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| author |  Sean Christopherson <seanjc@google.com>
| 2023-07-28 18:35:20 -0700 |
|---|---|---|
| committer |  Paolo Bonzini <pbonzini@redhat.com>
| 2023-08-31 13:49:00 -0400 |
| commit | 932844462ae310493d0d21b1c5d7464d59702b4d (patch) | |
| tree | 6c9d225ec0c9aa2af4c0e26bc52a0af07f4b410d /arch/x86/include | |
| parent | KVM: x86/mmu: Don't rely on page-track mechanism to flush on memslot change (diff) | |
| download | linux-932844462ae310493d0d21b1c5d7464d59702b4d.tar.gz linux-932844462ae310493d0d21b1c5d7464d59702b4d.tar.bz2 linux-932844462ae310493d0d21b1c5d7464d59702b4d.zip | |
KVM: x86/mmu: Don't bounce through page-track mechanism for guest PTEs
Don't use the generic page-track mechanism to handle writes to guest PTEs
in KVM's MMU. KVM's MMU needs access to information that should not be
exposed to external page-track users, e.g. KVM needs (for some definitions
of "need") the vCPU to query the current paging mode, whereas external
users, i.e. KVMGT, have no ties to the current vCPU and so should never
need the vCPU.
Moving away from the page-track mechanism will allow dropping use of the
page-track mechanism for KVM's own MMU, and will also allow simplifying
and cleaning up the page-track APIs.
Reviewed-by: Yan Zhao <yan.y.zhao@intel.com>
Tested-by: Yongwei Ma <yongwei.ma@intel.com>
Link: https://lore.kernel.org/r/20230729013535.1070024-15-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 9e76c910e52c..93fdc42458cc 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1265,7 +1265,6 @@ struct kvm_arch { * create an NX huge page (without hanging the guest). */ struct list_head possible_nx_huge_pages; - struct kvm_page_track_notifier_node mmu_sp_tracker; struct kvm_page_track_notifier_head track_notifier_head; /* * Protects marking pages unsync during page faults, as TDP MMU page |