From 992fdf6f46252a459c6b1b8d971b2c71f01460f8 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Fri, 22 Feb 2013 11:56:54 +0100 Subject: 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 Acked-by: Keir Fraser --- docs/misc/xen-command-line.markdown | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'docs/misc') diff --git a/docs/misc/xen-command-line.markdown b/docs/misc/xen-command-line.markdown index 81b86613dc..708ffc2d5e 100644 --- a/docs/misc/xen-command-line.markdown +++ b/docs/misc/xen-command-line.markdown @@ -639,6 +639,13 @@ limit is ignored by Xen. Specify if the MMConfig space should be enabled. +### msi +> `= ` + +> Default: `true` + +Force Xen to (not) use PCI-MSI, even if ACPI FADT says otherwise. + ### mwait-idle > `= ` -- cgit v1.2.3