From: Suresh Warrier <warrier@linux.vnet.ibm.com>
To: kvm@vger.kernel.org, linuxppc-dev@ozlabs.org
Cc: warrier@linux.vnet.ibm.com, paulus@samba.org, agraf@suse.de,
mpe@ellerman.id.au
Subject: [PATCH 03/14] KVM: PPC: select IRQ_BYPASS_MANAGER
Date: Fri, 26 Feb 2016 12:40:21 -0600 [thread overview]
Message-ID: <1456512032-31286-4-git-send-email-warrier@linux.vnet.ibm.com> (raw)
In-Reply-To: <1456512032-31286-1-git-send-email-warrier@linux.vnet.ibm.com>
Select IRQ_BYPASS_MANAGER for PPC when CONFIG_KVM is set.
Add the PPC producer functions for add and del producer.
Signed-off-by: Suresh Warrier <warrier@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/kvm_ppc.h | 4 ++++
arch/powerpc/kvm/Kconfig | 2 ++
arch/powerpc/kvm/book3s.c | 32 ++++++++++++++++++++++++++++++++
3 files changed, 38 insertions(+)
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index 197a8ac..780a017 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -287,6 +287,10 @@ struct kvmppc_ops {
long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
unsigned long arg);
int (*hcall_implemented)(unsigned long hcall);
+ int (*irq_bypass_add_producer)(struct irq_bypass_consumer *,
+ struct irq_bypass_producer *);
+ void (*irq_bypass_del_producer)(struct irq_bypass_consumer *,
+ struct irq_bypass_producer *);
};
extern struct kvmppc_ops *kvmppc_hv_ops;
diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
index c2024ac..7ac0569 100644
--- a/arch/powerpc/kvm/Kconfig
+++ b/arch/powerpc/kvm/Kconfig
@@ -22,6 +22,8 @@ config KVM
select ANON_INODES
select HAVE_KVM_EVENTFD
select SRCU
+ select IRQ_BYPASS_MANAGER
+ select HAVE_KVM_IRQ_BYPASS
config KVM_BOOK3S_HANDLER
bool
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index b34220d..2492b7e 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -35,6 +35,8 @@
#include <linux/sched.h>
#include <linux/vmalloc.h>
#include <linux/highmem.h>
+#include <linux/irqbypass.h>
+#include <linux/kvm_irqfd.h>
#include "book3s.h"
#include "trace.h"
@@ -921,6 +923,36 @@ int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
return kvm->arch.kvm_ops->hcall_implemented(hcall);
}
+/*
+ * irq_bypass_add_producer and irq_bypass_del_producer are only
+ * useful if the architecture supports PCI passthrough.
+ * irq_bypass_stop and irq_bypass_start are not needed and so
+ * kvm_ops are not defined for them.
+ */
+int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *cons,
+ struct irq_bypass_producer *prod)
+{
+ struct kvm_kernel_irqfd *irqfd =
+ container_of(cons, struct kvm_kernel_irqfd, consumer);
+ struct kvm *kvm = irqfd->kvm;
+
+ if (kvm->arch.kvm_ops->irq_bypass_add_producer)
+ return kvm->arch.kvm_ops->irq_bypass_add_producer(cons, prod);
+
+ return 0;
+}
+
+void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons,
+ struct irq_bypass_producer *prod)
+{
+ struct kvm_kernel_irqfd *irqfd =
+ container_of(cons, struct kvm_kernel_irqfd, consumer);
+ struct kvm *kvm = irqfd->kvm;
+
+ if (kvm->arch.kvm_ops->irq_bypass_del_producer)
+ kvm->arch.kvm_ops->irq_bypass_del_producer(cons, prod);
+}
+
static int kvmppc_book3s_init(void)
{
int r;
--
1.8.3.4
next prev parent reply other threads:[~2016-02-26 18:41 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-26 18:40 [PATCH 00/14] PCI Passthrough Interrupt Optimizations Suresh Warrier
2016-02-26 18:40 ` [PATCH 01/14] powerpc: Add simple cache inhibited MMIO accessors Suresh Warrier
2016-02-26 18:40 ` [PATCH 02/14] KVM: PPC: Book3S HV: Convert kvmppc_read_intr to a C function Suresh Warrier
2016-02-26 18:40 ` Suresh Warrier [this message]
2016-02-26 18:40 ` [PATCH 04/14] KVM: PPC: Book3S HV: Introduce kvmppc_passthru_irqmap Suresh Warrier
2016-02-26 18:40 ` [PATCH 05/14] KVM: PPC: Book3S HV: Enable IRQ bypass Suresh Warrier
2016-02-26 18:40 ` [PATCH 06/14] KVM: PPC: Book3S HV: Caching for passthrough IRQ map Suresh Warrier
2016-02-26 18:40 ` [PATCH 07/14] KVM: PPC: Book3S HV: Handle passthrough interrupts in guest Suresh Warrier
2016-02-26 18:40 ` [PATCH 08/14] KVM: PPC: Book3S HV: Complete passthrough interrupt in host Suresh Warrier
2016-02-26 18:40 ` [PATCH 09/14] KVM: PPC: Book3S HV: Enable KVM real mode handling of passthrough IRQs Suresh Warrier
2016-02-26 18:40 ` [PATCH 10/14] KVM: PPC: Book3S HV: Dump irqmap in debugfs Suresh Warrier
2016-02-26 18:40 ` [PATCH 11/14] KVM: PPC: Book3S HV: Tunable to disable KVM IRQ bypass Suresh Warrier
2016-02-26 18:40 ` [PATCH 12/14] KVM: PPC: Book3S HV: Update irq stats for IRQs handled in real mode Suresh Warrier
2016-02-26 18:40 ` [PATCH 13/14] KVM: PPC: Book3S HV: Change affinity for passthrough IRQ Suresh Warrier
2016-02-26 18:40 ` [PATCH 14/14] KVM: PPC: Book3S HV: Counters for passthrough IRQ stats Suresh Warrier
2016-02-26 18:49 ` [PATCH 00/14] KVM: PPC: Book3S HV: PCI Passthrough Interrupt Optimizations Suresh E. Warrier
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