linux-kernel - [PATCH v4 1/6] KVM: Documentation: Add the missing description for guest_mode in kvm_mmu_page

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Message-ID: <20230912184553.1887764-2-mizhang@google.com>
Date:   Tue, 12 Sep 2023 18:45:48 +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 v4 1/6] KVM: Documentation: Add the missing description for
 guest_mode in kvm_mmu_page_role

Add the missing description for guest_mode in kvm_mmu_page_role
description.  guest_mode tells KVM whether a shadow page is used for the L1
or an L2. Update the missing field in documentation.

Signed-off-by: Mingwei Zhang <mizhang@...gle.com>
Reviewed-by: Kai Huang <kai.huang@...el.com>
---
 Documentation/virt/kvm/x86/mmu.rst | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/virt/kvm/x86/mmu.rst b/Documentation/virt/kvm/x86/mmu.rst
index 26f62034b6f3..23c20455d4e7 100644
--- a/Documentation/virt/kvm/x86/mmu.rst
+++ b/Documentation/virt/kvm/x86/mmu.rst
@@ -202,6 +202,8 @@ Shadow pages contain the following information:
     Is 1 if the MMU instance cannot use A/D bits.  EPT did not have A/D
     bits before Haswell; shadow EPT page tables also cannot use A/D bits
     if the L1 hypervisor does not enable them.
+  role.guest_mode:
+    Indicates the shadow page is created for a nested guest.
   role.passthrough:
     The page is not backed by a guest page table, but its first entry
     points to one.  This is set if NPT uses 5-level page tables (host
-- 
2.42.0.283.g2d96d420d3-goog