nor that the ioreq server code is the only way to trigger it. There are several ways to shoot a gfn mapping from the guests physmap. At

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-15 Thread Konrad Rzeszutek Wilk
On Sat, Apr 11, 2015 at 10:35:13PM +0100, Andrew Cooper wrote: On 11/04/2015 22:05, Sander Eikelenboom wrote: Saturday, April 11, 2015, 10:22:16 PM, you wrote: On 11/04/2015 20:33, Sander Eikelenboom wrote: Saturday, April 11, 2015, 8:25:52 PM, you wrote: On 11/04/15 18:42, Sander

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-12 Thread Sander Eikelenboom
Sunday, April 12, 2015, 5:15:58 PM, you wrote: Saturday, April 11, 2015, 11:35:13 PM, you wrote: On 11/04/2015 22:05, Sander Eikelenboom wrote: Saturday, April 11, 2015, 10:22:16 PM, you wrote: On 11/04/2015 20:33, Sander Eikelenboom wrote: Saturday, April 11, 2015, 8:25:52 PM, you

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-12 Thread Sander Eikelenboom
Saturday, April 11, 2015, 11:35:13 PM, you wrote: On 11/04/2015 22:05, Sander Eikelenboom wrote: Saturday, April 11, 2015, 10:22:16 PM, you wrote: On 11/04/2015 20:33, Sander Eikelenboom wrote: Saturday, April 11, 2015, 8:25:52 PM, you wrote: On 11/04/15 18:42, Sander Eikelenboom wrote:

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-11 Thread Andrew Cooper
On 11/04/2015 20:33, Sander Eikelenboom wrote: Saturday, April 11, 2015, 8:25:52 PM, you wrote: On 11/04/15 18:42, Sander Eikelenboom wrote: Saturday, April 11, 2015, 7:35:57 PM, you wrote: On 11/04/15 18:25, Sander Eikelenboom wrote: Saturday, April 11, 2015, 6:38:17 PM, you wrote: On

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-11 Thread Sander Eikelenboom
Saturday, April 11, 2015, 10:22:16 PM, you wrote: On 11/04/2015 20:33, Sander Eikelenboom wrote: Saturday, April 11, 2015, 8:25:52 PM, you wrote: On 11/04/15 18:42, Sander Eikelenboom wrote: Saturday, April 11, 2015, 7:35:57 PM, you wrote: On 11/04/15 18:25, Sander Eikelenboom wrote:

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-11 Thread Sander Eikelenboom
Saturday, April 11, 2015, 8:25:52 PM, you wrote: On 11/04/15 18:42, Sander Eikelenboom wrote: Saturday, April 11, 2015, 7:35:57 PM, you wrote: On 11/04/15 18:25, Sander Eikelenboom wrote: Saturday, April 11, 2015, 6:38:17 PM, you wrote: On 11/04/15 17:32, Andrew Cooper wrote: On 11/04/15

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-11 Thread Andrew Cooper
On 11/04/15 15:11, Sander Eikelenboom wrote: Friday, April 10, 2015, 8:55:27 PM, you wrote: On 10/04/15 11:24, Sander Eikelenboom wrote: Hi Andrew, Finally got some time to figure this out .. and i have narrowed it down to: git://xenbits.xen.org/staging/qemu-upstream-unstable.git commit

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-11 Thread Sander Eikelenboom
Saturday, April 11, 2015, 7:35:57 PM, you wrote: On 11/04/15 18:25, Sander Eikelenboom wrote: Saturday, April 11, 2015, 6:38:17 PM, you wrote: On 11/04/15 17:32, Andrew Cooper wrote: On 11/04/15 17:21, Sander Eikelenboom wrote: Saturday, April 11, 2015, 4:21:56 PM, you wrote: On 11/04/15

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-11 Thread Andrew Cooper
On 11/04/15 18:25, Sander Eikelenboom wrote: Saturday, April 11, 2015, 6:38:17 PM, you wrote: On 11/04/15 17:32, Andrew Cooper wrote: On 11/04/15 17:21, Sander Eikelenboom wrote: Saturday, April 11, 2015, 4:21:56 PM, you wrote: On 11/04/15 15:11, Sander Eikelenboom wrote: Friday, April 10,

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-11 Thread Andrew Cooper
On 11/04/15 17:21, Sander Eikelenboom wrote: Saturday, April 11, 2015, 4:21:56 PM, you wrote: On 11/04/15 15:11, Sander Eikelenboom wrote: Friday, April 10, 2015, 8:55:27 PM, you wrote: On 10/04/15 11:24, Sander Eikelenboom wrote: Hi Andrew, Finally got some time to figure this out .. and

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-11 Thread Sander Eikelenboom
Friday, April 10, 2015, 8:55:27 PM, you wrote: On 10/04/15 11:24, Sander Eikelenboom wrote: Hi Andrew, Finally got some time to figure this out .. and i have narrowed it down to: git://xenbits.xen.org/staging/qemu-upstream-unstable.git commit 7665d6ba98e20fb05c420de947c1750fd47e5c07 Xen:

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-04-01 Thread Sander Eikelenboom
Wednesday, April 1, 2015, 1:38:34 AM, you wrote: On 31/03/2015 22:11, Sander Eikelenboom wrote: Hi all, I just tested xen-unstable staging (changeset: git:0522407-dirty) with revert of commit 1aeb1156fa43fe2cd2b5003995b20466cd19a622 (due to an already reported but not yet resolved issue)

[Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-03-31 Thread Sander Eikelenboom
Hi all, I just tested xen-unstable staging (changeset: git:0522407-dirty) with revert of commit 1aeb1156fa43fe2cd2b5003995b20466cd19a622 (due to an already reported but not yet resolved issue) and build with qemu xen from git://xenbits.xen.org/staging/qemu-upstream-unstable.git (to include

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-03-31 Thread Andrew Cooper
On 31/03/2015 22:11, Sander Eikelenboom wrote: Hi all, I just tested xen-unstable staging (changeset: git:0522407-dirty) with revert of commit 1aeb1156fa43fe2cd2b5003995b20466cd19a622 (due to an already reported but not yet resolved issue) and build with qemu xen from

Re: [Xen-devel] Xen-unstable-staging: Xen BUG at iommu_map.c:455

2015-03-31 Thread Sander Eikelenboom
Wednesday, April 1, 2015, 1:38:34 AM, you wrote: On 31/03/2015 22:11, Sander Eikelenboom wrote: Hi all, I just tested xen-unstable staging (changeset: git:0522407-dirty) with revert of commit 1aeb1156fa43fe2cd2b5003995b20466cd19a622 (due to an already reported but not yet resolved issue)