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[Xen-devel] Re: [Xen-changelog] [xen-unstable] vt-d: Fixpanic in msi_msg
| To: | "Cui, Dexuan" <dexuan.cui@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Miroslav Rezanina <mrezanin@xxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: [Xen-changelog] [xen-unstable] vt-d: Fixpanic in msi_msg_read_remap_rte with acpi=off |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Fri, 16 Oct 2009 11:22:17 +0100 |
| Cc: | |
| Delivery-date: | Fri, 16 Oct 2009 03:22:48 -0700 |
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| Thread-index: | AcpOOC2WMZHP9rJXSpWM9ZQfxjJ27QACxX5AAAHRae4= |
| Thread-topic: | [Xen-changelog] [xen-unstable] vt-d: Fixpanic in msi_msg_read_remap_rte with acpi=off |
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On 16/10/2009 11:03, "Cui, Dexuan" <dexuan.cui@xxxxxxxxx> wrote: > Actually when iommu=1 and acpi=off, in __start_xen() -> acpi_boot_init(), > acpi_dmar_init() can't be invoked at all and hence parse_dmar_table() can't be > invoked, as a result, we should not try to use VT-d at all, however, the > global variable iommu_enabled is left set to 1. > > So I don't think this changeset is the right fix. I think the correct one > should be: in disable_acpi(), we force iommu_enabled to 0. Sounds better to me. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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