[v3,1/6] KVM: X86: Add kvm hypervisor init time platform setup callback

Commit Message

Wanpeng Li July 3, 2018, 6:21 a.m. UTC

From: Wanpeng Li <[e-mail]>

Add kvm hypervisor init time platform setup callback which 
will be used to replace native apic hooks by pararvirtual 
hooks.

Cc: Paolo Bonzini <[e-mail]>
Cc: Radim Krčmář <[e-mail]>
Cc: Vitaly Kuznetsov <[e-mail]>
Signed-off-by: Wanpeng Li <[e-mail]>
---
 arch/x86/kernel/kvm.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

Patch

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 5b2300b..591bcf2 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -624,12 +624,22 @@  static uint32_t __init kvm_detect(void)
 	return kvm_cpuid_base();
 }
 
+static void __init kvm_apic_init(void)
+{
+}
+
+static void __init kvm_init_platform(void)
+{
+	x86_platform.apic_post_init = kvm_apic_init;
+}
+
 const __initconst struct hypervisor_x86 x86_hyper_kvm = {
 	.name			= "KVM",
 	.detect			= kvm_detect,
 	.type			= X86_HYPER_KVM,
 	.init.guest_late_init	= kvm_guest_init,
 	.init.x2apic_available	= kvm_para_available,
+	.init.init_platform	= kvm_init_platform,
 };
 
 static __init int activate_jump_labels(void)