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From:   Andrea Arcangeli <aarcange@redhat.com>
To:     kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Cc:     Paolo Bonzini <pbonzini@redhat.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Sean Christopherson <sean.j.christopherson@intel.com>
Subject: [PATCH 04/13] KVM: monolithic: x86: handle the request_immediate_exit variation
Date:   Mon,  4 Nov 2019 17:59:52 -0500
Message-Id: <20191104230001.27774-5-aarcange@redhat.com>
In-Reply-To: <20191104230001.27774-1-aarcange@redhat.com>
References: <20191104230001.27774-1-aarcange@redhat.com>
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request_immediate_exit is one of those few cases where the pointer to
function of the method isn't fixed at build time and it requires
special handling because hardware_setup() may override it at runtime.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
---
 arch/x86/kvm/vmx/vmx.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 1a58ae38c8f2..9c5f0c67b899 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7103,7 +7103,10 @@ void kvm_x86_set_supported_cpuid(u32 func, struct kv=
m_cpuid_entry2 *entry)
=20
 void kvm_x86_request_immediate_exit(struct kvm_vcpu *vcpu)
 {
-=09to_vmx(vcpu)->req_immediate_exit =3D true;
+=09if (likely(enable_preemption_timer))
+=09=09to_vmx(vcpu)->req_immediate_exit =3D true;
+=09else
+=09=09__kvm_request_immediate_exit(vcpu);
 }
=20
 int kvm_x86_check_intercept(struct kvm_vcpu *vcpu,