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From 5db954cb188d3775aec053fad8a39bf4c26a2b92 Mon Sep 17 00:00:00 2001
From: liupingwei <liupingwei0317@outlook.com>
Date: Fri, 2 Aug 2024 11:55:43 +0800
Subject: [PATCH] Add support for the virtcca cvm feature.
With this commit,we can append new startup parameters :"cma=64M
cvm_guest=1" and "kvm_type=cvm" to use virtcca cvm feature.
Here is a full example of the append parameters for a cvm :
-M virt,gic-version=3,accel=kvm,kernel_irqchip=on,kvm_type=cvm \
-append "swiotlb=force console=tty0 console=ttyAMA0 kaslr.disabled=1
cma=64M cvm_guest=1 rodata=off rootfstype=ext4 root=/dev/vad rw" \
Additionally,the SVE and PMU are optional configurations for cvm,here is
an example:
-object tmm-guest,id=tmm0,sve-vector-length=128,num-pmu-counters=1
Signed-off-by: liupingwei <liupingwei0317@outlook.com>
---
accel/kvm/kvm-all.c | 36 ++++
hw/arm/boot.c | 49 +++++
hw/arm/virt.c | 61 +++++-
hw/virtio/virtio-bus.c | 6 +
include/hw/arm/boot.h | 1 +
include/hw/arm/virt.h | 1 +
include/sysemu/kvm.h | 9 +
linux-headers/asm-arm64/kvm.h | 62 ++++++
linux-headers/linux/kvm.h | 32 +++-
qapi/qom.json | 29 ++-
target/arm/kvm-tmm.c | 344 ++++++++++++++++++++++++++++++++++
target/arm/kvm.c | 6 +-
target/arm/kvm64.c | 5 +
target/arm/kvm_arm.h | 16 ++
target/arm/meson.build | 1 +
15 files changed, 651 insertions(+), 7 deletions(-)
create mode 100644 target/arm/kvm-tmm.c
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index ade7841ca3..dc3605e648 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -52,6 +52,8 @@
#include "hw/boards.h"
#include "sysemu/stats.h"
+#include "sysemu/kvm.h"
+
/* This check must be after config-host.h is included */
#ifdef CONFIG_EVENTFD
#include <sys/eventfd.h>
@@ -86,6 +88,9 @@ struct KVMParkedVcpu {
};
KVMState *kvm_state;
+
+bool virtcca_cvm_allowed = false;
+
bool kvm_kernel_irqchip;
bool kvm_split_irqchip;
bool kvm_async_interrupts_allowed;
@@ -2355,6 +2360,11 @@ uint32_t kvm_dirty_ring_size(void)
return kvm_state->kvm_dirty_ring_size;
}
+static inline bool kvm_is_virtcca_cvm_type(int type)
+{
+ return type & VIRTCCA_CVM_TYPE;
+}
+
static int kvm_init(MachineState *ms)
{
MachineClass *mc = MACHINE_GET_CLASS(ms);
@@ -2447,6 +2457,10 @@ static int kvm_init(MachineState *ms)
goto err;
}
+ if (kvm_is_virtcca_cvm_type(type)) {
+ virtcca_cvm_allowed = true;
+ }
+
do {
ret = kvm_ioctl(s, KVM_CREATE_VM, type);
} while (ret == -EINTR);
@@ -3503,6 +3517,28 @@ int kvm_get_one_reg(CPUState *cs, uint64_t id, void *target)
return r;
}
+int kvm_load_user_data(hwaddr loader_start, hwaddr image_end, hwaddr initrd_start, hwaddr dtb_end, hwaddr ram_size,
+ struct kvm_numa_info *numa_info)
+{
+ KVMState *state = kvm_state;
+ struct kvm_user_data data;
+ int ret;
+
+ data.loader_start = loader_start;
+ data.image_end = image_end;
+ data.initrd_start = initrd_start;
+ data.dtb_end = dtb_end;
+ data.ram_size = ram_size;
+ memcpy(&data.numa_info, numa_info, sizeof(struct kvm_numa_info));
+
+ ret = kvm_vm_ioctl(state, KVM_LOAD_USER_DATA, &data);
+ if (ret < 0) {
+ error_report("%s: KVM_LOAD_USER_DATA failed!\n", __func__);
+ }
+
+ return ret;
+}
+
static bool kvm_accel_has_memory(MachineState *ms, AddressSpace *as,
hwaddr start_addr, hwaddr size)
{
diff --git a/hw/arm/boot.c b/hw/arm/boot.c
index 345c7cfa19..42110b0f18 100644
--- a/hw/arm/boot.c
+++ b/hw/arm/boot.c
@@ -27,6 +27,7 @@
#include "qemu/config-file.h"
#include "qemu/option.h"
#include "qemu/units.h"
+#include "kvm_arm.h"
/* Kernel boot protocol is specified in the kernel docs
* Documentation/arm/Booting and Documentation/arm64/booting.txt
@@ -1142,6 +1143,16 @@ static void arm_setup_direct_kernel_boot(ARMCPU *cpu,
for (cs = first_cpu; cs; cs = CPU_NEXT(cs)) {
ARM_CPU(cs)->env.boot_info = info;
}
+
+ if (kvm_enabled() && virtcca_cvm_enabled()) {
+ if (info->dtb_limit == 0) {
+ info->dtb_limit = info->dtb_start + 0x200000;
+ }
+ kvm_load_user_data(info->loader_start, image_high_addr, info->initrd_start,
+ info->dtb_limit, info->ram_size, (struct kvm_numa_info *)info->numa_info);
+ tmm_add_ram_region(info->loader_start, image_high_addr - info->loader_start,
+ info->initrd_start, info->dtb_limit - info->initrd_start, true);
+ }
}
static void arm_setup_firmware_boot(ARMCPU *cpu, struct arm_boot_info *info)
@@ -1235,6 +1246,39 @@ void arm_load_kernel(ARMCPU *cpu, MachineState *ms, struct arm_boot_info *info)
info->initrd_filename = ms->initrd_filename;
info->dtb_filename = ms->dtb;
info->dtb_limit = 0;
+ if (kvm_enabled() && virtcca_cvm_enabled()) {
+ info->ram_size = ms->ram_size;
+ info->numa_info = g_malloc(sizeof(struct kvm_numa_info));
+ struct kvm_numa_info *numa_info = (struct kvm_numa_info *) info->numa_info;
+ if (ms->numa_state != NULL && ms->numa_state->num_nodes > 0) {
+ numa_info->numa_cnt = ms->numa_state->num_nodes;
+ uint64_t mem_base = info->loader_start;
+ for (int64_t i = 0; i < ms->numa_state->num_nodes && i < MAX_NUMA_NODE; i++) {
+ uint64_t mem_len = ms->numa_state->nodes[i].node_mem;
+ numa_info->numa_nodes[i].numa_id = i;
+ numa_info->numa_nodes[i].ipa_start = mem_base;
+ numa_info->numa_nodes[i].ipa_size = mem_len;
+ memcpy(numa_info->numa_nodes[i].host_numa_nodes, ms->numa_state->nodes[i].node_memdev->host_nodes,
+ MAX_NODES / BITS_PER_LONG * sizeof(uint64_t));
+ mem_base += mem_len;
+ }
+ } else {
+ numa_info->numa_cnt = 1;
+ numa_info->numa_nodes[0].numa_id = 0;
+ numa_info->numa_nodes[0].ipa_start = info->loader_start;
+ numa_info->numa_nodes[0].ipa_size = info->ram_size;
+ memset(numa_info->numa_nodes[0].host_numa_nodes, 0, MAX_NODES / BITS_PER_LONG * sizeof(uint64_t));
+ }
+
+ for (int cpu_idx = ms->smp.cpus - 1; cpu_idx >= 0; cpu_idx--) {
+ ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(cpu_idx));
+ CPUState *local_cs = CPU(armcpu);
+ uint64_t node_id = 0;
+ if (ms->possible_cpus->cpus[local_cs->cpu_index].props.has_node_id)
+ node_id = ms->possible_cpus->cpus[local_cs->cpu_index].props.node_id;
+ bitmap_set((unsigned long *)numa_info->numa_nodes[node_id].cpu_id, cpu_idx, 1);
+ }
+ }
/* Load the kernel. */
if (!info->kernel_filename || info->firmware_loaded) {
@@ -1243,6 +1287,11 @@ void arm_load_kernel(ARMCPU *cpu, MachineState *ms, struct arm_boot_info *info)
arm_setup_direct_kernel_boot(cpu, info);
}
+ if (kvm_enabled() && virtcca_cvm_enabled()) {
+ g_free(info->numa_info);
+ info->numa_info = NULL;
+ }
+
/*
* Disable the PSCI conduit if it is set up to target the same
* or a lower EL than the one we're going to start the guest code in.
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index a6e324c6f8..e73a795d3d 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -285,8 +285,16 @@ static void create_fdt(VirtMachineState *vms)
/* /chosen must exist for load_dtb to fill in necessary properties later */
qemu_fdt_add_subnode(fdt, "/chosen");
+
+ g_autofree char *kvm_type = NULL;
+ if (object_property_find(OBJECT(current_machine), "kvm-type")) {
+ kvm_type = object_property_get_str(OBJECT(current_machine),
+ "kvm-type", &error_abort);
+ }
if (vms->dtb_randomness) {
- create_randomness(ms, "/chosen");
+ if (!(kvm_type && !strcmp(kvm_type, "cvm"))) {
+ create_randomness(ms, "/chosen");
+ }
}
if (vms->secure) {
@@ -1953,6 +1961,19 @@ static void virt_set_memmap(VirtMachineState *vms, int pa_bits)
vms->memmap[i] = base_memmap[i];
}
+ /* fix VIRT_MEM range */
+ if (object_property_find(OBJECT(current_machine), "kvm-type")) {
+ g_autofree char *kvm_type = object_property_get_str(OBJECT(current_machine),
+ "kvm-type", &error_abort);
+
+ if (!strcmp(kvm_type, "cvm")) {
+ vms->memmap[VIRT_MEM].base = 3 * GiB;
+ vms->memmap[VIRT_MEM].size = ms->ram_size;
+ info_report("[qemu] fix VIRT_MEM range 0x%llx - 0x%llx\n", (unsigned long long)(vms->memmap[VIRT_MEM].base),
+ (unsigned long long)(vms->memmap[VIRT_MEM].base + ms->ram_size));
+ }
+ }
+
if (ms->ram_slots > ACPI_MAX_RAM_SLOTS) {
error_report("unsupported number of memory slots: %"PRIu64,
ms->ram_slots);
@@ -2440,7 +2461,7 @@ static void machvirt_init(MachineState *machine)
*/
if (vms->secure && firmware_loaded) {
vms->psci_conduit = QEMU_PSCI_CONDUIT_DISABLED;
- } else if (vms->virt) {
+ } else if (vms->virt || virtcca_cvm_enabled()) {
vms->psci_conduit = QEMU_PSCI_CONDUIT_SMC;
} else {
vms->psci_conduit = QEMU_PSCI_CONDUIT_HVC;
@@ -2509,6 +2530,13 @@ static void machvirt_init(MachineState *machine)
}
}
+ if (virtcca_cvm_enabled()) {
+ int ret = kvm_arm_tmm_init(machine->cgs, &error_fatal);
+ if (ret != 0) {
+ error_report("fail to initialize TMM");
+ exit(1);
+ }
+ }
create_fdt(vms);
qemu_log("cpu init start\n");
@@ -3592,6 +3620,15 @@ static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine,
static int virt_kvm_type(MachineState *ms, const char *type_str)
{
VirtMachineState *vms = VIRT_MACHINE(ms);
+ int virtcca_cvm_type = 0;
+ if (object_property_find(OBJECT(current_machine), "kvm-type")) {
+ g_autofree char *kvm_type = object_property_get_str(OBJECT(current_machine),
+ "kvm-type", &error_abort);
+
+ if (!strcmp(kvm_type, "cvm")) {
+ virtcca_cvm_type = VIRTCCA_CVM_TYPE;
+ }
+ }
int max_vm_pa_size, requested_pa_size;
bool fixed_ipa;
@@ -3621,7 +3658,9 @@ static int virt_kvm_type(MachineState *ms, const char *type_str)
* the implicit legacy 40b IPA setting, in which case the kvm_type
* must be 0.
*/
- return fixed_ipa ? 0 : requested_pa_size;
+ return strcmp(type_str, "cvm") == 0 ?
+ ((fixed_ipa ? 0 : requested_pa_size) | virtcca_cvm_type) :
+ (fixed_ipa ? 0 : requested_pa_size);
}
static void virt_machine_class_init(ObjectClass *oc, void *data)
@@ -3793,6 +3832,19 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
}
+static char *virt_get_kvm_type(Object *obj, Error **errp G_GNUC_UNUSED)
+{
+ VirtMachineState *vms = VIRT_MACHINE(obj);
+ return g_strdup(vms->kvm_type);
+}
+
+static void virt_set_kvm_type(Object *obj, const char *value, Error **errp G_GNUC_UNUSED)
+{
+ VirtMachineState *vms = VIRT_MACHINE(obj);
+ g_free(vms->kvm_type);
+ vms->kvm_type = g_strdup(value);
+}
+
static void virt_instance_init(Object *obj)
{
VirtMachineState *vms = VIRT_MACHINE(obj);
@@ -3853,6 +3905,9 @@ static void virt_instance_init(Object *obj)
vms->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6);
vms->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8);
+
+ object_property_add_str(obj, "kvm-type", virt_get_kvm_type, virt_set_kvm_type);
+ object_property_set_description(obj, "kvm-type", "CVM or Normal VM");
}
static const TypeInfo virt_machine_info = {
diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c
index 896feb37a1..7e750d073d 100644
--- a/hw/virtio/virtio-bus.c
+++ b/hw/virtio/virtio-bus.c
@@ -25,6 +25,7 @@
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
+#include "sysemu/kvm.h"
#include "qapi/error.h"
#include "hw/virtio/virtio-bus.h"
#include "hw/virtio/virtio.h"
@@ -81,6 +82,11 @@ void virtio_bus_device_plugged(VirtIODevice *vdev, Error **errp)
vdev->dma_as = &address_space_memory;
if (has_iommu) {
vdev_has_iommu = virtio_host_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM);
+
+ if (virtcca_cvm_enabled() && (strcmp(vdev->name, "vhost-user-fs") == 0)) {
+ vdev_has_iommu = true;
+ }
+
/*
* Present IOMMU_PLATFORM to the driver iff iommu_plattform=on and
* device operational. If the driver does not accept IOMMU_PLATFORM
diff --git a/include/hw/arm/boot.h b/include/hw/arm/boot.h
index f81326a1dc..4491b1f85b 100644
--- a/include/hw/arm/boot.h
+++ b/include/hw/arm/boot.h
@@ -39,6 +39,7 @@ void armv7m_load_kernel(ARMCPU *cpu, const char *kernel_filename,
/* arm_boot.c */
struct arm_boot_info {
uint64_t ram_size;
+ void *numa_info;
const char *kernel_filename;
const char *kernel_cmdline;
const char *initrd_filename;
diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
index 7a734f07f7..27f5333772 100644
--- a/include/hw/arm/virt.h
+++ b/include/hw/arm/virt.h
@@ -182,6 +182,7 @@ struct VirtMachineState {
PCIBus *bus;
char *oem_id;
char *oem_table_id;
+ char *kvm_type;
NotifierList cpuhp_notifiers;
};
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index cfa77cc15b..31af5f0e24 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -19,6 +19,7 @@
#include "exec/memattrs.h"
#include "qemu/accel.h"
#include "qom/object.h"
+#include "linux-headers/linux/kvm.h"
#ifdef NEED_CPU_H
# ifdef CONFIG_KVM
@@ -32,6 +33,7 @@
#ifdef CONFIG_KVM_IS_POSSIBLE
extern bool kvm_allowed;
+extern bool virtcca_cvm_allowed;
extern bool kvm_kernel_irqchip;
extern bool kvm_split_irqchip;
extern bool kvm_async_interrupts_allowed;
@@ -44,6 +46,8 @@ extern bool kvm_readonly_mem_allowed;
extern bool kvm_msi_use_devid;
#define kvm_enabled() (kvm_allowed)
+#define virtcca_cvm_enabled() (virtcca_cvm_allowed)
+#define VIRTCCA_CVM_TYPE (1UL << 8)
/**
* kvm_irqchip_in_kernel:
*
@@ -146,6 +150,8 @@ extern bool kvm_msi_use_devid;
#else
#define kvm_enabled() (0)
+#define virtcca_cvm_enabled() (0)
+#define VIRTCCA_CVM_TYPE (0)
#define kvm_irqchip_in_kernel() (false)
#define kvm_irqchip_is_split() (false)
#define kvm_async_interrupts_enabled() (false)
@@ -543,6 +549,9 @@ bool kvm_dirty_ring_enabled(void);
uint32_t kvm_dirty_ring_size(void);
+int kvm_load_user_data(hwaddr loader_start, hwaddr image_end, hwaddr initrd_start, hwaddr dtb_end, hwaddr ram_size,
+ struct kvm_numa_info *numa_info);
+
#ifdef __aarch64__
int kvm_create_shadow_device(PCIDevice *dev);
int kvm_delete_shadow_device(PCIDevice *dev);
diff --git a/linux-headers/asm-arm64/kvm.h b/linux-headers/asm-arm64/kvm.h
index c59ea55cd8..2b040b5d60 100644
--- a/linux-headers/asm-arm64/kvm.h
+++ b/linux-headers/asm-arm64/kvm.h
@@ -110,6 +110,7 @@ struct kvm_regs {
#define KVM_ARM_VCPU_PTRAUTH_ADDRESS 5 /* VCPU uses address authentication */
#define KVM_ARM_VCPU_PTRAUTH_GENERIC 6 /* VCPU uses generic authentication */
#define KVM_ARM_VCPU_HAS_EL2 7 /* Support nested virtualization */
+#define KVM_ARM_VCPU_TEC 8 /* VCPU TEC state as part of cvm */
struct kvm_vcpu_init {
__u32 target;
@@ -523,6 +524,67 @@ struct reg_mask_range {
__u32 reserved[13];
};
+/* KVM_CAP_ARM_TMM on VM fd */
+#define KVM_CAP_ARM_TMM_CONFIG_CVM 0
+#define KVM_CAP_ARM_TMM_CREATE_RD 1
+#define KVM_CAP_ARM_TMM_POPULATE_CVM 2
+#define KVM_CAP_ARM_TMM_ACTIVATE_CVM 3
+
+#define KVM_CAP_ARM_TMM_MEASUREMENT_ALGO_SHA256 0
+#define KVM_CAP_ARM_TMM_MEASUREMENT_ALGO_SHA512 1
+
+#define KVM_CAP_ARM_TMM_RPV_SIZE 64
+
+/* List of configuration items accepted for KVM_CAP_ARM_RME_CONFIG_REALM */
+#define KVM_CAP_ARM_TMM_CFG_RPV 0
+#define KVM_CAP_ARM_TMM_CFG_HASH_ALGO 1
+#define KVM_CAP_ARM_TMM_CFG_SVE 2
+#define KVM_CAP_ARM_TMM_CFG_DBG 3
+#define KVM_CAP_ARM_TMM_CFG_PMU 4
+
+struct kvm_cap_arm_tmm_config_item {
+ __u32 cfg;
+ union {
+ /* cfg == KVM_CAP_ARM_TMM_CFG_RPV */
+ struct {
+ __u8 rpv[KVM_CAP_ARM_TMM_RPV_SIZE];
+ };
+
+ /* cfg == KVM_CAP_ARM_TMM_CFG_HASH_ALGO */
+ struct {
+ __u32 hash_algo;
+ };
+
+ /* cfg == KVM_CAP_ARM_TMM_CFG_SVE */
+ struct {
+ __u32 sve_vq;
+ };
+
+ /* cfg == KVM_CAP_ARM_TMM_CFG_DBG */
+ struct {
+ __u32 num_brps;
+ __u32 num_wrps;
+ };
+
+ /* cfg == KVM_CAP_ARM_TMM_CFG_PMU */
+ struct {
+ __u32 num_pmu_cntrs;
+ };
+ /* Fix the size of the union */
+ __u8 reserved[256];
+ };
+};
+
+#define KVM_ARM_TMM_POPULATE_FLAGS_MEASURE (1U << 0)
+struct kvm_cap_arm_tmm_populate_region_args {
+ __u64 populate_ipa_base1;
+ __u64 populate_ipa_size1;
+ __u64 populate_ipa_base2;
+ __u64 populate_ipa_size2;
+ __u32 flags;
+ __u32 reserved[3];
+};
+
#endif
#endif /* __ARM_KVM_H__ */
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index 56f6b2583f..8d12435e41 100644
--- a/linux-headers/linux/kvm.h
+++ b/linux-headers/linux/kvm.h
@@ -14,6 +14,8 @@
#include <linux/ioctl.h>
#include <asm/kvm.h>
+#include "sysemu/numa.h"
+
#define KVM_API_VERSION 12
/* *** Deprecated interfaces *** */
@@ -1198,6 +1200,8 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_ARM_SUPPORTED_BLOCK_SIZES 229
#define KVM_CAP_ARM_SUPPORTED_REG_MASK_RANGES 230
+#define KVM_CAP_ARM_TMM 300
+
#define KVM_CAP_ARM_VIRT_MSI_BYPASS 799
#ifdef KVM_CAP_IRQ_ROUTING
@@ -1469,6 +1473,32 @@ struct kvm_vfio_spapr_tce {
__s32 tablefd;
};
+#define MAX_NUMA_NODE 8
+#define MAX_CPU_BIT_MAP 4
+#define MAX_NODE_BIT_MAP (MAX_NODES / BITS_PER_LONG)
+
+struct kvm_numa_node {
+ __u64 numa_id;
+ __u64 ipa_start;
+ __u64 ipa_size;
+ __u64 host_numa_nodes[MAX_NODE_BIT_MAP];
+ __u64 cpu_id[MAX_CPU_BIT_MAP];
+};
+
+struct kvm_numa_info {
+ __u64 numa_cnt;
+ struct kvm_numa_node numa_nodes[MAX_NUMA_NODE];
+};
+
+struct kvm_user_data {
+ __u64 loader_start;
+ __u64 image_end;
+ __u64 initrd_start;
+ __u64 dtb_end;
+ __u64 ram_size;
+ struct kvm_numa_info numa_info;
+};
+
/*
* KVM_CREATE_VCPU receives as a parameter the vcpu slot, and returns
* a vcpu fd.
@@ -1481,7 +1511,7 @@ struct kvm_vfio_spapr_tce {
struct kvm_userspace_memory_region)
#define KVM_SET_TSS_ADDR _IO(KVMIO, 0x47)
#define KVM_SET_IDENTITY_MAP_ADDR _IOW(KVMIO, 0x48, __u64)
-
+#define KVM_LOAD_USER_DATA _IOW(KVMIO, 0x49, struct kvm_user_data)
/* enable ucontrol for s390 */
struct kvm_s390_ucas_mapping {
__u64 user_addr;
diff --git a/qapi/qom.json b/qapi/qom.json
index c53ef978ff..213edd8db2 100644
--- a/qapi/qom.json
+++ b/qapi/qom.json
@@ -899,6 +899,29 @@
'data': { '*cpu-affinity': ['uint16'],
'*node-affinity': ['uint16'] } }
+##
+# @TmmGuestMeasurementAlgo:
+#
+# Algorithm to use for cvm measurements
+#
+# Since: FIXME
+##
+{ 'enum': 'TmmGuestMeasurementAlgo',
+'data': ['default', 'sha256', 'sha512'] }
+
+##
+# @TmmGuestProperties:
+#
+# Properties for tmm-guest objects.
+#
+# @sve-vector-length: SVE vector length (default: 0, SVE disabled)
+#
+# Since: FIXME
+##
+{ 'struct': 'TmmGuestProperties',
+ 'data': { '*sve-vector-length': 'uint32',
+ '*num-pmu-counters': 'uint32',
+ '*measurement-algo': 'TmmGuestMeasurementAlgo' } }
##
# @ObjectType:
@@ -962,7 +985,8 @@
'tls-creds-x509',
'tls-cipher-suites',
{ 'name': 'x-remote-object', 'features': [ 'unstable' ] },
- { 'name': 'x-vfio-user-server', 'features': [ 'unstable' ] }
+ { 'name': 'x-vfio-user-server', 'features': [ 'unstable' ] },
+ 'tmm-guest'
] }
##
@@ -1029,7 +1053,8 @@
'tls-creds-x509': 'TlsCredsX509Properties',
'tls-cipher-suites': 'TlsCredsProperties',
'x-remote-object': 'RemoteObjectProperties',
- 'x-vfio-user-server': 'VfioUserServerProperties'
+ 'x-vfio-user-server': 'VfioUserServerProperties',
+ 'tmm-guest': 'TmmGuestProperties'
} }
##
diff --git a/target/arm/kvm-tmm.c b/target/arm/kvm-tmm.c
new file mode 100644
index 0000000000..efe2ca0006
--- /dev/null
+++ b/target/arm/kvm-tmm.c
@@ -0,0 +1,344 @@
+/*
+ * QEMU add virtcca cvm feature.
+ *
+ * Copyright (c) Huawei Technologies Co., Ltd. 2023-2024. All rights reserved.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "exec/confidential-guest-support.h"
+#include "hw/boards.h"
+#include "hw/core/cpu.h"
+#include "kvm_arm.h"
+#include "migration/blocker.h"
+#include "qapi/error.h"
+#include "qom/object_interfaces.h"
+#include "sysemu/kvm.h"
+#include "sysemu/runstate.h"
+#include "hw/loader.h"
+
+#define TYPE_TMM_GUEST "tmm-guest"
+OBJECT_DECLARE_SIMPLE_TYPE(TmmGuest, TMM_GUEST)
+
+#define TMM_PAGE_SIZE qemu_real_host_page_size()
+#define TMM_MAX_PMU_CTRS 0x20
+#define TMM_MAX_CFG 5
+
+struct TmmGuest {
+ ConfidentialGuestSupport parent_obj;
+ GSList *ram_regions;
+ TmmGuestMeasurementAlgo measurement_algo;
+ uint32_t sve_vl;
+ uint32_t num_pmu_cntrs;
+};
+
+typedef struct {
+ hwaddr base1;
+ hwaddr len1;
+ hwaddr base2;
+ hwaddr len2;
+ bool populate;
+} TmmRamRegion;
+
+static TmmGuest *tmm_guest;
+
+bool kvm_arm_tmm_enabled(void)
+{
+ return !!tmm_guest;
+}
+
+static int tmm_configure_one(TmmGuest *guest, uint32_t cfg, Error **errp)
+{
+ int ret = 1;
+ const char *cfg_str;
+ struct kvm_cap_arm_tmm_config_item args = {
+ .cfg = cfg,
+ };
+
+ switch (cfg) {
+ case KVM_CAP_ARM_TMM_CFG_RPV:
+ return 0;
+ case KVM_CAP_ARM_TMM_CFG_HASH_ALGO:
+ switch (guest->measurement_algo) {
+ case TMM_GUEST_MEASUREMENT_ALGO_DEFAULT:
+ return 0;
+ case TMM_GUEST_MEASUREMENT_ALGO_SHA256:
+ args.hash_algo = KVM_CAP_ARM_TMM_MEASUREMENT_ALGO_SHA256;
+ break;
+ case TMM_GUEST_MEASUREMENT_ALGO_SHA512:
+ args.hash_algo = KVM_CAP_ARM_TMM_MEASUREMENT_ALGO_SHA512;
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ cfg_str = "hash algorithm";
+ break;
+ case KVM_CAP_ARM_TMM_CFG_SVE:
+ if (!guest->sve_vl) {
+ return 0;
+ }
+ args.sve_vq = guest->sve_vl / 128;
+ cfg_str = "SVE";
+ break;
+ case KVM_CAP_ARM_TMM_CFG_DBG:
+ return 0;
+ case KVM_CAP_ARM_TMM_CFG_PMU:
+ if (!guest->num_pmu_cntrs) {
+ return 0;
+ }
+ args.num_pmu_cntrs = guest->num_pmu_cntrs;
+ cfg_str = "PMU";
+ break;
+ default:
+ g_assert_not_reached();
+ }
+
+ ret = kvm_vm_enable_cap(kvm_state, KVM_CAP_ARM_TMM, 0,
+ KVM_CAP_ARM_TMM_CONFIG_CVM, (intptr_t)&args);
+ if (ret) {
+ error_setg_errno(errp, -ret, "TMM: failed to configure %s", cfg_str);
+ }
+
+ return ret;
+}
+
+static gint tmm_compare_ram_regions(gconstpointer a, gconstpointer b)
+{
+ const TmmRamRegion *ra = a;
+ const TmmRamRegion *rb = b;
+
+ g_assert(ra->base1 != rb->base1);
+ return ra->base1 < rb->base1 ? -1 : 1;
+}
+
+void tmm_add_ram_region(hwaddr base1, hwaddr len1, hwaddr base2, hwaddr len2, bool populate)
+{
+ TmmRamRegion *region;
+
+ region = g_new0(TmmRamRegion, 1);
+ region->base1 = QEMU_ALIGN_DOWN(base1, TMM_PAGE_SIZE);
+ region->len1 = QEMU_ALIGN_UP(len1, TMM_PAGE_SIZE);
+ region->base2 = QEMU_ALIGN_DOWN(base2, TMM_PAGE_SIZE);
+ region->len2 = QEMU_ALIGN_UP(len2, TMM_PAGE_SIZE);
+ region->populate = populate;
+
+ tmm_guest->ram_regions = g_slist_insert_sorted(tmm_guest->ram_regions,
+ region, tmm_compare_ram_regions);
+}
+
+static void tmm_populate_region(gpointer data, gpointer unused)
+{
+ int ret;
+ const TmmRamRegion *region = data;
+ struct kvm_cap_arm_tmm_populate_region_args populate_args = {
+ .populate_ipa_base1 = region->base1,
+ .populate_ipa_size1 = region->len1,
+ .populate_ipa_base2 = region->base2,
+ .populate_ipa_size2 = region->len2,
+ .flags = KVM_ARM_TMM_POPULATE_FLAGS_MEASURE,
+ };
+
+ if (!region->populate) {
+ return;
+ }
+
+ ret = kvm_vm_enable_cap(kvm_state, KVM_CAP_ARM_TMM, 0,
+ KVM_CAP_ARM_TMM_POPULATE_CVM,
+ (intptr_t)&populate_args);
+ if (ret) {
+ error_report("TMM: failed to populate cvm region (0x%"HWADDR_PRIx", 0x%"HWADDR_PRIx", 0x%"HWADDR_PRIx", 0x%"HWADDR_PRIx"): %s",
+ region->base1, region->len1, region->base2, region->len2, strerror(-ret));
+ exit(1);
+ }
+}
+
+static int tmm_create_rd(Error **errp)
+{
+ int ret = kvm_vm_enable_cap(kvm_state, KVM_CAP_ARM_TMM, 0,
+ KVM_CAP_ARM_TMM_CREATE_RD);
+ if (ret) {
+ error_setg_errno(errp, -ret, "TMM: failed to create tmm Descriptor");
+ }
+ return ret;
+}
+
+static void tmm_vm_state_change(void *opaque, bool running, RunState state)
+{
+ int ret;
+ CPUState *cs;
+
+ if (!running) {
+ return;
+ }
+
+ g_slist_foreach(tmm_guest->ram_regions, tmm_populate_region, NULL);
+ g_slist_free_full(g_steal_pointer(&tmm_guest->ram_regions), g_free);
+
+ CPU_FOREACH(cs) {
+ ret = kvm_arm_vcpu_finalize(cs, KVM_ARM_VCPU_TEC);
+ if (ret) {
+ error_report("TMM: failed to finalize vCPU: %s", strerror(-ret));
+ exit(1);
+ }
+ }
+
+ ret = kvm_vm_enable_cap(kvm_state, KVM_CAP_ARM_TMM, 0,
+ KVM_CAP_ARM_TMM_ACTIVATE_CVM);
+ if (ret) {
+ error_report("TMM: failed to activate cvm: %s", strerror(-ret));
+ exit(1);
+ }
+}
+
+int kvm_arm_tmm_init(ConfidentialGuestSupport *cgs, Error **errp)
+{
+ int ret;
+ int cfg;
+
+ if (!tmm_guest) {
+ return -ENODEV;
+ }
+
+ if (!kvm_check_extension(kvm_state, KVM_CAP_ARM_TMM)) {
+ error_setg(errp, "KVM does not support TMM");
+ return -ENODEV;
+ }
+
+ for (cfg = 0; cfg < TMM_MAX_CFG; cfg++) {
+ ret = tmm_configure_one(tmm_guest, cfg, &error_abort);
+ if (ret) {
+ return ret;
+ }
+ }
+
+ ret = tmm_create_rd(&error_abort);
+ if (ret) {
+ return ret;
+ }
+
+ qemu_add_vm_change_state_handler(tmm_vm_state_change, NULL);
+ return 0;
+}
+
+static void tmm_get_sve_vl(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ TmmGuest *guest = TMM_GUEST(obj);
+
+ visit_type_uint32(v, name, &guest->sve_vl, errp);
+}
+
+static void tmm_set_sve_vl(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ TmmGuest *guest = TMM_GUEST(obj);
+ uint32_t value;
+
+ if (!visit_type_uint32(v, name, &value, errp)) {
+ return;
+ }
+
+ if (value & 0x7f || value >= ARM_MAX_VQ * 128) {
+ error_setg(errp, "invalid SVE vector length");
+ return;
+ }
+
+ guest->sve_vl = value;
+}
+
+static void tmm_get_num_pmu_cntrs(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ TmmGuest *guest = TMM_GUEST(obj);
+
+ visit_type_uint32(v, name, &guest->num_pmu_cntrs, errp);
+}
+
+static void tmm_set_num_pmu_cntrs(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ TmmGuest *guest = TMM_GUEST(obj);
+ uint32_t value;
+
+ if (!visit_type_uint32(v, name, &value, errp)) {
+ return;
+ }
+
+ if (value >= TMM_MAX_PMU_CTRS) {
+ error_setg(errp, "invalid number of PMU counters");
+ return;
+ }
+
+ guest->num_pmu_cntrs = value;
+}
+
+static int tmm_get_measurement_algo(Object *obj, Error **errp G_GNUC_UNUSED)
+{
+ TmmGuest *guest = TMM_GUEST(obj);
+
+ return guest->measurement_algo;
+}
+
+static void tmm_set_measurement_algo(Object *obj, int algo, Error **errp G_GNUC_UNUSED)
+{
+ TmmGuest *guest = TMM_GUEST(obj);
+
+ guest->measurement_algo = algo;
+}
+
+static void tmm_guest_class_init(ObjectClass *oc, void *data)
+{
+ object_class_property_add_enum(oc, "measurement-algo",
+ "TmmGuestMeasurementAlgo",
+ &TmmGuestMeasurementAlgo_lookup,
+ tmm_get_measurement_algo,
+ tmm_set_measurement_algo);
+ object_class_property_set_description(oc, "measurement-algo",
+ "cvm measurement algorithm ('sha256', 'sha512')");
+ /*
+ * This is not ideal. Normally SVE parameters are given to -cpu, but the
+ * cvm parameters are needed much earlier than CPU initialization. We also
+ * don't have a way to discover what is supported at the moment, the idea is
+ * that the user knows exactly what hardware it is running on because these
+ * parameters are part of the measurement and play in the attestation.
+ */
+ object_class_property_add(oc, "sve-vector-length", "uint32", tmm_get_sve_vl,
+ tmm_set_sve_vl, NULL, NULL);
+ object_class_property_set_description(oc, "sve-vector-length",
+ "SVE vector length. 0 disables SVE (the default)");
+ object_class_property_add(oc, "num-pmu-counters", "uint32",
+ tmm_get_num_pmu_cntrs, tmm_set_num_pmu_cntrs,
+ NULL, NULL);
+ object_class_property_set_description(oc, "num-pmu-counters",
+ "Number of PMU counters");
+}
+
+static void tmm_guest_instance_init(Object *obj)
+{
+ if (tmm_guest) {
+ error_report("a single instance of TmmGuest is supported");
+ exit(1);
+ }
+ tmm_guest = TMM_GUEST(obj);
+}
+
+static const TypeInfo tmm_guest_info = {
+ .parent = TYPE_CONFIDENTIAL_GUEST_SUPPORT,
+ .name = TYPE_TMM_GUEST,
+ .instance_size = sizeof(struct TmmGuest),
+ .instance_init = tmm_guest_instance_init,
+ .class_init = tmm_guest_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_USER_CREATABLE },
+ { }
+ }
+};
+
+static void tmm_register_types(void)
+{
+ type_register_static(&tmm_guest_info);
+}
+type_init(tmm_register_types);
diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 1ceb72a1c1..ee5ba68305 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -613,6 +613,10 @@ bool write_list_to_kvmstate(ARMCPU *cpu, int level)
continue;
}
+ if (virtcca_cvm_enabled() && regidx == KVM_REG_ARM_TIMER_CNT) {
+ continue;
+ }
+
switch (regidx & KVM_REG_SIZE_MASK) {
case KVM_REG_SIZE_U32:
v32 = cpu->cpreg_values[i];
@@ -1212,7 +1216,7 @@ int kvm_arch_msi_data_to_gsi(uint32_t data)
bool kvm_arch_cpu_check_are_resettable(void)
{
- return true;
+ return !virtcca_cvm_enabled();
}
static void kvm_arch_get_eager_split_size(Object *obj, Visitor *v,
diff --git a/target/arm/kvm64.c b/target/arm/kvm64.c
index 8f01d485b0..b099287ed0 100644
--- a/target/arm/kvm64.c
+++ b/target/arm/kvm64.c
@@ -584,6 +584,11 @@ static int kvm_arm_sve_set_vls(CPUState *cs)
assert(cpu->sve_max_vq <= KVM_ARM64_SVE_VQ_MAX);
+ if (virtcca_cvm_enabled()) {
+ /* Already set through tmm config */
+ return 0;
+ }
+
return kvm_set_one_reg(cs, KVM_REG_ARM64_SVE_VLS, &vls[0]);
}
diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h
index bf4df54c96..d6c7139f4a 100644
--- a/target/arm/kvm_arm.h
+++ b/target/arm/kvm_arm.h
@@ -388,6 +388,11 @@ void kvm_arm_pvtime_init(CPUState *cs, uint64_t ipa);
int kvm_arm_set_irq(int cpu, int irqtype, int irq, int level);
+void tmm_add_ram_region(hwaddr base1, hwaddr len1, hwaddr base2, hwaddr len2, bool populate);
+
+int kvm_arm_tmm_init(ConfidentialGuestSupport *cgs, Error **errp);
+bool kvm_arm_tmm_enabled(void);
+
/**
* kvm_arm_set_smccc_filter
* @func: funcion
@@ -475,6 +480,17 @@ static inline int kvm_arm_set_smccc_filter(uint64_t func, uint8_t faction)
{
g_assert_not_reached();
}
+
+static inline int kvm_arm_tmm_init(ConfidentialGuestSupport *cgs, Error **errp G_GNUC_UNUSED)
+{
+ g_assert_not_reached();
+}
+
+static inline void tmm_add_ram_region(hwaddr base1, hwaddr len1, hwaddr base2,
+ hwaddr len2, bool populate)
+{
+ g_assert_not_reached();
+}
#endif
/**
diff --git a/target/arm/meson.build b/target/arm/meson.build
index d1dd4932ed..389ee54658 100644
--- a/target/arm/meson.build
+++ b/target/arm/meson.build
@@ -10,6 +10,7 @@ arm_ss.add(zlib)
arm_ss.add(when: 'CONFIG_KVM', if_true: files('hyp_gdbstub.c', 'kvm.c', 'kvm64.c'), if_false: files('kvm-stub.c'))
arm_ss.add(when: 'CONFIG_HVF', if_true: files('hyp_gdbstub.c'))
+arm_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c', 'kvm64.c', 'kvm-tmm.c'), if_false: files('kvm-stub.c'))
arm_ss.add(when: 'TARGET_AARCH64', if_true: files(
'cpu64.c',
--
2.41.0.windows.1
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