diff options
| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-05-01 21:32:34 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-05-13 12:15:14 -0400 |
| commit | e93fd3b3e89e9664039281fe7e56e6f764f2a909 (patch) | |
| tree | f42988a4d0bb147b65061563ecaceb5f70e38d4c /arch/x86/include | |
| parent | 0047fcade4cb1204cafdf62150081a39356f4dbd (diff) | |
KVM: x86/mmu: Capture TDP level when updating CPUID
Snapshot the TDP level now that it's invariant (SVM) or dependent only
on host capabilities and guest CPUID (VMX). This avoids having to call
kvm_x86_ops.get_tdp_level() when initializing a TDP MMU and/or
calculating the page role, and thus avoids the associated retpoline.
Drop the WARN in vmx_get_tdp_level() as updating CPUID while L2 is
active is legal, if dodgy.
No functional change intended.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200502043234.12481-11-sean.j.christopherson@intel.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, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index ad882127079f..505cf19ace80 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -687,6 +687,7 @@ struct kvm_vcpu_arch { struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES]; int maxphyaddr; + int tdp_level; /* emulate context */ |