Hi Sander, That's interesting findings. I don't think the isoc patches do anything differently above the 4Gb mem boundary. I'll try it on my side. Thanks & Best regards, Andiry > -----Original Message----- > From: Sander Eikelenboom [mailto:linux@xxxxxxxxxxxxxx] > Sent: Friday, October 01, 2010 4:28 AM > To: Xu, Andiry > Cc: Sarah Sharp; linux-usb@xxxxxxxxxxxxxxx > Subject: Re: XHCI freezes, most up to date patches / tree ? > > Hi Andiry, > > It seems i have narrowed down my problem a bit. > My system has 8Gb of ram, when i restrict the hypervisor to use only 4G > the system doesn't freeze. > When using the full 8Gb it does (although the guests never get more than > 1G of mem) > > When i compare the logs of the 2 cases i get in the guest with the xhci > controller passed through to it: > > When restricting to 4G: > Sep 28 17:55:02 security kernel: [81744.078288] xhci_hcd 0000:07:00.0: > WARN: transfer error on endpoint > Sep 28 17:55:02 security kernel: [81744.092653] xhci_hcd 0000:07:00.0: > WARN: transfer error on endpoint > Sep 28 17:55:02 security kernel: [81744.093647] xhci_hcd 0000:07:00.0: > WARN: transfer error on endpoint > Sep 28 17:55:02 security kernel: [81744.093647] xhci_hcd 0000:07:00.0: > WARN: transfer error on endpoint > Sep 28 17:55:02 security kernel: [81744.093647] xhci_hcd 0000:07:00.0: > WARN: transfer error on endpoint > > Without restrictions, i don't get these before the system freezes. > It's a hunch, but perhaps this could be related, because when it freezes > it hasn't got time to write the warning to the syslog and to disk. > > Is there anything in the cleanup of this warning related to dma/msi-x > interrupts that could write or do something that could react differently > above the 4Gb mem boundary ? > > -- > > Sander > > > Tuesday, September 14, 2010, 10:31:21 AM, you wrote: > > > Hi Sander, > > > Paul observed freeze issue, but in his last mail, his xHCI controller > > has been updated and the symptom is observed much less frequently. And I > > haven't seen his update log since then. > > > Thanks & Best regards, > > Andiry > > > > >> -----Original Message----- > >> From: Sander Eikelenboom [mailto:linux@xxxxxxxxxxxxxx] > >> Sent: Tuesday, September 14, 2010 4:01 PM > >> To: Xu, Andiry > >> Cc: Sarah Sharp; linux-usb@xxxxxxxxxxxxxxx > >> Subject: Re: XHCI freezes, most up to date patches / tree ? > >> > >> Hi Andiry, > >> > >> Yes, since i was testing on baremetal instead of in a VM, i had to use > >> another program to do the videograbbing, it turned out I was trying to > > use > >> the old v4l1 interface instead of v4l2. > >> That should have worked, but resulted in an Oops, using v4l2 (as > > intended) > >> did work. > >> > >> During my vacation, I have had the grabber passed through to the VM > > (on > >> USB2) and it is running for +20 days now (24/7 grabbing), the machine > > had > >> a lot of disk and network access as well. > >> So the setup in essence could work, still having to find out what > > exactly > >> in passthrough in combination with XHCI makes it freeze completely > > without > >> any Oops or Trace. > >> That's why I was interessted in the thread with Paul Zimmerman, > > although i > >> didn't see a conclusion. > >> > >> -- > >> Sander > >> > >> > >> Tuesday, September 14, 2010, 9:53:00 AM, you wrote: > >> > >> > Hi Sander, > >> > >> > As far as I know, there is no recent update patch for xhci isoc. > >> > >> > In your last mail you mentioned you also observed em28xx driver on > > USB2 > >> > issue. Is that fixed? > >> > >> > Please apply the patch I sent to you last time when you catch the > > freeze > >> > symptom. > >> > >> > Thanks & Best regards, > >> > Andiry > >> > > >> > >> >> -----Original Message----- > >> >> From: Sander Eikelenboom [mailto:linux@xxxxxxxxxxxxxx] > >> >> Sent: Monday, September 13, 2010 7:32 PM > >> >> To: Xu, Andiry > >> >> Cc: Sarah Sharp; linux-usb@xxxxxxxxxxxxxxx > >> >> Subject: XHCI freezes, most up to date patches / tree ? > >> >> > >> >> Hi Andiry, > >> >> > >> >> After my two week holiday, i would like to resume my quest in > > finding > >> > my > >> >> problem where my USB3 passthrough on Xen seems to freeze my > > complete > >> >> system. > >> >> It seems to be DMA related, although after consulting with the guy > > who > >> >> works on the pci passthrough / swiotlb on Xen he couldn't find Xen > >> > related > >> >> problems at first hand. > >> >> > >> >> Of special interest to me is the thread by "Paul Zimmerman" on the > >> > usb- > >> >> devel mailing list. Also reporting a freeze. > >> >> I didn't see any outcome of that discussion. > >> >> > >> >> Is there somewhere were i can get the most recent set of patches > > for > >> >> xhci/isoc, or is linus 2.6.36-rc4 tree up to date ? > >> >> > >> >> -- > >> >> Sander > >> >> > >> > >> > >> > >> > >> > >> -- > >> Best regards, > >> Sander mailto:linux@xxxxxxxxxxxxxx > >> > > > > > > -- > Best regards, > Sander mailto:linux@xxxxxxxxxxxxxx > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
