Re: [PATCH RESEND 2] intel_iommu: disable all VT-d PMRs when TXTlaunched

[Chris Wright]

* Joseph Cihula (joseph.cihula@xxxxxxxxx) 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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