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Date: Mon, 23 Jul 2018 07:47:57 +0000
From: Tianyu Lan <Tianyu.Lan@...rosoft.com>
To: unlisted-recipients:; (no To-header on input)
CC: Tianyu Lan <Tianyu.Lan@...rosoft.com>,
"pbonzini@...hat.com" <pbonzini@...hat.com>,
"rkrcmar@...hat.com" <rkrcmar@...hat.com>,
"tglx@...utronix.de" <tglx@...utronix.de>,
"mingo@...hat.com" <mingo@...hat.com>,
"hpa@...or.com" <hpa@...or.com>, "x86@...nel.org" <x86@...nel.org>,
"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] KVM: Compile hv_remote_flush_tlb() and check_ept_pointer()
when CONFIG_HYPERV is enabled.
This patch is to avoid compilation warning when CONFIG_HYPERV isn't enabled.
Signed-off-by: Lan Tianyu <Tianyu.Lan@...rosoft.com>
---
arch/x86/kvm/vmx.c | 84 +++++++++++++++++++++++++++---------------------------
1 file changed, 42 insertions(+), 42 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 16ea8b629416..2f379e575940 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1367,6 +1367,48 @@ static void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf)
* GUEST_IA32_RTIT_CTL = 0x00002814,
*/
}
+
+/* check_ept_pointer() should be under protection of ept_pointer_lock. */
+static void check_ept_pointer(struct kvm *kvm)
+{
+ struct kvm_vcpu *vcpu;
+ u64 tmp_eptp = INVALID_PAGE;
+ int i;
+
+ kvm_for_each_vcpu(i, vcpu, kvm) {
+ if (!VALID_PAGE(tmp_eptp)) {
+ tmp_eptp = to_vmx(vcpu)->ept_pointer;
+ } else if (tmp_eptp != to_vmx(vcpu)->ept_pointer) {
+ to_kvm_vmx(kvm)->ept_pointers_match
+ = EPT_POINTERS_MISMATCH;
+ return;
+ }
+ }
+
+ to_kvm_vmx(kvm)->ept_pointers_match = EPT_POINTERS_MATCH;
+}
+
+static int hv_remote_flush_tlb(struct kvm *kvm)
+{
+ int ret;
+
+ spin_lock(&to_kvm_vmx(kvm)->ept_pointer_lock);
+
+ if (to_kvm_vmx(kvm)->ept_pointers_match == EPT_POINTERS_CHECK)
+ check_ept_pointer(kvm);
+
+ if (to_kvm_vmx(kvm)->ept_pointers_match != EPT_POINTERS_MATCH) {
+ ret = -ENOTSUPP;
+ goto out;
+ }
+
+ ret = hyperv_flush_guest_mapping(
+ to_vmx(kvm_get_vcpu(kvm, 0))->ept_pointer);
+
+out:
+ spin_unlock(&to_kvm_vmx(kvm)->ept_pointer_lock);
+ return ret;
+}
#else /* !IS_ENABLED(CONFIG_HYPERV) */
static inline void evmcs_write64(unsigned long field, u64 value) {}
static inline void evmcs_write32(unsigned long field, u32 value) {}
@@ -4827,48 +4869,6 @@ static inline void __vmx_flush_tlb(struct kvm_vcpu *vcpu, int vpid,
}
}
-/* check_ept_pointer() should be under protection of ept_pointer_lock. */
-static void check_ept_pointer(struct kvm *kvm)
-{
- struct kvm_vcpu *vcpu;
- u64 tmp_eptp = INVALID_PAGE;
- int i;
-
- kvm_for_each_vcpu(i, vcpu, kvm) {
- if (!VALID_PAGE(tmp_eptp)) {
- tmp_eptp = to_vmx(vcpu)->ept_pointer;
- } else if (tmp_eptp != to_vmx(vcpu)->ept_pointer) {
- to_kvm_vmx(kvm)->ept_pointers_match
- = EPT_POINTERS_MISMATCH;
- return;
- }
- }
-
- to_kvm_vmx(kvm)->ept_pointers_match = EPT_POINTERS_MATCH;
-}
-
-static int hv_remote_flush_tlb(struct kvm *kvm)
-{
- int ret;
-
- spin_lock(&to_kvm_vmx(kvm)->ept_pointer_lock);
-
- if (to_kvm_vmx(kvm)->ept_pointers_match == EPT_POINTERS_CHECK)
- check_ept_pointer(kvm);
-
- if (to_kvm_vmx(kvm)->ept_pointers_match != EPT_POINTERS_MATCH) {
- ret = -ENOTSUPP;
- goto out;
- }
-
- ret = hyperv_flush_guest_mapping(
- to_vmx(kvm_get_vcpu(kvm, 0))->ept_pointer);
-
-out:
- spin_unlock(&to_kvm_vmx(kvm)->ept_pointer_lock);
- return ret;
-}
-
static void vmx_flush_tlb(struct kvm_vcpu *vcpu, bool invalidate_gpa)
{
__vmx_flush_tlb(vcpu, to_vmx(vcpu)->vpid, invalidate_gpa);
--
2.14.3
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