linux-kernel - [PATCH v2 22/66] KVM: x86: Make kvm_mpx

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Message-Id: <20200302235709.27467-23-sean.j.christopherson@intel.com>
Date:   Mon,  2 Mar 2020 15:56:25 -0800
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Xiaoyao Li <xiaoyao.li@...el.com>
Subject: [PATCH v2 22/66] KVM: x86: Make kvm_mpx_supported() an inline function

Expose kvm_mpx_supported() as a static inline so that it can be inlined
in kvm_intel.ko.

No functional change intended.

Reviewed-by: Xiaoyao Li <xiaoyao.li@...el.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@...hat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@...el.com>
---
 arch/x86/kvm/cpuid.c | 6 ------
 arch/x86/kvm/cpuid.h | 1 -
 arch/x86/kvm/x86.h   | 5 +++++
 3 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 54af2c19388b..1ff16300a468 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -45,12 +45,6 @@ static u32 xstate_required_size(u64 xstate_bv, bool compacted)
 	return ret;
 }
 
-bool kvm_mpx_supported(void)
-{
-	return supported_xcr0 & (XFEATURE_MASK_BNDREGS | XFEATURE_MASK_BNDCSR);
-}
-EXPORT_SYMBOL_GPL(kvm_mpx_supported);
-
 #define F feature_bit
 
 int kvm_update_cpuid(struct kvm_vcpu *vcpu)
diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h
index 7366c618aa04..c1ac0995843d 100644
--- a/arch/x86/kvm/cpuid.h
+++ b/arch/x86/kvm/cpuid.h
@@ -7,7 +7,6 @@
 #include <asm/processor.h>
 
 int kvm_update_cpuid(struct kvm_vcpu *vcpu);
-bool kvm_mpx_supported(void);
 struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu,
 					      u32 function, u32 index);
 int kvm_dev_ioctl_get_cpuid(struct kvm_cpuid2 *cpuid,
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index 02b49ee49e24..bfac4a80956c 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -283,6 +283,11 @@ enum exit_fastpath_completion handle_fastpath_set_msr_irqoff(struct kvm_vcpu *vc
 extern u64 host_xcr0;
 extern u64 supported_xcr0;
 
+static inline bool kvm_mpx_supported(void)
+{
+	return supported_xcr0 & (XFEATURE_MASK_BNDREGS | XFEATURE_MASK_BNDCSR);
+}
+
 extern unsigned int min_timer_period_us;
 
 extern bool enable_vmware_backdoor;
-- 
2.24.1