linux-kernel - Re: [PATCH v3 14/37] KVM: x86: Move "flush guest's TLB" logic to separate kvm_x86

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Message-ID: <20200325154810.GE14294@linux.intel.com>
Date:   Wed, 25 Mar 2020 08:48:10 -0700
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Ben Gardon <bgardon@...gle.com>,
        Junaid Shahid <junaids@...gle.com>,
        Liran Alon <liran.alon@...cle.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        John Haxby <john.haxby@...cle.com>,
        Miaohe Lin <linmiaohe@...wei.com>,
        Tom Lendacky <thomas.lendacky@....com>
Subject: Re: [PATCH v3 14/37] KVM: x86: Move "flush guest's TLB" logic to
 separate kvm_x86_ops hook

On Wed, Mar 25, 2020 at 11:23:41AM +0100, Vitaly Kuznetsov wrote:
> Sean Christopherson <sean.j.christopherson@...el.com> writes:
> I *think* I've commented on the previous version that we also have
> hyperv-style PV TLB flush and this will likely need to be switched to
> tlb_flush_guest().

Oh, you most definitely commented about HyperV's PV TLB flush, looking at
that code is what led me down this rabbit hole :-)