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ladybird/Kernel/Arch
Tom 6e46e21c42 Kernel: Implement Page Attribute Table (PAT) support and Write-Combine
This allows us to enable Write-Combine on e.g. framebuffers,
significantly improving performance on bare metal.

To keep things simple we right now only use one of up to three bits
(bit 7 in the PTE), which maps to the PA4 entry in the PAT MSR, which
we set to the Write-Combine mode on each CPU at boot time.
2022-01-26 09:21:04 +02:00
..
2021-10-15 21:48:45 +01:00