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authorJan Beulich <jbeulich@suse.com>2013-03-07 17:58:19 +0100
committerJan Beulich <jbeulich@suse.com>2013-03-07 17:58:19 +0100
commit1ae14344658bb3eaad1618d9ad29a57cedbd74ea (patch)
treeb015c8ee57db183764fe472d0d208409c26fb548 /docs
parent4b0ac057e3bcae70a109da0610e1dd2e270aec8a (diff)
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honor ACPI v4 FADT flags
- force use of physical APIC mode if indicated so (as we don't support xAPIC cluster mode, the respective flag is taken to force physical mode too) - don't use MSI if indicated so (implies no IOMMU) Both can be overridden on the command line, for the MSI case this at once adds a new command line option allowing to turn off PCI MSI (IOMMU and HPET are unaffected by this). Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Keir Fraser <keir@xen.org> master changeset: 992fdf6f46252a459c6b1b8d971b2c71f01460f8 master date: 2013-02-22 11:56:54 +0100
Diffstat (limited to 'docs')
-rw-r--r--docs/misc/xen-command-line.markdown7
1 files changed, 7 insertions, 0 deletions
diff --git a/docs/misc/xen-command-line.markdown b/docs/misc/xen-command-line.markdown
index ef411e1582..fe6ae84e05 100644
--- a/docs/misc/xen-command-line.markdown
+++ b/docs/misc/xen-command-line.markdown
@@ -594,6 +594,13 @@ limit is ignored by Xen.
Specify if the MMConfig space should be enabled.
+### msi
+> `= <boolean>`
+
+> Default: `true`
+
+Force Xen to (not) use PCI-MSI, even if ACPI FADT says otherwise.
+
### nmi
> `= ignore | dom0 | fatal`