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2013 Feb 11
25
Xen 4.2.1 boot failure with IOMMU enabled
Hi all
I already posted about this problem on xen-users some time ago
(http://markmail.org/message/sbgtyjqh6bzmqx4s) but I couldn''t
resolve my problem using help from people on xen-users, so I''m posting here .
I have a problem with enabling IOMMU on Xen 4.2.1. When I enable it in BIOS
and in grub.conf using iommu=1 kernel option, my machine cannot boot.
I get a following error
2013 Jul 22
69
[xen-unstable] Commit 2ca9fbd739b8a72b16dd790d0fff7b75f5488fb8 AMD IOMMU: allocate IRTE entries instead of using a static mapping, makes dom0 boot process stall several times.
Hi Jan,
After commit 2ca9fbd739b8a72b16dd790d0fff7b75f5488fb8 AMD IOMMU: allocate IRTE entries instead of using a static mapping, booting dom0 stalls several times.
Sometimes this results in RCU stall warnings from the dom0 kernel, hitting the "any" key, on normal or serial console, makes the boot continue for a while but it stalls several times.
(It also stalls on shutdown BTW)
I have