]> git.baikalelectronics.ru Git - kernel.git/commit
iommu/vt-d: Print x2apic opt out info instead of printing a warning
authorFenghua Yu <fenghua.yu@intel.com>
Sat, 21 Feb 2015 21:07:27 +0000 (13:07 -0800)
committerDavid Woodhouse <David.Woodhouse@intel.com>
Wed, 25 Mar 2015 15:35:19 +0000 (15:35 +0000)
commitd69db90714c4c94a356ba05285b80555457a4be8
tree235f48b04b4c6a7f3fc996b0950fde4d5ddf720e
parent20a59d55df6e346bdf4e1873cfadeef1b18b4b83
iommu/vt-d: Print x2apic opt out info instead of printing a warning

BIOS can set up x2apic_opt_out bit on some platforms, for various misguided
reasons like insane SMM code with weird assumptions about what descriptors
look like, or wanting Windows not to enable the IOMMU so that the graphics
driver will take it over for SVM in "driver mode".

A user can either disable the x2apic_opt_out bit in BIOS or by kernel
parameter "no_x2apic_optout". Instead of printing a warning, we just
print information of x2apic opt out.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
drivers/iommu/intel_irq_remapping.c