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Message-ID: <20230801002127.534020-7-mizhang@google.com>
Date: Tue, 1 Aug 2023 00:21:26 +0000
From: Mingwei Zhang <mizhang@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>,
Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, Mingwei Zhang <mizhang@...gle.com>,
Kai Huang <kai.huang@...el.com>,
Jim Mattson <jmattson@...gle.com>,
David Matlack <dmatlack@...gle.com>,
Ben Gardon <bgardon@...gle.com>, Xu Yilun <yilun.xu@...el.com>,
Zhi Wang <zhi.wang.linux@...il.com>,
Randy Dunlap <rdunlap@...radead.org>
Subject: [PATCH v3 6/6] KVM: Documentation: Add the missing description for
tdp_mmu_page into kvm_mmu_page
Add the description for tdp_mmu_page into kvm_mmu_page description.
tdp_mmu_page is a field to differentiate shadow pages from TDP MMU and
non-TDP MMU.
Signed-off-by: Mingwei Zhang <mizhang@...gle.com>
Reviewed-by: Kai Huang <kai.huang@...el.com>
---
Documentation/virt/kvm/x86/mmu.rst | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/virt/kvm/x86/mmu.rst b/Documentation/virt/kvm/x86/mmu.rst
index 581e53fa00a2..3be646a6daf5 100644
--- a/Documentation/virt/kvm/x86/mmu.rst
+++ b/Documentation/virt/kvm/x86/mmu.rst
@@ -283,6 +283,10 @@ Shadow pages contain the following information:
since the last time the page table was actually used; if emulation
is triggered too frequently on this page, KVM will unmap the page
to avoid emulation in the future.
+ tdp_mmu_page:
+ Is 1 if the shadow page is a TDP MMU page. This variable is used to
+ bifurcate the control flows for KVM when walking any data structure that may
+ contain pages from both TDP MMU and shadow MMU.
Reverse map
===========
--
2.41.0.585.gd2178a4bd4-goog
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