From: Wei Liu <wei.liu@kernel.org>
To: Vineeth Pillai <viremana@linux.microsoft.com>
Cc: Lan Tianyu <Tianyu.Lan@microsoft.com>,
Michael Kelley <mikelley@microsoft.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Wei Liu <wei.liu@kernel.org>,
Stephen Hemminger <sthemmin@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"K. Y. Srinivasan" <kys@microsoft.com>,
x86@kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org
Subject: Re: [PATCH v4 2/7] hyperv: SVM enlightened TLB flush support flag
Date: Wed, 28 Apr 2021 13:47:28 +0000 [thread overview]
Message-ID: <20210428134728.jmu6bnjemhid3up7@liuwe-devbox-debian-v2> (raw)
In-Reply-To: <cce3e52fde732ccdc7a34d2eb1e2d59917e4e5e0.1619556430.git.viremana@linux.microsoft.com>
On Tue, Apr 27, 2021 at 08:54:51PM +0000, Vineeth Pillai wrote:
> Bit 22 of HYPERV_CPUID_FEATURES.EDX is specific to SVM and specifies
> support for enlightened TLB flush. With this enlightenment enabled,
> ASID invalidations flushes only gva->hpa entries. To flush TLB entries
> derived from NPT, hypercalls should be used
> (HvFlushGuestPhysicalAddressSpace or HvFlushGuestPhysicalAddressList)
>
> Signed-off-by: Vineeth Pillai <viremana@linux.microsoft.com>
Acked-by: Wei Liu <wei.liu@kernel.org>
next prev parent reply other threads:[~2021-04-28 13:47 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-27 20:54 [PATCH v4 0/7] Hyper-V nested virt enlightenments for SVM Vineeth Pillai
2021-04-27 20:54 ` [PATCH v4 1/7] hyperv: Detect Nested virtualization support " Vineeth Pillai
2021-04-28 14:01 ` Wei Liu
2021-04-27 20:54 ` [PATCH v4 2/7] hyperv: SVM enlightened TLB flush support flag Vineeth Pillai
2021-04-28 13:47 ` Wei Liu [this message]
2021-04-27 20:54 ` [PATCH v4 3/7] KVM: x86: hyper-v: Move the remote TLB flush logic out of vmx Vineeth Pillai
2021-04-27 20:54 ` [PATCH v4 4/7] KVM: SVM: Software reserved fields Vineeth Pillai
2021-04-27 20:54 ` [PATCH v4 5/7] KVM: SVM: hyper-v: Remote TLB flush for SVM Vineeth Pillai
2021-04-27 20:54 ` [PATCH v4 6/7] KVM: SVM: hyper-v: Enlightened MSR-Bitmap support Vineeth Pillai
2021-04-27 20:54 ` [PATCH v4 7/7] KVM: SVM: hyper-v: Direct Virtual Flush support Vineeth Pillai
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