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- Clean up code that deals with honoring guest MTRRs when the VM has
non-coherent DMA and host MTRRs are ignored, i.e. EPT is enabled.
- Zap EPT entries when non-coherent DMA assignment stops/start to prevent
using stale entries with the wrong memtype.
- Don't ignore guest PAT for CR0.CD=1 && KVM_X86_QUIRK_CD_NW_CLEARED=y, as
there's zero reason to ignore guest PAT if the effective MTRR memtype is WB.
This will also allow for future optimizations of handling guest MTRR updates
for VMs with non-coherent DMA and the quirk enabled.
- Harden the fast page fault path to guard against encountering an invalid
root when walking SPTEs.
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Merge tag 'kvm-x86-mmu-6.7' of https://github.com/kvm-x86/linux into HEAD
KVM x86 MMU changes for 6.7:
- Clean up code that deals with honoring guest MTRRs when the VM has
non-coherent DMA and host MTRRs are ignored, i.e. EPT is enabled.
- Zap EPT entries when non-coherent DMA assignment stops/start to prevent
using stale entries with the wrong memtype.
- Don't ignore guest PAT for CR0.CD=1 && KVM_X86_QUIRK_CD_NW_CLEARED=y, as
there's zero reason to ignore guest PAT if the effective MTRR memtype is WB.
This will also allow for future optimizations of handling guest MTRR updates
for VMs with non-coherent DMA and the quirk enabled.
- Harden the fast page fault path to guard against encountering an invalid
root when walking SPTEs.
f0f59d069e