Yes, there's no explicit handoff point between the firmware and the OS under BIOS so there's no real way the firmware can do IOMMU setup in the first place (or, rather, it needs to tear it down before launching CSM)
Power management, mobile and firmware developer on Linux. Security developer at Aurora. Ex-biologist. mjg59 on Twitter. Content here should not be interpreted as the opinion of my employer. Also on Mastodon.
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Re: EFI only?
Date: 2020-01-29 06:01 pm (UTC)