In order to support the generic eventfd infrastructure on PPC, we need
to call into the generic KVM in-kernel device mmio code.
Signed-off-by: Alexander Graf <ag...@suse.de>
---
arch/powerpc/kvm/Kconfig | 1 +
arch/powerpc/kvm/Makefile | 4 +++-
arch/powerpc/kvm/powerpc.c | 17 ++++++++++++++++-
3 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
index 71f0cd9..4730c95 100644
--- a/arch/powerpc/kvm/Kconfig
+++ b/arch/powerpc/kvm/Kconfig
@@ -20,6 +20,7 @@ config KVM
bool
select PREEMPT_NOTIFIERS
select ANON_INODES
+ select HAVE_KVM_EVENTFD
config KVM_BOOK3S_HANDLER
bool
diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile
index c2a0863..cd89658 100644
--- a/arch/powerpc/kvm/Makefile
+++ b/arch/powerpc/kvm/Makefile
@@ -6,7 +6,8 @@ subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
ccflags-y := -Ivirt/kvm -Iarch/powerpc/kvm
-common-objs-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o)
+common-objs-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o \
+ eventfd.o)
CFLAGS_44x_tlb.o := -I.
CFLAGS_e500_tlb.o := -I.
@@ -76,6 +77,7 @@ kvm-book3s_64-builtin-objs-$(CONFIG_KVM_BOOK3S_64_HV) := \
kvm-book3s_64-module-objs := \
../../../virt/kvm/kvm_main.o \
+ ../../../virt/kvm/eventfd.o \
powerpc.o \
emulate.o \
book3s.o \
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index deb0d59..900d8fc 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -314,6 +314,7 @@ int kvm_dev_ioctl_check_extension(long ext)
case KVM_CAP_PPC_IRQ_LEVEL:
case KVM_CAP_ENABLE_CAP:
case KVM_CAP_ONE_REG:
+ case KVM_CAP_IOEVENTFD:
r = 1;
break;
#ifndef CONFIG_KVM_BOOK3S_64_HV
@@ -613,6 +614,13 @@ int kvmppc_handle_load(struct kvm_run *run, struct
kvm_vcpu *vcpu,
vcpu->mmio_is_write = 0;
vcpu->arch.mmio_sign_extend = 0;
+ if (!kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
+ bytes, &run->mmio.data)) {
+ kvmppc_complete_mmio_load(vcpu, run);
+ vcpu->mmio_needed = 0;
+ return EMULATE_DONE;
+ }
+
return EMULATE_DO_MMIO;
}
@@ -622,8 +630,8 @@ int kvmppc_handle_loads(struct kvm_run *run, struct
kvm_vcpu *vcpu,
{
int r;
- r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian);
vcpu->arch.mmio_sign_extend = 1;
+ r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian);
return r;
}
@@ -661,6 +669,13 @@ int kvmppc_handle_store(struct kvm_run *run, struct
kvm_vcpu *vcpu,
}
}
+ if (!kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
+ bytes, &run->mmio.data)) {
+ kvmppc_complete_mmio_load(vcpu, run);
+ vcpu->mmio_needed = 0;
+ return EMULATE_DONE;
+ }
+
return EMULATE_DO_MMIO;
}
--
1.6.0.2
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