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KVM: PPC: Provide functions for queueing up FP/VEC/VSX unavailable interrupts

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This provides functions that can be used for generating interrupts
indicating that a given functional unit (floating point, vector, or
VSX) is unavailable.  These functions will be used in instruction
emulation code.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Paul Mackerras 2017-03-22 21:02:08 +11:00
parent f7b1a77d3b
commit 307d927967
3 changed files with 26 additions and 0 deletions
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3
arch/powerpc/include/asm/kvm_ppc.h
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@ -132,6 +132,9 @@ extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu);
extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu);
extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu);
extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,

18
arch/powerpc/kvm/book3s.c
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@ -197,6 +197,24 @@ void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
}
EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu)
{
/* might as well deliver this straight away */
kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, 0);
}
void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu)
{
/* might as well deliver this straight away */
kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_ALTIVEC, 0);
}
void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu)
{
/* might as well deliver this straight away */
kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_VSX, 0);
}
void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
{
kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);

5
arch/powerpc/kvm/booke.c
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@ -300,6 +300,11 @@ void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong esr_flags)
kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
}
void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu)
{
kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
}
void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
{
kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DECREMENTER);