Implement a simple library to do perform vGIC-v3
setup from a host of view. This includes creating
a vGIC device, setting up distributor and redistributor
attributes, and mapping the guest physical addresses.
Signed-off-by: Raghavendra Rao Ananta <[email protected]>
---
tools/testing/selftests/kvm/Makefile | 2 +-
.../selftests/kvm/include/aarch64/vgic.h | 14 ++++
.../testing/selftests/kvm/lib/aarch64/vgic.c | 67 +++++++++++++++++++
3 files changed, 82 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h
create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.c
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
index 5476a8ddef60..8342f65c1d96 100644
--- a/tools/testing/selftests/kvm/Makefile
+++ b/tools/testing/selftests/kvm/Makefile
@@ -35,7 +35,7 @@ endif
LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c
LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S
-LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c
+LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c lib/aarch64/vgic.c
LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c
TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_test
diff --git a/tools/testing/selftests/kvm/include/aarch64/vgic.h b/tools/testing/selftests/kvm/include/aarch64/vgic.h
new file mode 100644
index 000000000000..45bbf238147a
--- /dev/null
+++ b/tools/testing/selftests/kvm/include/aarch64/vgic.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ARM Generic Interrupt Controller (GIC) host specific defines
+ */
+
+#ifndef SELFTEST_KVM_VGIC_H
+#define SELFTEST_KVM_VGIC_H
+
+#include <linux/kvm.h>
+
+int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
+ uint64_t gicd_base_gpa, uint64_t gicr_base_gpa, uint32_t slot);
+
+#endif /* SELFTEST_KVM_VGIC_H */
diff --git a/tools/testing/selftests/kvm/lib/aarch64/vgic.c b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
new file mode 100644
index 000000000000..a0e4b986d335
--- /dev/null
+++ b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ARM Generic Interrupt Controller (GIC) v3 host support
+ */
+
+#include <linux/kvm.h>
+#include <linux/sizes.h>
+
+#include "kvm_util.h"
+
+#define VGIC_V3_GICD_SZ (SZ_64K)
+#define VGIC_V3_GICR_SZ (2 * SZ_64K)
+
+#define REDIST_REGION_ATTR_ADDR(count, base, flags, index) \
+ (((uint64_t)(count) << 52) | \
+ ((uint64_t)((base) >> 16) << 16) | \
+ ((uint64_t)(flags) << 12) | \
+ index)
+
+static void vgic_v3_map(struct kvm_vm *vm, uint64_t addr, unsigned int size)
+{
+ unsigned int n_pages = DIV_ROUND_UP(size, vm_get_page_size(vm));
+
+ virt_map(vm, addr, addr, n_pages);
+}
+
+/*
+ * vGIC-v3 default host setup
+ *
+ * Input args:
+ * vm - KVM VM
+ * nr_vcpus - Number of vCPUs for this VM
+ * gicd_base_gpa - Guest Physical Address of the Distributor region
+ * gicr_base_gpa - Guest Physical Address of the Redistributor region
+ *
+ * Output args: None
+ *
+ * Return: GIC file-descriptor or negative error code upon failure
+ *
+ * The function creates a vGIC-v3 device and maps the distributor and
+ * redistributor regions of the guest.
+ */
+int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
+ uint64_t gicd_base_gpa, uint64_t gicr_base_gpa)
+{
+ uint64_t redist_attr;
+ int gic_fd;
+
+ TEST_ASSERT(nr_vcpus <= KVM_MAX_VCPUS,
+ "Invalid number of CPUs: %u\n", nr_vcpus);
+
+ gic_fd = kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V3, false);
+
+ kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
+ KVM_VGIC_V3_ADDR_TYPE_DIST, &gicd_base_gpa, true);
+ vgic_v3_map(vm, gicd_base_gpa, VGIC_V3_GICD_SZ);
+
+ redist_attr = REDIST_REGION_ATTR_ADDR(nr_vcpus, gicr_base_gpa, 0, 0);
+ kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
+ KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &redist_attr, true);
+ vgic_v3_map(vm, gicr_base_gpa, VGIC_V3_GICR_SZ * nr_vcpus);
+
+ kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
+ KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true);
+
+ return gic_fd;
+}
--
2.33.0.153.gba50c8fa24-goog
On Wed, Sep 01, 2021 at 09:14:10PM +0000, Raghavendra Rao Ananta wrote:
> Implement a simple library to do perform vGIC-v3
> setup from a host of view. This includes creating
> a vGIC device, setting up distributor and redistributor
> attributes, and mapping the guest physical addresses.
>
> Signed-off-by: Raghavendra Rao Ananta <[email protected]>
>
> ---
> tools/testing/selftests/kvm/Makefile | 2 +-
> .../selftests/kvm/include/aarch64/vgic.h | 14 ++++
> .../testing/selftests/kvm/lib/aarch64/vgic.c | 67 +++++++++++++++++++
> 3 files changed, 82 insertions(+), 1 deletion(-)
> create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h
> create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.c
>
> diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
> index 5476a8ddef60..8342f65c1d96 100644
> --- a/tools/testing/selftests/kvm/Makefile
> +++ b/tools/testing/selftests/kvm/Makefile
> @@ -35,7 +35,7 @@ endif
>
> LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c
> LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S
> -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c
> +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c lib/aarch64/vgic.c
> LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c
>
> TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_test
> diff --git a/tools/testing/selftests/kvm/include/aarch64/vgic.h b/tools/testing/selftests/kvm/include/aarch64/vgic.h
> new file mode 100644
> index 000000000000..45bbf238147a
> --- /dev/null
> +++ b/tools/testing/selftests/kvm/include/aarch64/vgic.h
> @@ -0,0 +1,14 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * ARM Generic Interrupt Controller (GIC) host specific defines
> + */
> +
> +#ifndef SELFTEST_KVM_VGIC_H
> +#define SELFTEST_KVM_VGIC_H
> +
> +#include <linux/kvm.h>
> +
> +int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
> + uint64_t gicd_base_gpa, uint64_t gicr_base_gpa, uint32_t slot);
> +
> +#endif /* SELFTEST_KVM_VGIC_H */
> diff --git a/tools/testing/selftests/kvm/lib/aarch64/vgic.c b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
> new file mode 100644
> index 000000000000..a0e4b986d335
> --- /dev/null
> +++ b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
> @@ -0,0 +1,67 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * ARM Generic Interrupt Controller (GIC) v3 host support
> + */
> +
> +#include <linux/kvm.h>
> +#include <linux/sizes.h>
> +
> +#include "kvm_util.h"
> +
> +#define VGIC_V3_GICD_SZ (SZ_64K)
> +#define VGIC_V3_GICR_SZ (2 * SZ_64K)
> +
> +#define REDIST_REGION_ATTR_ADDR(count, base, flags, index) \
> + (((uint64_t)(count) << 52) | \
> + ((uint64_t)((base) >> 16) << 16) | \
> + ((uint64_t)(flags) << 12) | \
> + index)
> +
> +static void vgic_v3_map(struct kvm_vm *vm, uint64_t addr, unsigned int size)
> +{
> + unsigned int n_pages = DIV_ROUND_UP(size, vm_get_page_size(vm));
> +
> + virt_map(vm, addr, addr, n_pages);
> +}
> +
> +/*
> + * vGIC-v3 default host setup
> + *
> + * Input args:
> + * vm - KVM VM
> + * nr_vcpus - Number of vCPUs for this VM
> + * gicd_base_gpa - Guest Physical Address of the Distributor region
> + * gicr_base_gpa - Guest Physical Address of the Redistributor region
> + *
> + * Output args: None
> + *
> + * Return: GIC file-descriptor or negative error code upon failure
> + *
> + * The function creates a vGIC-v3 device and maps the distributor and
> + * redistributor regions of the guest.
> + */
> +int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
> + uint64_t gicd_base_gpa, uint64_t gicr_base_gpa)
> +{
> + uint64_t redist_attr;
> + int gic_fd;
> +
> + TEST_ASSERT(nr_vcpus <= KVM_MAX_VCPUS,
> + "Invalid number of CPUs: %u\n", nr_vcpus);
> +
> + gic_fd = kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V3, false);
Nit: you can return early if gic_fd is bad.
> +
> + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
> + KVM_VGIC_V3_ADDR_TYPE_DIST, &gicd_base_gpa, true);
> + vgic_v3_map(vm, gicd_base_gpa, VGIC_V3_GICD_SZ);
vgic_v3_map() implies that it's doing something vgic specific, when it's
just converting bytes to pages. What about something like the following?
virt_map(vm, addr, addr, VM_BYTES_TO_PAGES(vm, VGIC_V3_GICD_SZ));
and you add a VM_BYTES_TO_PAGES macro to include/kvm_util.h? I think
this macro can be useful to others.
> +
> + redist_attr = REDIST_REGION_ATTR_ADDR(nr_vcpus, gicr_base_gpa, 0, 0);
> + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
> + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &redist_attr, true);
> + vgic_v3_map(vm, gicr_base_gpa, VGIC_V3_GICR_SZ * nr_vcpus);
> +
> + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
> + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true);
> +
> + return gic_fd;
> +}
> --
> 2.33.0.153.gba50c8fa24-goog
>
On Thu, Sep 2, 2021 at 10:28 AM Ricardo Koller <[email protected]> wrote:
>
> On Wed, Sep 01, 2021 at 09:14:10PM +0000, Raghavendra Rao Ananta wrote:
> > Implement a simple library to do perform vGIC-v3
> > setup from a host of view. This includes creating
> > a vGIC device, setting up distributor and redistributor
> > attributes, and mapping the guest physical addresses.
> >
> > Signed-off-by: Raghavendra Rao Ananta <[email protected]>
> >
> > ---
> > tools/testing/selftests/kvm/Makefile | 2 +-
> > .../selftests/kvm/include/aarch64/vgic.h | 14 ++++
> > .../testing/selftests/kvm/lib/aarch64/vgic.c | 67 +++++++++++++++++++
> > 3 files changed, 82 insertions(+), 1 deletion(-)
> > create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h
> > create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.c
> >
> > diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
> > index 5476a8ddef60..8342f65c1d96 100644
> > --- a/tools/testing/selftests/kvm/Makefile
> > +++ b/tools/testing/selftests/kvm/Makefile
> > @@ -35,7 +35,7 @@ endif
> >
> > LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c
> > LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S
> > -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c
> > +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c lib/aarch64/vgic.c
> > LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c
> >
> > TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_test
> > diff --git a/tools/testing/selftests/kvm/include/aarch64/vgic.h b/tools/testing/selftests/kvm/include/aarch64/vgic.h
> > new file mode 100644
> > index 000000000000..45bbf238147a
> > --- /dev/null
> > +++ b/tools/testing/selftests/kvm/include/aarch64/vgic.h
> > @@ -0,0 +1,14 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * ARM Generic Interrupt Controller (GIC) host specific defines
> > + */
> > +
> > +#ifndef SELFTEST_KVM_VGIC_H
> > +#define SELFTEST_KVM_VGIC_H
> > +
> > +#include <linux/kvm.h>
> > +
> > +int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
> > + uint64_t gicd_base_gpa, uint64_t gicr_base_gpa, uint32_t slot);
> > +
> > +#endif /* SELFTEST_KVM_VGIC_H */
> > diff --git a/tools/testing/selftests/kvm/lib/aarch64/vgic.c b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
> > new file mode 100644
> > index 000000000000..a0e4b986d335
> > --- /dev/null
> > +++ b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
> > @@ -0,0 +1,67 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * ARM Generic Interrupt Controller (GIC) v3 host support
> > + */
> > +
> > +#include <linux/kvm.h>
> > +#include <linux/sizes.h>
> > +
> > +#include "kvm_util.h"
> > +
> > +#define VGIC_V3_GICD_SZ (SZ_64K)
> > +#define VGIC_V3_GICR_SZ (2 * SZ_64K)
> > +
> > +#define REDIST_REGION_ATTR_ADDR(count, base, flags, index) \
> > + (((uint64_t)(count) << 52) | \
> > + ((uint64_t)((base) >> 16) << 16) | \
> > + ((uint64_t)(flags) << 12) | \
> > + index)
> > +
> > +static void vgic_v3_map(struct kvm_vm *vm, uint64_t addr, unsigned int size)
> > +{
> > + unsigned int n_pages = DIV_ROUND_UP(size, vm_get_page_size(vm));
> > +
> > + virt_map(vm, addr, addr, n_pages);
> > +}
> > +
> > +/*
> > + * vGIC-v3 default host setup
> > + *
> > + * Input args:
> > + * vm - KVM VM
> > + * nr_vcpus - Number of vCPUs for this VM
> > + * gicd_base_gpa - Guest Physical Address of the Distributor region
> > + * gicr_base_gpa - Guest Physical Address of the Redistributor region
> > + *
> > + * Output args: None
> > + *
> > + * Return: GIC file-descriptor or negative error code upon failure
> > + *
> > + * The function creates a vGIC-v3 device and maps the distributor and
> > + * redistributor regions of the guest.
> > + */
> > +int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
> > + uint64_t gicd_base_gpa, uint64_t gicr_base_gpa)
> > +{
> > + uint64_t redist_attr;
> > + int gic_fd;
> > +
> > + TEST_ASSERT(nr_vcpus <= KVM_MAX_VCPUS,
> > + "Invalid number of CPUs: %u\n", nr_vcpus);
> > +
> > + gic_fd = kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V3, false);
>
> Nit: you can return early if gic_fd is bad.
>
kvm_create_device() already takes care of this and the test would
simply fail if gic_fd was bad.
So, I think we can positively move on :)
> > +
> > + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
> > + KVM_VGIC_V3_ADDR_TYPE_DIST, &gicd_base_gpa, true);
> > + vgic_v3_map(vm, gicd_base_gpa, VGIC_V3_GICD_SZ);
>
> vgic_v3_map() implies that it's doing something vgic specific, when it's
> just converting bytes to pages. What about something like the following?
>
> virt_map(vm, addr, addr, VM_BYTES_TO_PAGES(vm, VGIC_V3_GICD_SZ));
>
> and you add a VM_BYTES_TO_PAGES macro to include/kvm_util.h? I think
> this macro can be useful to others.
>
Yeah, good idea. Will do.
Regards,
Raghavendra
> > +
> > + redist_attr = REDIST_REGION_ATTR_ADDR(nr_vcpus, gicr_base_gpa, 0, 0);
> > + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
> > + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &redist_attr, true);
> > + vgic_v3_map(vm, gicr_base_gpa, VGIC_V3_GICR_SZ * nr_vcpus);
> > +
> > + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
> > + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true);
> > +
> > + return gic_fd;
> > +}
> > --
> > 2.33.0.153.gba50c8fa24-goog
> >
On Wed, Sep 01, 2021 at 09:14:10PM +0000, Raghavendra Rao Ananta wrote:
> Implement a simple library to do perform vGIC-v3
s/do//
> setup from a host of view.
^ point
> This includes creating
> a vGIC device, setting up distributor and redistributor
> attributes, and mapping the guest physical addresses.
>
> Signed-off-by: Raghavendra Rao Ananta <[email protected]>
>
> ---
> tools/testing/selftests/kvm/Makefile | 2 +-
> .../selftests/kvm/include/aarch64/vgic.h | 14 ++++
> .../testing/selftests/kvm/lib/aarch64/vgic.c | 67 +++++++++++++++++++
> 3 files changed, 82 insertions(+), 1 deletion(-)
> create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h
> create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.c
>
> diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
> index 5476a8ddef60..8342f65c1d96 100644
> --- a/tools/testing/selftests/kvm/Makefile
> +++ b/tools/testing/selftests/kvm/Makefile
> @@ -35,7 +35,7 @@ endif
>
> LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c
> LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S
> -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c
> +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c lib/aarch64/vgic.c
> LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c
>
> TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_test
> diff --git a/tools/testing/selftests/kvm/include/aarch64/vgic.h b/tools/testing/selftests/kvm/include/aarch64/vgic.h
> new file mode 100644
> index 000000000000..45bbf238147a
> --- /dev/null
> +++ b/tools/testing/selftests/kvm/include/aarch64/vgic.h
> @@ -0,0 +1,14 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * ARM Generic Interrupt Controller (GIC) host specific defines
> + */
> +
> +#ifndef SELFTEST_KVM_VGIC_H
> +#define SELFTEST_KVM_VGIC_H
> +
> +#include <linux/kvm.h>
> +
> +int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
> + uint64_t gicd_base_gpa, uint64_t gicr_base_gpa, uint32_t slot);
> +
> +#endif /* SELFTEST_KVM_VGIC_H */
> diff --git a/tools/testing/selftests/kvm/lib/aarch64/vgic.c b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
> new file mode 100644
> index 000000000000..a0e4b986d335
> --- /dev/null
> +++ b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
> @@ -0,0 +1,67 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * ARM Generic Interrupt Controller (GIC) v3 host support
> + */
> +
> +#include <linux/kvm.h>
> +#include <linux/sizes.h>
> +
> +#include "kvm_util.h"
> +
> +#define VGIC_V3_GICD_SZ (SZ_64K)
> +#define VGIC_V3_GICR_SZ (2 * SZ_64K)
> +
> +#define REDIST_REGION_ATTR_ADDR(count, base, flags, index) \
> + (((uint64_t)(count) << 52) | \
> + ((uint64_t)((base) >> 16) << 16) | \
> + ((uint64_t)(flags) << 12) | \
> + index)
This could go in vgic.h allowing us to share it in aarch64/vgic_init.c,
where we already have the same definition.
> +
> +static void vgic_v3_map(struct kvm_vm *vm, uint64_t addr, unsigned int size)
> +{
> + unsigned int n_pages = DIV_ROUND_UP(size, vm_get_page_size(vm));
> +
> + virt_map(vm, addr, addr, n_pages);
> +}
> +
> +/*
> + * vGIC-v3 default host setup
> + *
> + * Input args:
> + * vm - KVM VM
> + * nr_vcpus - Number of vCPUs for this VM
> + * gicd_base_gpa - Guest Physical Address of the Distributor region
> + * gicr_base_gpa - Guest Physical Address of the Redistributor region
> + *
> + * Output args: None
> + *
> + * Return: GIC file-descriptor or negative error code upon failure
> + *
> + * The function creates a vGIC-v3 device and maps the distributor and
> + * redistributor regions of the guest.
> + */
> +int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
> + uint64_t gicd_base_gpa, uint64_t gicr_base_gpa)
> +{
> + uint64_t redist_attr;
> + int gic_fd;
> +
> + TEST_ASSERT(nr_vcpus <= KVM_MAX_VCPUS,
> + "Invalid number of CPUs: %u\n", nr_vcpus);
TEST_ASSERT(!list_empty(&vm->vcpus), ...) to ensure we've created vcpus
first. To be really paranoid we could even confirm the number of vcpus in
the list matches nr_vcpus.
> +
> + gic_fd = kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V3, false);
> +
> + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
> + KVM_VGIC_V3_ADDR_TYPE_DIST, &gicd_base_gpa, true);
> + vgic_v3_map(vm, gicd_base_gpa, VGIC_V3_GICD_SZ);
> +
> + redist_attr = REDIST_REGION_ATTR_ADDR(nr_vcpus, gicr_base_gpa, 0, 0);
> + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
> + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &redist_attr, true);
> + vgic_v3_map(vm, gicr_base_gpa, VGIC_V3_GICR_SZ * nr_vcpus);
> +
> + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
> + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true);
> +
> + return gic_fd;
> +}
> --
> 2.33.0.153.gba50c8fa24-goog
Otherwise
Reviewed-by: Andrew Jones <[email protected]>
Thanks,
drew
On Wed, Sep 01, 2021 at 09:14:10PM +0000, Raghavendra Rao Ananta wrote:
> Implement a simple library to do perform vGIC-v3
> setup from a host of view. This includes creating
> a vGIC device, setting up distributor and redistributor
> attributes, and mapping the guest physical addresses.
>
> Signed-off-by: Raghavendra Rao Ananta <[email protected]>
>
> ---
> tools/testing/selftests/kvm/Makefile | 2 +-
> .../selftests/kvm/include/aarch64/vgic.h | 14 ++++
> .../testing/selftests/kvm/lib/aarch64/vgic.c | 67 +++++++++++++++++++
> 3 files changed, 82 insertions(+), 1 deletion(-)
> create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h
> create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.c
>
> diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
> index 5476a8ddef60..8342f65c1d96 100644
> --- a/tools/testing/selftests/kvm/Makefile
> +++ b/tools/testing/selftests/kvm/Makefile
> @@ -35,7 +35,7 @@ endif
>
> LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c
> LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S
> -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c
> +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c lib/aarch64/vgic.c
> LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c
>
> TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_test
> diff --git a/tools/testing/selftests/kvm/include/aarch64/vgic.h b/tools/testing/selftests/kvm/include/aarch64/vgic.h
> new file mode 100644
> index 000000000000..45bbf238147a
> --- /dev/null
> +++ b/tools/testing/selftests/kvm/include/aarch64/vgic.h
> @@ -0,0 +1,14 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * ARM Generic Interrupt Controller (GIC) host specific defines
> + */
> +
> +#ifndef SELFTEST_KVM_VGIC_H
> +#define SELFTEST_KVM_VGIC_H
> +
> +#include <linux/kvm.h>
> +
> +int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
> + uint64_t gicd_base_gpa, uint64_t gicr_base_gpa, uint32_t slot);
Having seen 5 arguments used in the vgic_v3_setup call in the next patch I
came back here to refresh my memory on that parameter. 'slot' is the one I
forgot, but...
> +
> +#endif /* SELFTEST_KVM_VGIC_H */
> diff --git a/tools/testing/selftests/kvm/lib/aarch64/vgic.c b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
> new file mode 100644
> index 000000000000..a0e4b986d335
> --- /dev/null
> +++ b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
> @@ -0,0 +1,67 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * ARM Generic Interrupt Controller (GIC) v3 host support
> + */
> +
> +#include <linux/kvm.h>
> +#include <linux/sizes.h>
> +
> +#include "kvm_util.h"
> +
> +#define VGIC_V3_GICD_SZ (SZ_64K)
> +#define VGIC_V3_GICR_SZ (2 * SZ_64K)
> +
> +#define REDIST_REGION_ATTR_ADDR(count, base, flags, index) \
> + (((uint64_t)(count) << 52) | \
> + ((uint64_t)((base) >> 16) << 16) | \
> + ((uint64_t)(flags) << 12) | \
> + index)
> +
> +static void vgic_v3_map(struct kvm_vm *vm, uint64_t addr, unsigned int size)
> +{
> + unsigned int n_pages = DIV_ROUND_UP(size, vm_get_page_size(vm));
> +
> + virt_map(vm, addr, addr, n_pages);
> +}
> +
> +/*
> + * vGIC-v3 default host setup
> + *
> + * Input args:
> + * vm - KVM VM
> + * nr_vcpus - Number of vCPUs for this VM
> + * gicd_base_gpa - Guest Physical Address of the Distributor region
> + * gicr_base_gpa - Guest Physical Address of the Redistributor region
> + *
> + * Output args: None
> + *
> + * Return: GIC file-descriptor or negative error code upon failure
> + *
> + * The function creates a vGIC-v3 device and maps the distributor and
> + * redistributor regions of the guest.
> + */
> +int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
> + uint64_t gicd_base_gpa, uint64_t gicr_base_gpa)
...looks like it was forgotten here too.
Thanks,
drew
> +{
> + uint64_t redist_attr;
> + int gic_fd;
> +
> + TEST_ASSERT(nr_vcpus <= KVM_MAX_VCPUS,
> + "Invalid number of CPUs: %u\n", nr_vcpus);
> +
> + gic_fd = kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V3, false);
> +
> + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
> + KVM_VGIC_V3_ADDR_TYPE_DIST, &gicd_base_gpa, true);
> + vgic_v3_map(vm, gicd_base_gpa, VGIC_V3_GICD_SZ);
> +
> + redist_attr = REDIST_REGION_ATTR_ADDR(nr_vcpus, gicr_base_gpa, 0, 0);
> + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
> + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &redist_attr, true);
> + vgic_v3_map(vm, gicr_base_gpa, VGIC_V3_GICR_SZ * nr_vcpus);
> +
> + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
> + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true);
> +
> + return gic_fd;
> +}
> --
> 2.33.0.153.gba50c8fa24-goog
>
> _______________________________________________
> kvmarm mailing list
> [email protected]
> https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
>
On Fri, Sep 3, 2021 at 3:00 AM Andrew Jones <[email protected]> wrote:
>
> On Wed, Sep 01, 2021 at 09:14:10PM +0000, Raghavendra Rao Ananta wrote:
> > Implement a simple library to do perform vGIC-v3
>
> s/do//
>
> > setup from a host of view.
> ^ point
>
> > This includes creating
> > a vGIC device, setting up distributor and redistributor
> > attributes, and mapping the guest physical addresses.
> >
> > Signed-off-by: Raghavendra Rao Ananta <[email protected]>
> >
> > ---
> > tools/testing/selftests/kvm/Makefile | 2 +-
> > .../selftests/kvm/include/aarch64/vgic.h | 14 ++++
> > .../testing/selftests/kvm/lib/aarch64/vgic.c | 67 +++++++++++++++++++
> > 3 files changed, 82 insertions(+), 1 deletion(-)
> > create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h
> > create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.c
> >
> > diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
> > index 5476a8ddef60..8342f65c1d96 100644
> > --- a/tools/testing/selftests/kvm/Makefile
> > +++ b/tools/testing/selftests/kvm/Makefile
> > @@ -35,7 +35,7 @@ endif
> >
> > LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c
> > LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S
> > -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c
> > +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c lib/aarch64/vgic.c
> > LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c
> >
> > TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_test
> > diff --git a/tools/testing/selftests/kvm/include/aarch64/vgic.h b/tools/testing/selftests/kvm/include/aarch64/vgic.h
> > new file mode 100644
> > index 000000000000..45bbf238147a
> > --- /dev/null
> > +++ b/tools/testing/selftests/kvm/include/aarch64/vgic.h
> > @@ -0,0 +1,14 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * ARM Generic Interrupt Controller (GIC) host specific defines
> > + */
> > +
> > +#ifndef SELFTEST_KVM_VGIC_H
> > +#define SELFTEST_KVM_VGIC_H
> > +
> > +#include <linux/kvm.h>
> > +
> > +int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
> > + uint64_t gicd_base_gpa, uint64_t gicr_base_gpa, uint32_t slot);
> > +
> > +#endif /* SELFTEST_KVM_VGIC_H */
> > diff --git a/tools/testing/selftests/kvm/lib/aarch64/vgic.c b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
> > new file mode 100644
> > index 000000000000..a0e4b986d335
> > --- /dev/null
> > +++ b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
> > @@ -0,0 +1,67 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * ARM Generic Interrupt Controller (GIC) v3 host support
> > + */
> > +
> > +#include <linux/kvm.h>
> > +#include <linux/sizes.h>
> > +
> > +#include "kvm_util.h"
> > +
> > +#define VGIC_V3_GICD_SZ (SZ_64K)
> > +#define VGIC_V3_GICR_SZ (2 * SZ_64K)
> > +
> > +#define REDIST_REGION_ATTR_ADDR(count, base, flags, index) \
> > + (((uint64_t)(count) << 52) | \
> > + ((uint64_t)((base) >> 16) << 16) | \
> > + ((uint64_t)(flags) << 12) | \
> > + index)
>
> This could go in vgic.h allowing us to share it in aarch64/vgic_init.c,
> where we already have the same definition.
>
Sure, I will move this.
> > +
> > +static void vgic_v3_map(struct kvm_vm *vm, uint64_t addr, unsigned int size)
> > +{
> > + unsigned int n_pages = DIV_ROUND_UP(size, vm_get_page_size(vm));
> > +
> > + virt_map(vm, addr, addr, n_pages);
> > +}
> > +
> > +/*
> > + * vGIC-v3 default host setup
> > + *
> > + * Input args:
> > + * vm - KVM VM
> > + * nr_vcpus - Number of vCPUs for this VM
> > + * gicd_base_gpa - Guest Physical Address of the Distributor region
> > + * gicr_base_gpa - Guest Physical Address of the Redistributor region
> > + *
> > + * Output args: None
> > + *
> > + * Return: GIC file-descriptor or negative error code upon failure
> > + *
> > + * The function creates a vGIC-v3 device and maps the distributor and
> > + * redistributor regions of the guest.
> > + */
> > +int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
> > + uint64_t gicd_base_gpa, uint64_t gicr_base_gpa)
> > +{
> > + uint64_t redist_attr;
> > + int gic_fd;
> > +
> > + TEST_ASSERT(nr_vcpus <= KVM_MAX_VCPUS,
> > + "Invalid number of CPUs: %u\n", nr_vcpus);
>
> TEST_ASSERT(!list_empty(&vm->vcpus), ...) to ensure we've created vcpus
> first. To be really paranoid we could even confirm the number of vcpus in
> the list matches nr_vcpus.
>
Great idea! I'll add these checks too.
Regards
Raghavendra
> > +
> > + gic_fd = kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V3, false);
> > +
> > + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
> > + KVM_VGIC_V3_ADDR_TYPE_DIST, &gicd_base_gpa, true);
> > + vgic_v3_map(vm, gicd_base_gpa, VGIC_V3_GICD_SZ);
> > +
> > + redist_attr = REDIST_REGION_ATTR_ADDR(nr_vcpus, gicr_base_gpa, 0, 0);
> > + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
> > + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &redist_attr, true);
> > + vgic_v3_map(vm, gicr_base_gpa, VGIC_V3_GICR_SZ * nr_vcpus);
> > +
> > + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
> > + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true);
> > +
> > + return gic_fd;
> > +}
> > --
> > 2.33.0.153.gba50c8fa24-goog
>
> Otherwise
>
> Reviewed-by: Andrew Jones <[email protected]>
>
> Thanks,
> drew
>
On Fri, Sep 3, 2021 at 3:52 AM Andrew Jones <[email protected]> wrote:
>
> On Wed, Sep 01, 2021 at 09:14:10PM +0000, Raghavendra Rao Ananta wrote:
> > Implement a simple library to do perform vGIC-v3
> > setup from a host of view. This includes creating
> > a vGIC device, setting up distributor and redistributor
> > attributes, and mapping the guest physical addresses.
> >
> > Signed-off-by: Raghavendra Rao Ananta <[email protected]>
> >
> > ---
> > tools/testing/selftests/kvm/Makefile | 2 +-
> > .../selftests/kvm/include/aarch64/vgic.h | 14 ++++
> > .../testing/selftests/kvm/lib/aarch64/vgic.c | 67 +++++++++++++++++++
> > 3 files changed, 82 insertions(+), 1 deletion(-)
> > create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h
> > create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.c
> >
> > diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
> > index 5476a8ddef60..8342f65c1d96 100644
> > --- a/tools/testing/selftests/kvm/Makefile
> > +++ b/tools/testing/selftests/kvm/Makefile
> > @@ -35,7 +35,7 @@ endif
> >
> > LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c
> > LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S
> > -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c
> > +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c lib/aarch64/vgic.c
> > LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c
> >
> > TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_test
> > diff --git a/tools/testing/selftests/kvm/include/aarch64/vgic.h b/tools/testing/selftests/kvm/include/aarch64/vgic.h
> > new file mode 100644
> > index 000000000000..45bbf238147a
> > --- /dev/null
> > +++ b/tools/testing/selftests/kvm/include/aarch64/vgic.h
> > @@ -0,0 +1,14 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * ARM Generic Interrupt Controller (GIC) host specific defines
> > + */
> > +
> > +#ifndef SELFTEST_KVM_VGIC_H
> > +#define SELFTEST_KVM_VGIC_H
> > +
> > +#include <linux/kvm.h>
> > +
> > +int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
> > + uint64_t gicd_base_gpa, uint64_t gicr_base_gpa, uint32_t slot);
>
> Having seen 5 arguments used in the vgic_v3_setup call in the next patch I
> came back here to refresh my memory on that parameter. 'slot' is the one I
> forgot, but...
>
> > +
> > +#endif /* SELFTEST_KVM_VGIC_H */
> > diff --git a/tools/testing/selftests/kvm/lib/aarch64/vgic.c b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
> > new file mode 100644
> > index 000000000000..a0e4b986d335
> > --- /dev/null
> > +++ b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
> > @@ -0,0 +1,67 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * ARM Generic Interrupt Controller (GIC) v3 host support
> > + */
> > +
> > +#include <linux/kvm.h>
> > +#include <linux/sizes.h>
> > +
> > +#include "kvm_util.h"
> > +
> > +#define VGIC_V3_GICD_SZ (SZ_64K)
> > +#define VGIC_V3_GICR_SZ (2 * SZ_64K)
> > +
> > +#define REDIST_REGION_ATTR_ADDR(count, base, flags, index) \
> > + (((uint64_t)(count) << 52) | \
> > + ((uint64_t)((base) >> 16) << 16) | \
> > + ((uint64_t)(flags) << 12) | \
> > + index)
> > +
> > +static void vgic_v3_map(struct kvm_vm *vm, uint64_t addr, unsigned int size)
> > +{
> > + unsigned int n_pages = DIV_ROUND_UP(size, vm_get_page_size(vm));
> > +
> > + virt_map(vm, addr, addr, n_pages);
> > +}
> > +
> > +/*
> > + * vGIC-v3 default host setup
> > + *
> > + * Input args:
> > + * vm - KVM VM
> > + * nr_vcpus - Number of vCPUs for this VM
> > + * gicd_base_gpa - Guest Physical Address of the Distributor region
> > + * gicr_base_gpa - Guest Physical Address of the Redistributor region
> > + *
> > + * Output args: None
> > + *
> > + * Return: GIC file-descriptor or negative error code upon failure
> > + *
> > + * The function creates a vGIC-v3 device and maps the distributor and
> > + * redistributor regions of the guest.
> > + */
> > +int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus,
> > + uint64_t gicd_base_gpa, uint64_t gicr_base_gpa)
>
> ...looks like it was forgotten here too.
>
You are right. I had 'slot' to try other mechanisms, but I guess I
forgot to clean it up.
Thanks for catching this.
Regards,
Raghavendra
> Thanks,
> drew
>
> > +{
> > + uint64_t redist_attr;
> > + int gic_fd;
> > +
> > + TEST_ASSERT(nr_vcpus <= KVM_MAX_VCPUS,
> > + "Invalid number of CPUs: %u\n", nr_vcpus);
> > +
> > + gic_fd = kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V3, false);
> > +
> > + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
> > + KVM_VGIC_V3_ADDR_TYPE_DIST, &gicd_base_gpa, true);
> > + vgic_v3_map(vm, gicd_base_gpa, VGIC_V3_GICD_SZ);
> > +
> > + redist_attr = REDIST_REGION_ATTR_ADDR(nr_vcpus, gicr_base_gpa, 0, 0);
> > + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
> > + KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION, &redist_attr, true);
> > + vgic_v3_map(vm, gicr_base_gpa, VGIC_V3_GICR_SZ * nr_vcpus);
> > +
> > + kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,
> > + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true);
> > +
> > + return gic_fd;
> > +}
> > --
> > 2.33.0.153.gba50c8fa24-goog
> >
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> >
>