From: Babu Moger <babu.moger@amd.com>
To: wanpengli@tencent.com, joro@8bytes.org, x86@kernel.org,
sean.j.christopherson@intel.com, mingo@redhat.com, bp@alien8.de,
hpa@zytor.com, pbonzini@redhat.com, vkuznets@redhat.com,
tglx@linutronix.de, jmattson@google.com
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Subject: [PATCH v2 0/3] INVPCID support for the AMD guests
Date: Tue, 16 Jun 2020 17:03:29 -0500 [thread overview]
Message-ID: <159234483706.6230.13753828995249423191.stgit@bmoger-ubuntu> (raw)
The following series adds the support for PCID/INVPCID on AMD guests.
For the guests with nested page table (NPT) support, the INVPCID
feature works as running it natively. KVM does not need to do any
special handling in this case.
INVPCID interceptions are added only when the guest is running with
shadow page table enabled. In this case the hypervisor needs to
handle the tlbflush based on the type of invpcid instruction type.
AMD documentation for INVPCID feature is available at "AMD64
Architecture Programmer’s Manual Volume 2: System Programming,
Pub. 24593 Rev. 3.34(or later)"
The documentation can be obtained at the links below:
Link: https://www.amd.com/system/files/TechDocs/24593.pdf
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537
---
v2:
- Taken care of few comments from Jim Mattson.
- KVM interceptions added only when tdp is off. No interceptions
when tdp is on.
- Reverted the fault priority to original order.sed the
v1:
https://lore.kernel.org/lkml/159191202523.31436.11959784252237488867.stgit@bmoger-ubuntu/
Babu Moger (3):
KVM: X86: Move handling of INVPCID types to x86
KVM:SVM: Add extended intercept support
KVM:SVM: Enable INVPCID feature on AMD
arch/x86/include/asm/svm.h | 7 +++
arch/x86/include/uapi/asm/svm.h | 2 +
arch/x86/kvm/svm/nested.c | 6 ++-
arch/x86/kvm/svm/svm.c | 55 +++++++++++++++++++++++++++
arch/x86/kvm/svm/svm.h | 18 +++++++++
arch/x86/kvm/trace.h | 12 ++++--
arch/x86/kvm/vmx/vmx.c | 68 ----------------------------------
arch/x86/kvm/x86.c | 79 +++++++++++++++++++++++++++++++++++++++
arch/x86/kvm/x86.h | 3 +
9 files changed, 176 insertions(+), 74 deletions(-)
--
Signature
next reply other threads:[~2020-06-16 22:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-16 22:03 Babu Moger [this message]
2020-06-16 22:03 ` [PATCH v2 1/3] KVM: X86: Move handling of INVPCID types to x86 Babu Moger
2020-06-17 11:56 ` Vitaly Kuznetsov
2020-06-17 14:31 ` Babu Moger
2020-06-16 22:03 ` [PATCH v2 2/3] KVM:SVM: Add extended intercept support Babu Moger
2020-06-16 23:17 ` Jim Mattson
2020-06-17 14:30 ` Babu Moger
2020-06-17 18:11 ` Babu Moger
2020-06-17 20:44 ` Jim Mattson
2020-06-17 21:42 ` Babu Moger
2020-06-17 12:01 ` Vitaly Kuznetsov
2020-06-17 14:31 ` Babu Moger
2020-06-16 22:03 ` [PATCH v2 3/3] KVM:SVM: Enable INVPCID feature on AMD Babu Moger
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