Two stubs are added:
o kvm_arch_has_vcpu_debugfs(): must return true if the arch
supports creating debugfs entries in the vcpu debugfs dir
(which will be implemented by the next commit)
o kvm_arch_create_vcpu_debugfs(): code that creates debugfs
entries in the vcpu debugfs dir
For x86, this commit introduces a new file to avoid growing
arch/x86/kvm/x86.c even more.
Signed-off-by: Luiz Capitulino <lcapitulino@xxxxxxxxxx>
---
arch/arm/kvm/arm.c | 10 ++++++++++
arch/mips/kvm/mips.c | 10 ++++++++++
arch/powerpc/kvm/powerpc.c | 10 ++++++++++
arch/s390/kvm/kvm-s390.c | 10 ++++++++++
arch/x86/kvm/Makefile | 2 +-
arch/x86/kvm/debugfs.c | 20 ++++++++++++++++++++
include/linux/kvm_host.h | 3 +++
7 files changed, 64 insertions(+), 1 deletion(-)
create mode 100644 arch/x86/kvm/debugfs.c
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index 75f130e..c638935 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -144,6 +144,16 @@ out_fail_alloc:
return ret;
}
+bool kvm_arch_has_vcpu_debugfs(void)
+{
+ return false;
+}
+
+int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
+{
+ return 0;
+}
+
int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
{
return VM_FAULT_SIGBUS;
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index a6ea084..49b25e7 100644
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -140,6 +140,16 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
return 0;
}
+bool kvm_arch_has_vcpu_debugfs(void)
+{
+ return false;
+}
+
+int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
+{
+ return 0;
+}
+
void kvm_mips_free_vcpus(struct kvm *kvm)
{
unsigned int i;
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 6ce40dd..b1d194d 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -436,6 +436,16 @@ err_out:
return -EINVAL;
}
+bool kvm_arch_has_vcpu_debugfs(void)
+{
+ return false;
+}
+
+int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
+{
+ return 0;
+}
+
void kvm_arch_destroy_vm(struct kvm *kvm)
{
unsigned int i;
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index f142215..60e7f00 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -1490,6 +1490,16 @@ out_err:
return rc;
}
+bool kvm_arch_has_vcpu_debugfs(void)
+{
+ return false;
+}
+
+int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
+{
+ return 0;
+}
+
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
{
VCPU_EVENT(vcpu, 3, "%s", "free cpu");
diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index 464fa47..3bff207 100644
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -13,7 +13,7 @@ kvm-$(CONFIG_KVM_ASYNC_PF) += $(KVM)/async_pf.o
kvm-y += x86.o mmu.o emulate.o i8259.o irq.o lapic.o \
i8254.o ioapic.o irq_comm.o cpuid.o pmu.o mtrr.o \
- hyperv.o page_track.o
+ hyperv.o page_track.o debugfs.o
kvm-$(CONFIG_KVM_DEVICE_ASSIGNMENT) += assigned-dev.o iommu.o
diff --git a/arch/x86/kvm/debugfs.c b/arch/x86/kvm/debugfs.c
new file mode 100644
index 0000000..bb5e9f6
--- /dev/null
+++ b/arch/x86/kvm/debugfs.c
@@ -0,0 +1,20 @@
+/*
+ * Kernel-based Virtual Machine driver for Linux
+ *
+ * Copyright 2016 Red Hat, Inc. and/or its affiliates.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+#include <linux/kvm_host.h>
+
+bool kvm_arch_has_vcpu_debugfs(void)
+{
+ return false;
+}
+
+int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
+{
+ return 0;
+}
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 9c28b4d..5486ff9 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -749,6 +749,9 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
+bool kvm_arch_has_vcpu_debugfs(void);
+int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu);
+
int kvm_arch_hardware_enable(void);
void kvm_arch_hardware_disable(void);
int kvm_arch_hardware_setup(void);
--
2.5.5
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
