x86/virt, x86/platform: Merge 'struct x86_hyper' into 'struct x86_platform' and 'struct x86_init'

Instead of x86_hyper being either NULL on bare metal or a pointer to a
struct hypervisor_x86 in case of the kernel running as a guest merge
the struct into x86_platform and x86_init.

This will remove the need for wrappers making it hard to find out what
is being called. With dummy functions added for all callbacks testing
for a NULL function pointer can be removed, too.

Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: akataria@vmware.com
Cc: boris.ostrovsky@oracle.com
Cc: devel@linuxdriverproject.org
Cc: haiyangz@microsoft.com
Cc: kvm@vger.kernel.org
Cc: kys@microsoft.com
Cc: pbonzini@redhat.com
Cc: rkrcmar@redhat.com
Cc: rusty@rustcorp.com.au
Cc: sthemmin@microsoft.com
Cc: virtualization@lists.linux-foundation.org
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/20171109132739.23465-2-jgross@suse.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index a088b2c47f73..5b2d10c1973a 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -28,6 +28,8 @@ void x86_init_noop(void) { }
 void __init x86_init_uint_noop(unsigned int unused) { }
 int __init iommu_init_noop(void) { return 0; }
 void iommu_shutdown_noop(void) { }
+bool __init bool_x86_init_noop(void) { return false; }
+void x86_op_int_noop(int cpu) { }
 
 /*
  * The platform setup functions are preset with the default functions
@@ -81,6 +83,12 @@ struct x86_init_ops x86_init __initdata = {
 		.init_irq		= x86_default_pci_init_irq,
 		.fixup_irqs		= x86_default_pci_fixup_irqs,
 	},
+
+	.hyper = {
+		.init_platform		= x86_init_noop,
+		.x2apic_available	= bool_x86_init_noop,
+		.init_mem_mapping	= x86_init_noop,
+	},
 };
 
 struct x86_cpuinit_ops x86_cpuinit = {
@@ -101,6 +109,7 @@ struct x86_platform_ops x86_platform __ro_after_init = {
 	.get_nmi_reason			= default_get_nmi_reason,
 	.save_sched_clock_state 	= tsc_save_sched_clock_state,
 	.restore_sched_clock_state 	= tsc_restore_sched_clock_state,
+	.hyper.pin_vcpu			= x86_op_int_noop,
 };
 
 EXPORT_SYMBOL_GPL(x86_platform);