From: Jim Mattson <jmattson@google.com>
To: Chenyi Qiang <chenyi.qiang@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <sean.j.christopherson@intel.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Joerg Roedel <joro@8bytes.org>, Xiaoyao Li <xiaoyao.li@intel.com>,
kvm list <kvm@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC 1/7] KVM: VMX: Introduce PKS VMCS fields
Date: Mon, 10 Aug 2020 16:17:06 -0700 [thread overview]
Message-ID: <CALMp9eSse8jkSC2B=7s7jbtQ1gnOgZokuhDgeu3-E93pi+g+Xg@mail.gmail.com> (raw)
In-Reply-To: <20200807084841.7112-2-chenyi.qiang@intel.com>
On Fri, Aug 7, 2020 at 1:46 AM Chenyi Qiang <chenyi.qiang@intel.com> 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 domian.
>
> Two VMCS fields {HOST,GUEST}_IA32_PKRS are introduced in
> {host,guest}-state area to store the value 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>
next prev parent reply other threads:[~2020-08-10 23:17 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-07 8:48 [RFC 0/7] KVM: PKS Virtualization support Chenyi Qiang
2020-08-07 8:48 ` [RFC 1/7] KVM: VMX: Introduce PKS VMCS fields Chenyi Qiang
2020-08-10 23:17 ` Jim Mattson [this message]
2020-08-07 8:48 ` [RFC 2/7] KVM: VMX: Expose IA32_PKRS MSR Chenyi Qiang
2020-08-12 21:21 ` Jim Mattson
2020-08-13 5:42 ` Chenyi Qiang
2020-08-13 17:31 ` Jim Mattson
2020-08-18 7:27 ` Chenyi Qiang
2020-08-18 18:23 ` Jim Mattson
2020-08-22 3:28 ` Sean Christopherson
2021-01-26 18:01 ` Paolo Bonzini
2021-01-27 7:55 ` Chenyi Qiang
2021-02-01 9:53 ` Chenyi Qiang
2021-02-01 10:05 ` Paolo Bonzini
2020-08-07 8:48 ` [RFC 3/7] KVM: MMU: Rename the pkru to pkr Chenyi Qiang
2021-01-26 18:16 ` Paolo Bonzini
2020-08-07 8:48 ` [RFC 4/7] KVM: MMU: Refactor pkr_mask to cache condition Chenyi Qiang
2021-01-26 18:16 ` Paolo Bonzini
2021-01-27 3:14 ` Chenyi Qiang
2020-08-07 8:48 ` [RFC 5/7] KVM: MMU: Add support for PKS emulation Chenyi Qiang
2021-01-26 18:23 ` Paolo Bonzini
2021-01-27 3:00 ` Chenyi Qiang
2021-01-27 8:37 ` Paolo Bonzini
2020-08-07 8:48 ` [RFC 6/7] KVM: X86: Expose PKS to guest and userspace Chenyi Qiang
2020-08-13 19:04 ` Jim Mattson
2020-08-14 2:33 ` Chenyi Qiang
2020-09-30 4:36 ` Sean Christopherson
2021-01-26 18:24 ` Paolo Bonzini
2021-01-26 19:56 ` Sean Christopherson
2021-01-26 20:05 ` Paolo Bonzini
2020-08-07 8:48 ` [RFC 7/7] KVM: VMX: Enable PKS for nested VM Chenyi Qiang
2020-08-11 0:05 ` Jim Mattson
2020-08-12 15:00 ` Sean Christopherson
2020-08-12 18:32 ` Jim Mattson
2020-08-13 4:52 ` Chenyi Qiang
2020-08-13 17:52 ` Jim Mattson
2020-08-14 10:07 ` Chenyi Qiang
2020-08-14 17:34 ` Jim Mattson
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