KVM: x86/mmu: remove extended bits from mmu_role, rename field

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mmu_role represents the role of the root of the page tables.
It does not need any extended bits, as those govern only KVM's
page table walking; the is_* functions used for page table
walking always use the CPU role.

ext.valid is not present anymore in the MMU role, but an
all-zero MMU role is impossible because the level field is
never zero in the MMU role.  So just zap the whole mmu_role
in order to force invalidation after CPUID is updated.

While making this change, which requires touching almost every
occurrence of "mmu_role", rename it to "root_role".

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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This commit is contained in:

Paolo Bonzini 2022-02-14 08:46:24 -05:00

parent 362505deb8

commit 7a458f0e1b

4 changed files with 46 additions and 48 deletions

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2

arch/x86/include/asm/kvm_host.h

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86

arch/x86/kvm/mmu/mmu.c

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4

arch/x86/kvm/mmu/paging_tmpl.h

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2

arch/x86/kvm/mmu/tdp_mmu.c

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