diff options
| author | Waiman Long <longman@redhat.com> | 2017-02-20 19:36:03 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-02-21 12:48:06 +0100 |
| commit | 6c62985d576c8a816f528c39204207b9f449d923 (patch) | |
| tree | ceeab09d6f75bcf723959a767d0456aff6ef78fa /arch/x86/kernel | |
| parent | KVM: VMX: use correct vmcs_read/write for guest segment selector/base (diff) | |
| download | linux-6c62985d576c8a816f528c39204207b9f449d923.tar.xz linux-6c62985d576c8a816f528c39204207b9f449d923.zip | |
x86/paravirt: Change vcp_is_preempted() arg type to long
The cpu argument in the function prototype of vcpu_is_preempted()
is changed from int to long. That makes it easier to provide a better
optimized assembly version of that function.
For Xen, vcpu_is_preempted(long) calls xen_vcpu_stolen(int), the
downcast from long to int is not a problem as vCPU number won't exceed
32 bits.
Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/kvm.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/paravirt-spinlocks.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 36bc66416021..334173d2665a 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -589,7 +589,7 @@ out: local_irq_restore(flags); } -__visible bool __kvm_vcpu_is_preempted(int cpu) +__visible bool __kvm_vcpu_is_preempted(long cpu) { struct kvm_steal_time *src = &per_cpu(steal_time, cpu); diff --git a/arch/x86/kernel/paravirt-spinlocks.c b/arch/x86/kernel/paravirt-spinlocks.c index 6d4bf812af45..8caa8a18472b 100644 --- a/arch/x86/kernel/paravirt-spinlocks.c +++ b/arch/x86/kernel/paravirt-spinlocks.c @@ -20,7 +20,7 @@ bool pv_is_native_spin_unlock(void) __raw_callee_save___native_queued_spin_unlock; } -__visible bool __native_vcpu_is_preempted(int cpu) +__visible bool __native_vcpu_is_preempted(long cpu) { return false; } |