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From: Paul Mackerras <paulus@ozlabs.org>
To: kvm@vger.kernel.org, linuxppc-dev@ozlabs.org, kvm-ppc@vger.kernel.org
Subject: [PATCH 1/5] KVM: PPC: Provide functions for queueing up FP/VEC/VSX unavailable interrupts
Date: Thu, 23 Mar 2017 15:25:59 +1100	[thread overview]
Message-ID: <1490243163-19566-2-git-send-email-paulus@ozlabs.org> (raw)
In-Reply-To: <1490243163-19566-1-git-send-email-paulus@ozlabs.org>

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>
---
 arch/powerpc/include/asm/kvm_ppc.h |  3 +++
 arch/powerpc/kvm/book3s.c          | 18 ++++++++++++++++++
 arch/powerpc/kvm/booke.c           |  5 +++++
 3 files changed, 26 insertions(+)

diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index dd11c4c..4f1f22f 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -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,
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index b6b5c18..0ff0d07 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -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);
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 0514cbd..3c296c2 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -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);
-- 
2.7.4

  reply	other threads:[~2017-03-23  4:26 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-23  4:25 [PATCH 0/5] KVM: PPC: Improve MMIO emulation Paul Mackerras
2017-03-23  4:25 ` Paul Mackerras [this message]
2017-03-23  4:26 ` [PATCH 2/5] KVM: PPC: Book3S: Add MMIO emulation for FP and VSX instructions Paul Mackerras
2017-03-24 11:27   ` kbuild test robot
2017-03-23  4:26 ` [PATCH 3/5] KVM: PPC: Add MMIO emulation for stdx (store doubleword indexed) Paul Mackerras
2017-03-23  4:26 ` [PATCH 4/5] KVM: PPC: Emulation for more integer loads and stores Paul Mackerras
2017-03-23  4:26 ` [PATCH 5/5] KVM: PPC: Add MMIO emulation for remaining floating-point instructions Paul Mackerras

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