https://bugzilla.kernel.org/show_bug.cgi?id=111711 Bug ID: 111711 Summary: IOMMU Xonar Essence STX causes issues Product: Virtualization Version: unspecified Kernel Version: 4.4 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: bellamorte42@xxxxxxxxx Regression: No I decided to post this bug here because AFAIK there haven't any real changes to snd-virtuoso and this bug only occurs with IOMMU enabled. This issue occurs during normal operation (not running a VM). Attempting to use the xonar essence results in about 2000 lines of dmesg repeating the following: [ 38.646702] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100000 flags=0x0050] [ 38.646707] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100040 flags=0x0050] [ 38.646709] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100000 flags=0x0050] [ 38.646710] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100040 flags=0x0050] [ 38.646711] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100000 flags=0x0050] [ 38.646713] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100040 flags=0x0050] [ 38.646714] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100000 flags=0x0050] [ 38.646715] AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0000 address=0x0000000000100040 flags=0x0050] This also causes any video playback to freeze. I get about 2 frames before that happens. This issue was not present under 4.1, 4.2, or 4.3. I think it was 4.4rc3 I tested when I fist saw it but I did not test the earlier rcs. -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
