Messages in this thread | | | Date | Thu, 21 Apr 2011 15:44:15 -0700 | From | Chris Wright <> | Subject | Re: [PATCH RESEND 2] intel_iommu: disable all VT-d PMRs when TXT launched |
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* Joseph Cihula (joseph.cihula@intel.com) wrote: > This patch detects when the kernel has been launched with TXT and then > disables the PMRs on all VT-d engines. In some cases where the reason > that remapping is not being enabled is due to possible ACPI DMAR table > errors, the VT-d engine addresses may not be correct and thus not able > to be safely programmed even to disable PMRs. Because part of the TXT > launch process is the verification of these addresses, it will always be > safe to disable PMRs if the TXT launch has succeeded and hence only > doing this in such cases.
What about on resume? The ->ignored units won't get PMR disabled.
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