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| author | Wei Huang <wei.huang2@amd.com> | 2021-08-18 11:55:47 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-08-20 16:06:44 -0400 |
| commit | 746700d21fd52399c97aeb7791584bbf5426983c (patch) | |
| tree | 98eb6e95fd56c2dde9aba6d08efdbc3d7de365f4 /arch/x86/kvm/vmx/vmx.c | |
| parent | ec607a564f70519b340f7eb4cfc0f4a6b55285ac (diff) | |
| download | lwn-746700d21fd52399c97aeb7791584bbf5426983c.tar.gz lwn-746700d21fd52399c97aeb7791584bbf5426983c.zip | |
KVM: x86: Allow CPU to force vendor-specific TDP level
AMD future CPUs will require a 5-level NPT if host CR4.LA57 is set.
To prevent kvm_mmu_get_tdp_level() from incorrectly changing NPT level
on behalf of CPUs, add a new parameter in kvm_configure_mmu() to force
a fixed TDP level.
Signed-off-by: Wei Huang <wei.huang2@amd.com>
Message-Id: <20210818165549.3771014-2-wei.huang2@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index cd913100b300..fada1055f325 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7820,7 +7820,8 @@ static __init int hardware_setup(void) ept_lpage_level = PG_LEVEL_2M; else ept_lpage_level = PG_LEVEL_4K; - kvm_configure_mmu(enable_ept, vmx_get_max_tdp_level(), ept_lpage_level); + kvm_configure_mmu(enable_ept, 0, vmx_get_max_tdp_level(), + ept_lpage_level); /* * Only enable PML when hardware supports PML feature, and both EPT |