Re: Serious AMD-Vi(?) issue

2024-05-15 Thread Elliott Mitchell
On Wed, May 15, 2024 at 02:40:31PM +0100, Kelly Choi wrote: > > As explained previously, we are happy to help resolve issues and provide > advice where necessary. However, to do this, our developers need the > relevant information to provide accurate resolutions. Given that our > developers have

Re: Serious AMD-Vi(?) issue

2024-05-15 Thread Kelly Choi
Hello Elliott, Most of our developers are based in the EU timezone, however we are a worldwide community. The Xen Project is an open source community that everyone contributes to and we do not divide how we provide help, based on location. As explained previously, we are happy to help resolve

Re: Serious AMD-Vi(?) issue

2024-05-14 Thread Elliott Mitchell
On Tue, May 14, 2024 at 10:22:51AM +0200, Jan Beulich wrote: > On 13.05.2024 22:11, Elliott Mitchell wrote: > > On Mon, May 13, 2024 at 10:44:59AM +0200, Roger Pau Monné wrote: > >> Why do you mask the device SBDF in the above snippet? I would really > >> like to understand what's so privacy

Re: Serious AMD-Vi(?) issue

2024-05-14 Thread Jan Beulich
On 13.05.2024 22:11, Elliott Mitchell wrote: > On Mon, May 13, 2024 at 10:44:59AM +0200, Roger Pau Monné wrote: >> Why do you mask the device SBDF in the above snippet? I would really >> like to understand what's so privacy relevant in a PCI SBDF number. > > I doubt it reveals much. Simply

Re: Serious AMD-Vi(?) issue

2024-05-14 Thread Jan Beulich
On 13.05.2024 10:44, Roger Pau Monné wrote: > On Fri, May 10, 2024 at 09:09:54PM -0700, Elliott Mitchell wrote: >> On Thu, Apr 18, 2024 at 09:33:31PM -0700, Elliott Mitchell wrote: >>> >>> I suspect this is a case of there is some step which is missing from >>> Xen's IOMMU handling. Perhaps

Re: Serious AMD-Vi(?) issue

2024-05-13 Thread Elliott Mitchell
On Mon, May 13, 2024 at 10:44:59AM +0200, Roger Pau Monné wrote: > On Fri, May 10, 2024 at 09:09:54PM -0700, Elliott Mitchell wrote: > > On Thu, Apr 18, 2024 at 09:33:31PM -0700, Elliott Mitchell wrote: > > > > > > I suspect this is a case of there is some step which is missing from > > > Xen's

Re: Serious AMD-Vi(?) issue

2024-05-13 Thread Roger Pau Monné
On Fri, May 10, 2024 at 09:09:54PM -0700, Elliott Mitchell wrote: > On Thu, Apr 18, 2024 at 09:33:31PM -0700, Elliott Mitchell wrote: > > > > I suspect this is a case of there is some step which is missing from > > Xen's IOMMU handling. Perhaps something which Linux does during an early > > DMA

Re: Serious AMD-Vi(?) issue

2024-05-10 Thread Elliott Mitchell
On Thu, Apr 18, 2024 at 09:33:31PM -0700, Elliott Mitchell wrote: > > I suspect this is a case of there is some step which is missing from > Xen's IOMMU handling. Perhaps something which Linux does during an early > DMA setup stage, but the current Xen implementation does lazily? > Alternatively

Re: Serious AMD-Vi(?) issue

2024-04-18 Thread Elliott Mitchell
On Thu, Apr 18, 2024 at 09:09:51AM +0200, Jan Beulich wrote: > On 18.04.2024 08:45, Elliott Mitchell wrote: > > On Wed, Apr 17, 2024 at 02:40:09PM +0200, Jan Beulich wrote: > >> On 11.04.2024 04:41, Elliott Mitchell wrote: > >>> On Thu, Mar 28, 2024 at 07:25:02AM +0100, Jan Beulich wrote: >

Re: Serious AMD-Vi(?) issue

2024-04-18 Thread Jan Beulich
On 18.04.2024 08:45, Elliott Mitchell wrote: > On Wed, Apr 17, 2024 at 02:40:09PM +0200, Jan Beulich wrote: >> On 11.04.2024 04:41, Elliott Mitchell wrote: >>> On Thu, Mar 28, 2024 at 07:25:02AM +0100, Jan Beulich wrote: On 27.03.2024 18:27, Elliott Mitchell wrote: > On Mon, Mar 25, 2024

Re: Serious AMD-Vi(?) issue

2024-04-18 Thread Elliott Mitchell
On Wed, Apr 17, 2024 at 02:40:09PM +0200, Jan Beulich wrote: > On 11.04.2024 04:41, Elliott Mitchell wrote: > > On Thu, Mar 28, 2024 at 07:25:02AM +0100, Jan Beulich wrote: > >> On 27.03.2024 18:27, Elliott Mitchell wrote: > >>> On Mon, Mar 25, 2024 at 02:43:44PM -0700, Elliott Mitchell wrote: >

Re: Serious AMD-Vi(?) issue

2024-04-17 Thread Jan Beulich
On 11.04.2024 04:41, Elliott Mitchell wrote: > On Thu, Mar 28, 2024 at 07:25:02AM +0100, Jan Beulich wrote: >> On 27.03.2024 18:27, Elliott Mitchell wrote: >>> On Mon, Mar 25, 2024 at 02:43:44PM -0700, Elliott Mitchell wrote: On Mon, Mar 25, 2024 at 08:55:56AM +0100, Jan Beulich wrote: >

Re: Serious AMD-Vi(?) issue

2024-04-10 Thread Elliott Mitchell
On Thu, Mar 28, 2024 at 07:25:02AM +0100, Jan Beulich wrote: > On 27.03.2024 18:27, Elliott Mitchell wrote: > > On Mon, Mar 25, 2024 at 02:43:44PM -0700, Elliott Mitchell wrote: > >> On Mon, Mar 25, 2024 at 08:55:56AM +0100, Jan Beulich wrote: > >>> > >>> In fact when running into trouble, the

Re: Serious AMD-Vi(?) issue

2024-03-28 Thread Elliott Mitchell
On Thu, Mar 28, 2024 at 08:22:31AM -0700, Elliott Mitchell wrote: > On Thu, Mar 28, 2024 at 07:25:02AM +0100, Jan Beulich wrote: > > On 27.03.2024 18:27, Elliott Mitchell wrote: > > > On Mon, Mar 25, 2024 at 02:43:44PM -0700, Elliott Mitchell wrote: > > >> On Mon, Mar 25, 2024 at 08:55:56AM +0100,

Re: Serious AMD-Vi(?) issue

2024-03-28 Thread Elliott Mitchell
On Thu, Mar 28, 2024 at 07:25:02AM +0100, Jan Beulich wrote: > On 27.03.2024 18:27, Elliott Mitchell wrote: > > On Mon, Mar 25, 2024 at 02:43:44PM -0700, Elliott Mitchell wrote: > >> On Mon, Mar 25, 2024 at 08:55:56AM +0100, Jan Beulich wrote: > >>> On 22.03.2024 20:22, Elliott Mitchell wrote: >

Re: Serious AMD-Vi(?) issue

2024-03-28 Thread Jan Beulich
On 27.03.2024 18:27, Elliott Mitchell wrote: > On Mon, Mar 25, 2024 at 02:43:44PM -0700, Elliott Mitchell wrote: >> On Mon, Mar 25, 2024 at 08:55:56AM +0100, Jan Beulich wrote: >>> On 22.03.2024 20:22, Elliott Mitchell wrote: On Fri, Mar 22, 2024 at 04:41:45PM +, Kelly Choi wrote: >

Re: Serious AMD-Vi(?) issue

2024-03-27 Thread Elliott Mitchell
On Mon, Mar 25, 2024 at 02:43:44PM -0700, Elliott Mitchell wrote: > On Mon, Mar 25, 2024 at 08:55:56AM +0100, Jan Beulich wrote: > > On 22.03.2024 20:22, Elliott Mitchell wrote: > > > On Fri, Mar 22, 2024 at 04:41:45PM +, Kelly Choi wrote: > > >> > > >> I can see you've recently engaged with

Re: Serious AMD-Vi(?) issue

2024-03-25 Thread Elliott Mitchell
On Mon, Mar 25, 2024 at 08:55:56AM +0100, Jan Beulich wrote: > On 22.03.2024 20:22, Elliott Mitchell wrote: > > On Fri, Mar 22, 2024 at 04:41:45PM +, Kelly Choi wrote: > >> > >> I can see you've recently engaged with our community with some issues you'd > >> like help with. > >> We love the

Re: Serious AMD-Vi(?) issue

2024-03-25 Thread Jan Beulich
On 22.03.2024 20:22, Elliott Mitchell wrote: > On Fri, Mar 22, 2024 at 04:41:45PM +, Kelly Choi wrote: >> >> I can see you've recently engaged with our community with some issues you'd >> like help with. >> We love the fact you are participating in our project, however, our >> developers

Re: Serious AMD-Vi(?) issue

2024-03-22 Thread Elliott Mitchell
On Fri, Mar 22, 2024 at 04:41:45PM +, Kelly Choi wrote: > > I can see you've recently engaged with our community with some issues you'd > like help with. > We love the fact you are participating in our project, however, our > developers aren't able to help if you do not provide the specific

Re: Serious AMD-Vi(?) issue

2024-03-22 Thread Kelly Choi
Hi Elliott, I hope you're well. I'm Kelly, the community manager at the Xen Project. I can see you've recently engaged with our community with some issues you'd like help with. We love the fact you are participating in our project, however, our developers aren't able to help if you do not

Re: Serious AMD-Vi(?) issue

2024-03-18 Thread Elliott Mitchell
I sent a ping on this about 2 weeks ago. Since the plan is to move x86 IOMMU under general x86, the other x86 maintainers should be aware of this: On Mon, Feb 12, 2024 at 03:23:00PM -0800, Elliott Mitchell wrote: > On Thu, Jan 25, 2024 at 12:24:53PM -0800, Elliott Mitchell wrote: > > Apparently

Re: Serious AMD-Vi issue

2024-03-04 Thread Elliott Mitchell
On Mon, Feb 12, 2024 at 03:23:00PM -0800, Elliott Mitchell wrote: > On Thu, Jan 25, 2024 at 12:24:53PM -0800, Elliott Mitchell wrote: > > Apparently this was first noticed with 4.14, but more recently I've been > > able to reproduce the issue: > > > > https://bugs.debian.org/988477 > > > > The

Re: Serious AMD-Vi issue

2024-02-12 Thread Elliott Mitchell
On Thu, Jan 25, 2024 at 12:24:53PM -0800, Elliott Mitchell wrote: > Apparently this was first noticed with 4.14, but more recently I've been > able to reproduce the issue: > > https://bugs.debian.org/988477 > > The original observation features MD-RAID1 using a pair of Samsung > SATA-attached

Serious AMD-Vi issue

2024-01-25 Thread Elliott Mitchell
Apparently this was first noticed with 4.14, but more recently I've been able to reproduce the issue: https://bugs.debian.org/988477 The original observation features MD-RAID1 using a pair of Samsung SATA-attached flash devices. The main line shows up in `xl dmesg`: (XEN) AMD-Vi: