(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Tue, 18 Aug 2009 14:54:22 GMT bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=14003 > > Summary: Infinite loop on bootup while handling DMAR That's a box-killing post-2.6.30 regression. > Product: Drivers > Version: 2.5 > Kernel Version: 2.6.31-rc6 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: PCI > AssignedTo: drivers_pci@xxxxxxxxxxxxxxxxxxxx > ReportedBy: bero@xxxxxxxxxxxx > Regression: Yes > > > Booting 64bit 2.6.31-rc6 on a hp xw4600 results in an infinite loop of > > DMAR:[DMA READ] Request device [ff:1f.7] fault addr fffffffffffff000 > DMAR:[fault reason 255] Unknown > > even with iommu=soft (2.6.30 could boot with iommu=soft, but would result in > the same error with hardware iommu enabled). > > 2.6.30 reports this about the DMAR ACPI tables: > > ACPI: DMAR 00000000defc247f 00158 (v01 COMPAQ BEARLX38 00000001 00000000) > DMAR:Host address width 36 > DMAR:DRHD (flags: 0x00000000)base: 0x00000000fed90000 > DMAR:DRHD (flags: 0x00000001)base: 0x00000000fed93000 > DMAR:RMRR base: 0x00000000defd0000 end: 0x00000000defd0fff > DMAR:RMRR base: 0x00000000defd1000 end: 0x00000000defd1fff > DMAR:RMRR base: 0x00000000defd2000 end: 0x00000000defd2fff > DMAR:RMRR base: 0x00000000defd3000 end: 0x00000000defd3fff > DMAR:RMRR base: 0x00000000defd4000 end: 0x00000000defd4fff > DMAR:RMRR base: 0x00000000defd5000 end: 0x00000000defd5fff > DMAR:RMRR base: 0x00000000defd6000 end: 0x00000000defd6fff > DMAR:RMRR base: 0x00000000defd7000 end: 0x00000000defd7fff > Not all IO-APIC's listed under remapping hardware > > Device ff:1f.7 doesn't actually exist, lspci -n says > > 00:00.0 0600: 8086:29e0 > 00:01.0 0604: 8086:29e1 > 00:1a.0 0c03: 8086:2937 (rev 02) > 00:1a.1 0c03: 8086:2938 (rev 02) > 00:1a.2 0c03: 8086:2939 (rev 02) > 00:1a.7 0c03: 8086:293c (rev 02) > 00:1b.0 0403: 8086:293e (rev 02) > 00:1c.0 0604: 8086:2940 (rev 02) > 00:1c.4 0604: 8086:2948 (rev 02) > 00:1c.5 0604: 8086:294a (rev 02) > 00:1d.0 0c03: 8086:2934 (rev 02) > 00:1d.1 0c03: 8086:2935 (rev 02) > 00:1d.2 0c03: 8086:2936 (rev 02) > 00:1d.7 0c03: 8086:293a (rev 02) > 00:1e.0 0604: 8086:244e (rev 92) > 00:1f.0 0601: 8086:2916 (rev 02) > 00:1f.2 0106: 8086:2922 (rev 02) > 01:00.0 0300: 1002:7187 > 01:00.1 0380: 1002:71a7 > 10:0b.0 0c00: 11c1:5811 (rev 61) > 3f:00.0 0200: 14e4:167b (rev 02) > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
