43 lines
1 KiB
C
43 lines
1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Split spinlock implementation out into its own file, so it can be
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* compiled in a FTRACE-compatible way.
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*/
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#include <linux/spinlock.h>
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#include <linux/export.h>
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#include <linux/jump_label.h>
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#include <asm/paravirt.h>
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__visible void __native_queued_spin_unlock(struct qspinlock *lock)
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{
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native_queued_spin_unlock(lock);
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}
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PV_CALLEE_SAVE_REGS_THUNK(__native_queued_spin_unlock);
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bool pv_is_native_spin_unlock(void)
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{
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return pv_ops.lock.queued_spin_unlock.func ==
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__raw_callee_save___native_queued_spin_unlock;
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}
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__visible bool __native_vcpu_is_preempted(long cpu)
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{
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return false;
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}
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PV_CALLEE_SAVE_REGS_THUNK(__native_vcpu_is_preempted);
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bool pv_is_native_vcpu_is_preempted(void)
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{
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return pv_ops.lock.vcpu_is_preempted.func ==
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__raw_callee_save___native_vcpu_is_preempted;
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}
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void __init paravirt_set_cap(void)
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{
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if (!pv_is_native_spin_unlock())
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setup_force_cpu_cap(X86_FEATURE_PVUNLOCK);
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if (!pv_is_native_vcpu_is_preempted())
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setup_force_cpu_cap(X86_FEATURE_VCPUPREEMPT);
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}
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