From: Chao Gao <chao.gao@intel.com>
To: Binbin Wu <binbin.wu@linux.intel.com>
Cc: <kvm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<seanjc@google.com>, <pbonzini@redhat.com>, <kai.huang@intel.com>,
<robert.hu@linux.intel.com>
Subject: Re: [PATCH v8 3/6] KVM: x86: Virtualize CR3.LAM_{U48,U57}
Date: Wed, 10 May 2023 16:58:40 +0800 [thread overview]
Message-ID: <ZFtcwACy/1rn2Py1@chao-email> (raw)
In-Reply-To: <20230510060611.12950-4-binbin.wu@linux.intel.com>
>@@ -7743,6 +7744,9 @@ static void vmx_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu)
> vmx->msr_ia32_feature_control_valid_bits &=
> ~FEAT_CTL_SGX_LC_ENABLED;
>
>+ if (guest_cpuid_has(vcpu, X86_FEATURE_LAM))
>+ vcpu->arch.cr3_ctrl_bits |= X86_CR3_LAM_U48 | X86_CR3_LAM_U57;
This function can be called multiple times. We need to clear LAM bits if LAM
isn't exposed to the guest, i.e.,
else
vcpu->arch.cr3_ctrl_bits &= ~(X86_CR3_LAM_U48 | X86_CR3_LAM_U57);
With this fixed,
Reviewed-by: Chao Gao <chao.gao@intel.com>
next prev parent reply other threads:[~2023-05-10 8:59 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-10 6:06 [PATCH v8 0/6] Linear Address Masking (LAM) KVM Enabling Binbin Wu
2023-05-10 6:06 ` [PATCH v8 1/6] KVM: x86: Consolidate flags for __linearize() Binbin Wu
2023-05-10 7:42 ` Chao Gao
2023-05-11 1:25 ` Binbin Wu
2023-05-11 9:58 ` David Laight
2023-05-12 1:35 ` Binbin Wu
2023-05-10 12:41 ` Huang, Kai
2023-05-11 1:30 ` Binbin Wu
2023-05-10 6:06 ` [PATCH v8 2/6] KVM: x86: Virtualize CR4.LAM_SUP Binbin Wu
2023-05-11 12:50 ` Huang, Kai
2023-05-12 1:33 ` Binbin Wu
2023-05-12 10:49 ` Huang, Kai
2023-05-18 4:01 ` Binbin Wu
2023-05-10 6:06 ` [PATCH v8 3/6] KVM: x86: Virtualize CR3.LAM_{U48,U57} Binbin Wu
2023-05-10 8:58 ` Chao Gao [this message]
2023-05-11 1:27 ` Binbin Wu
2023-05-10 11:59 ` Huang, Kai
2023-05-10 6:06 ` [PATCH v8 4/6] KVM: x86: Introduce untag_addr() in kvm_x86_ops Binbin Wu
2023-05-11 6:03 ` Chao Gao
2023-05-11 9:18 ` Binbin Wu
2023-05-11 10:37 ` Chao Gao
2023-05-10 6:06 ` [PATCH v8 5/6] KVM: x86: Untag address when LAM applicable Binbin Wu
2023-05-11 6:28 ` Chao Gao
2023-05-10 6:06 ` [PATCH v8 6/6] KVM: x86: Expose LAM feature to userspace VMM Binbin Wu
2023-05-12 12:49 ` Huang, Kai
2023-05-16 3:30 ` Binbin Wu
2023-05-25 2:08 ` [PATCH v8 0/6] Linear Address Masking (LAM) KVM Enabling Binbin Wu
2023-05-25 15:59 ` Sean Christopherson
2023-06-06 9:26 ` Binbin Wu
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