Re: [Xen-devel] [PATCH] VTd/dmar: Tweak how the DMAR table is clobbered

[David Vrabel <david.vrabel@xxxxxxxxxx>]

On 08/04/15 20:44, Andrew Cooper wrote:
> Intead of clobbering DMAR -> XMAR and back, clobber to RMAD instead.  This
> means that changing the signature does not alter the checksum, which allows
> the clobbering/unclobbering to be peformed atomically and idempotently, which
> is an advantage on the kexec path which can reenter acpi_dmar_reinstate().

Could RMAD be specified as a real table in the future?  Does the
clobbered name have to start with X to avoid future conflicts?

David

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