From: Sean Christopherson <seanjc@google.com>
To: Chenyi Qiang <chenyi.qiang@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Xiaoyao Li <xiaoyao.li@intel.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 1/7] KVM: VMX: Introduce PKS VMCS fields
Date: Wed, 30 Mar 2022 20:05:11 +0000 [thread overview]
Message-ID: <YkS398j08ZuXQgUx@google.com> (raw)
In-Reply-To: <20220221080840.7369-2-chenyi.qiang@intel.com>
On Mon, Feb 21, 2022, Chenyi Qiang wrote:
> PKS(Protection Keys for Supervisor Pages) is a feature that extends the
> Protection Key architecture to support thread-specific permission
> restrictions on supervisor pages.
>
> A new PKS MSR(PKRS) is defined in kernel to support PKS, which holds a
> set of permissions associated with each protection domain.
>
> Two VMCS fields {HOST,GUEST}_IA32_PKRS are introduced in
> {host,guest}-state area to store the respective values of PKRS.
>
> Every VM exit saves PKRS into guest-state area.
> If VM_EXIT_LOAD_IA32_PKRS = 1, VM exit loads PKRS from the host-state
> area.
> If VM_ENTRY_LOAD_IA32_PKRS = 1, VM entry loads PKRS from the guest-state
> area.
>
> Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
> Reviewed-by: Jim Mattson <jmattson@google.com>
> ---
Reviewed-by: Sean Christopherson <seanjc@google.com>
next prev parent reply other threads:[~2022-03-30 20:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-21 8:08 [PATCH v6 0/7] KVM: PKS Virtualization support Chenyi Qiang
2022-02-21 8:08 ` [PATCH v6 1/7] KVM: VMX: Introduce PKS VMCS fields Chenyi Qiang
2022-03-30 20:05 ` Sean Christopherson [this message]
2022-02-21 8:08 ` [PATCH v6 2/7] KVM: VMX: Add proper cache tracking for PKRS Chenyi Qiang
2022-03-30 20:42 ` Sean Christopherson
2022-03-31 5:39 ` Chenyi Qiang
2022-02-21 8:08 ` [PATCH v6 3/7] KVM: X86: Expose IA32_PKRS MSR Chenyi Qiang
2022-02-21 8:08 ` [PATCH v6 4/7] KVM: MMU: Rename the pkru to pkr Chenyi Qiang
2022-02-21 8:08 ` [PATCH v6 5/7] KVM: MMU: Add support for PKS emulation Chenyi Qiang
2022-03-30 21:27 ` Sean Christopherson
2022-03-31 5:43 ` Chenyi Qiang
2022-02-21 8:08 ` [PATCH v6 6/7] KVM: VMX: Expose PKS to guest Chenyi Qiang
2022-03-30 21:30 ` Sean Christopherson
2022-02-21 8:08 ` [PATCH v6 7/7] KVM: VMX: Enable PKS for nested VM Chenyi Qiang
2022-03-30 21:47 ` Sean Christopherson
2022-03-31 6:08 ` Chenyi Qiang
2022-03-07 6:09 ` [PATCH v6 0/7] KVM: PKS Virtualization support Chenyi Qiang
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