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| author | Ben Gardon <bgardon@google.com> | 2020-10-14 21:26:44 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-22 01:17:00 +0300 |
| commit | 02c00b3a2f7e86203d878ff432a5a19876049db6 (patch) | |
| tree | 27104f708676fc7ad3d2ff5fecfa9dda4b70ded0 /arch/x86/include/asm/kvm_host.h | |
| parent | fe5db27d36017715827e9be7711332d701c6b7de (diff) | |
| download | linux-02c00b3a2f7e86203d878ff432a5a19876049db6.tar.xz | |
kvm: x86/mmu: Allocate and free TDP MMU roots
The TDP MMU must be able to allocate paging structure root pages and track
the usage of those pages. Implement a similar, but separate system for root
page allocation to that of the x86 shadow paging implementation. When
future patches add synchronization model changes to allow for parallel
page faults, these pages will need to be handled differently from the
x86 shadow paging based MMU's root pages.
Tested by running kvm-unit-tests and KVM selftests on an Intel Haswell
machine. This series introduced no new failures.
This series can be viewed in Gerrit at:
https://linux-review.googlesource.com/c/virt/kvm/kvm/+/2538
Signed-off-by: Ben Gardon <bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index f6d47ac74a52..082684ce2d1b 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1004,6 +1004,7 @@ struct kvm_arch { * operations. */ bool tdp_mmu_enabled; + struct list_head tdp_mmu_roots; }; struct kvm_vm_stat { |