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From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: kvm@vger.kernel.org
Cc: "Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>,
	"Jim Mattson" <jmattson@google.com>,
	"Liran Alon" <liran.alon@oracle.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH RFC 2/7] x86/kvm/mmu.c: set get_pdptr hook in kvm_init_shadow_ept_mmu()
Date: Fri, 20 Jul 2018 15:26:21 +0200	[thread overview]
Message-ID: <20180720132626.5975-3-vkuznets@redhat.com> (raw)
In-Reply-To: <20180720132626.5975-1-vkuznets@redhat.com>

kvm_init_shadow_ept_mmu() doesn't set get_pdptr() hook and is this
not a problem just because MMU context is already initialized and this
hook points to kvm_pdptr_read(). As we're intended to use a dedicated
MMU for shadow EPT MMU set this hook explicitly.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
 arch/x86/kvm/mmu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 914e4eea487a..10598dd396ed 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -4570,6 +4570,8 @@ void kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, bool execonly,
 	context->direct_map = false;
 	context->base_role.ad_disabled = !accessed_dirty;
 	context->base_role.guest_mode = 1;
+	context->get_pdptr = kvm_pdptr_read;
+
 	update_permission_bitmask(vcpu, context, true);
 	update_pkru_bitmask(vcpu, context, true);
 	update_last_nonleaf_level(vcpu, context);
-- 
2.14.4


  parent reply	other threads:[~2018-07-20 13:26 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-20 13:26 [PATCH RFC 0/7] x86/kvm/nVMX: optimize MMU switch between L1 and L2 Vitaly Kuznetsov
2018-07-20 13:26 ` [PATCH RFC 1/7] x86/kvm/mmu: make vcpu->mmu a pointer to the current MMU Vitaly Kuznetsov
2018-07-20 13:26 ` Vitaly Kuznetsov [this message]
2018-07-20 13:26 ` [PATCH RFC 3/7] x86/kvm/mmu.c: add kvm_mmu parameter to kvm_mmu_free_roots() Vitaly Kuznetsov
2018-07-20 13:26 ` [PATCH RFC 4/7] x86/kvm/mmu: introduce guest_mmu Vitaly Kuznetsov
2018-07-20 13:26 ` [PATCH RFC 5/7] x86/kvm/mmu: get rid of redundant kvm_mmu_setup() Vitaly Kuznetsov
2018-07-20 13:26 ` [PATCH RFC 6/7] x86/kvm/nVMX: introduce scache for kvm_init_shadow_ept_mmu Vitaly Kuznetsov
2018-07-20 13:26 ` [PATCH RFC 7/7] x86/kvm/nVMX: optimize MMU switch from nested_vmx_load_cr3() Vitaly Kuznetsov

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