"No firmware reserved region can cover this RMRR" という警告は何を意味しますか?
Issue
- カーネルログに以下の警告が表示されます。
DMAR: RMRR base: 0x0000006f55f000 end: 0x0000006f561fff
DMAR: [Firmware Bug]: No firmware reserved region can cover this RMRR [0x000000006f55f000-0x000000006f561fff], contact BIOS vendor for fixes
DMAR: [Firmware Bug]: Your BIOS is broken; bad RMRR [0x000000006f55f000-0x000000006f561fff] BIOS vendor: Dell Inc.; Ver: 2.9.3
Environment
- Red Hat Enterprise Linux 8.3 以降
- Red Hat Enterprise Linux 9 以降
- Intel Skylake、Cascade Lake CPU、Coffee Lake
- Intel Atom® プロセッサー C3708 (開発コード名 Denverton)
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