Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini:
 "x86:

   - Support for userspace to emulate Xen hypercalls

   - Raise the maximum number of user memslots

   - Scalability improvements for the new MMU.

     Instead of the complex "fast page fault" logic that is used in
     mmu.c, tdp_mmu.c uses an rwlock so that page faults are concurrent,
     but the code that can run against page faults is limited. Right now
     only page faults take the lock for reading; in the future this will
     be extended to some cases of page table destruction. I hope to
     switch the default MMU around 5.12-rc3 (some testing was delayed
     due to Chinese New Year).

   - Cleanups for MAXPHYADDR checks

   - Use static calls for vendor-specific callbacks

   - On AMD, use VMLOAD/VMSAVE to save and restore host state

   - Stop using deprecated jump label APIs

   - Workaround for AMD erratum that made nested virtualization
     unreliable

   - Support for LBR emulation in the guest

   - Support for communicating bus lock vmexits to userspace

   - Add support for SEV attestation command

   - Miscellaneous cleanups

  PPC:

   - Support for second data watchpoint on POWER10

   - Remove some complex workarounds for buggy early versions of POWER9

   - Guest entry/exit fixes

  ARM64:

   - Make the nVHE EL2 object relocatable

   - Cleanups for concurrent translation faults hitting the same page

   - Support for the standard TRNG hypervisor call

   - A bunch of small PMU/Debug fixes

   - Simplification of the early init hypercall handling

  Non-KVM changes (with acks):

   - Detection of contended rwlocks (implemented only for qrwlocks,
     because KVM only needs it for x86)

   - Allow __DISABLE_EXPORTS from assembly code

   - Provide a saner follow_pfn replacements for modules"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (192 commits)
  KVM: x86/xen: Explicitly pad struct compat_vcpu_info to 64 bytes
  KVM: selftests: Don't bother mapping GVA for Xen shinfo test
  KVM: selftests: Fix hex vs. decimal snafu in Xen test
  KVM: selftests: Fix size of memslots created by Xen tests
  KVM: selftests: Ignore recently added Xen tests' build output
  KVM: selftests: Add missing header file needed by xAPIC IPI tests
  KVM: selftests: Add operand to vmsave/vmload/vmrun in svm.c
  KVM: SVM: Make symbol 'svm_gp_erratum_intercept' static
  locking/arch: Move qrwlock.h include after qspinlock.h
  KVM: PPC: Book3S HV: Fix host radix SLB optimisation with hash guests
  KVM: PPC: Book3S HV: Ensure radix guest has no SLB entries
  KVM: PPC: Don't always report hash MMU capability for P9 < DD2.2
  KVM: PPC: Book3S HV: Save and restore FSCR in the P9 path
  KVM: PPC: remove unneeded semicolon
  KVM: PPC: Book3S HV: Use POWER9 SLBIA IH=6 variant to clear SLB
  KVM: PPC: Book3S HV: No need to clear radix host SLB before loading HPT guest
  KVM: PPC: Book3S HV: Fix radix guest SLB side channel
  KVM: PPC: Book3S HV: Remove support for running HPT guest on RPT host without mixed mode support
  KVM: PPC: Book3S HV: Introduce new capability for 2nd DAWR
  KVM: PPC: Book3S HV: Add infrastructure to support 2nd DAWR
  ...

1 files changed, 8 insertions, 12 deletions

diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index 4fb86e3a9dd3..997c45a5963a 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -6,6 +6,8 @@
 
 #include <linux/kvm_host.h>
 
+#include "hyperv.h"
+
 #define KVM_APIC_INIT		0
 #define KVM_APIC_SIPI		1
 #define KVM_APIC_LVT_NUM	6
@@ -125,13 +127,7 @@ int kvm_x2apic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
 int kvm_hv_vapic_msr_write(struct kvm_vcpu *vcpu, u32 msr, u64 data);
 int kvm_hv_vapic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
 
-static inline bool kvm_hv_vapic_assist_page_enabled(struct kvm_vcpu *vcpu)
-{
-	return vcpu->arch.hyperv.hv_vapic & HV_X64_MSR_VP_ASSIST_PAGE_ENABLE;
-}
-
 int kvm_lapic_enable_pv_eoi(struct kvm_vcpu *vcpu, u64 data, unsigned long len);
-void kvm_lapic_init(void);
 void kvm_lapic_exit(void);
 
 #define VEC_POS(v) ((v) & (32 - 1))
@@ -172,29 +168,29 @@ static inline void kvm_lapic_set_reg(struct kvm_lapic *apic, int reg_off, u32 va
 	__kvm_lapic_set_reg(apic->regs, reg_off, val);
 }
 
-extern struct static_key kvm_no_apic_vcpu;
+DECLARE_STATIC_KEY_FALSE(kvm_has_noapic_vcpu);
 
 static inline bool lapic_in_kernel(struct kvm_vcpu *vcpu)
 {
-	if (static_key_false(&kvm_no_apic_vcpu))
+	if (static_branch_unlikely(&kvm_has_noapic_vcpu))
 		return vcpu->arch.apic;
 	return true;
 }
 
-extern struct static_key_deferred apic_hw_disabled;
+extern struct static_key_false_deferred apic_hw_disabled;
 
 static inline int kvm_apic_hw_enabled(struct kvm_lapic *apic)
 {
-	if (static_key_false(&apic_hw_disabled.key))
+	if (static_branch_unlikely(&apic_hw_disabled.key))
 		return apic->vcpu->arch.apic_base & MSR_IA32_APICBASE_ENABLE;
 	return MSR_IA32_APICBASE_ENABLE;
 }
 
-extern struct static_key_deferred apic_sw_disabled;
+extern struct static_key_false_deferred apic_sw_disabled;
 
 static inline bool kvm_apic_sw_enabled(struct kvm_lapic *apic)
 {
-	if (static_key_false(&apic_sw_disabled.key))
+	if (static_branch_unlikely(&apic_sw_disabled.key))
 		return apic->sw_enabled;
 	return true;
 }