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Message-Id: <20211227151320.454785031@linuxfoundation.org>
Date: Mon, 27 Dec 2021 16:31:09 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Sean Christopherson <seanjc@...gle.com>,
Maxim Levitsky <mlevitsk@...hat.com>,
Paolo Bonzini <pbonzini@...hat.com>
Subject: [PATCH 4.19 32/38] KVM: VMX: Fix stale docs for kvm-intel.emulate_invalid_guest_state
From: Sean Christopherson <seanjc@...gle.com>
commit 0ff29701ffad9a5d5a24344d8b09f3af7b96ffda upstream.
Update the documentation for kvm-intel's emulate_invalid_guest_state to
rectify the description of KVM's default behavior, and to document that
the behavior and thus parameter only applies to L1.
Fixes: a27685c33acc ("KVM: VMX: Emulate invalid guest state by default")
Signed-off-by: Sean Christopherson <seanjc@...gle.com>
Message-Id: <20211207193006.120997-4-seanjc@...gle.com>
Reviewed-by: Maxim Levitsky <mlevitsk@...hat.com>
Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
Documentation/admin-guide/kernel-parameters.txt | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -2019,8 +2019,12 @@
Default is 1 (enabled)
kvm-intel.emulate_invalid_guest_state=
- [KVM,Intel] Enable emulation of invalid guest states
- Default is 0 (disabled)
+ [KVM,Intel] Disable emulation of invalid guest state.
+ Ignored if kvm-intel.enable_unrestricted_guest=1, as
+ guest state is never invalid for unrestricted guests.
+ This param doesn't apply to nested guests (L2), as KVM
+ never emulates invalid L2 guest state.
+ Default is 1 (enabled)
kvm-intel.flexpriority=
[KVM,Intel] Disable FlexPriority feature (TPR shadow).
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