[PATCH 093/128] KVM: selftests: Return created vcpu from vm_vcpu_add_default()
From: Sean Christopherson
Date: Wed May 04 2022 - 19:08:18 EST
Return the created 'struct kvm_vcpu' object from vm_vcpu_add_default(),
which cleans up a few tests and will eventually allow removing vcpu_get()
entirely.
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
.../selftests/kvm/include/aarch64/processor.h | 5 +++--
.../selftests/kvm/include/kvm_util_base.h | 10 ++++++----
.../selftests/kvm/lib/aarch64/processor.c | 20 +++++++++++--------
.../selftests/kvm/lib/riscv/processor.c | 20 +++++++++++--------
.../selftests/kvm/lib/s390x/processor.c | 18 ++++++++++-------
.../selftests/kvm/lib/x86_64/processor.c | 20 +++++++++++--------
.../kvm/x86_64/pmu_event_filter_test.c | 4 +---
.../selftests/kvm/x86_64/tsc_scaling_sync.c | 3 +--
8 files changed, 58 insertions(+), 42 deletions(-)
diff --git a/tools/testing/selftests/kvm/include/aarch64/processor.h b/tools/testing/selftests/kvm/include/aarch64/processor.h
index 9a430980100e..5999e7ae7b29 100644
--- a/tools/testing/selftests/kvm/include/aarch64/processor.h
+++ b/tools/testing/selftests/kvm/include/aarch64/processor.h
@@ -64,8 +64,9 @@ static inline void set_reg(struct kvm_vm *vm, uint32_t vcpuid, uint64_t id, uint
}
void aarch64_vcpu_setup(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_vcpu_init *init);
-void aarch64_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpuid,
- struct kvm_vcpu_init *init, void *guest_code);
+struct kvm_vcpu *aarch64_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpu_id,
+ struct kvm_vcpu_init *init,
+ void *guest_code);
struct ex_regs {
u64 regs[31];
diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h
index 5e316f7cd927..de36e7e91796 100644
--- a/tools/testing/selftests/kvm/include/kvm_util_base.h
+++ b/tools/testing/selftests/kvm/include/kvm_util_base.h
@@ -655,12 +655,14 @@ static inline void vcpu_dump(FILE *stream, struct kvm_vm *vm, uint32_t vcpuid,
* vcpuid - The id of the VCPU to add to the VM.
* guest_code - The vCPU's entry point
*/
-void vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code);
+struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id,
+ void *guest_code);
-static inline void vm_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpuid,
- void *guest_code)
+static inline struct kvm_vcpu *vm_vcpu_add_default(struct kvm_vm *vm,
+ uint32_t vcpu_id,
+ void *guest_code)
{
- vm_arch_vcpu_add(vm, vcpuid, guest_code);
+ return vm_arch_vcpu_add(vm, vcpu_id, guest_code);
}
void virt_arch_pgd_alloc(struct kvm_vm *vm);
diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c
index 653e740c46b1..089e6de2160c 100644
--- a/tools/testing/selftests/kvm/lib/aarch64/processor.c
+++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c
@@ -314,25 +314,29 @@ void vcpu_arch_dump(FILE *stream, struct kvm_vm *vm, uint32_t vcpuid, uint8_t in
indent, "", pstate, pc);
}
-void aarch64_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpuid,
- struct kvm_vcpu_init *init, void *guest_code)
+struct kvm_vcpu *aarch64_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpu_id,
+ struct kvm_vcpu_init *init,
+ void *guest_code)
{
size_t stack_size = vm->page_size == 4096 ?
DEFAULT_STACK_PGS * vm->page_size :
vm->page_size;
uint64_t stack_vaddr = vm_vaddr_alloc(vm, stack_size,
DEFAULT_ARM64_GUEST_STACK_VADDR_MIN);
+ struct kvm_vcpu *vcpu = vm_vcpu_add(vm, vcpu_id);
- vm_vcpu_add(vm, vcpuid);
- aarch64_vcpu_setup(vm, vcpuid, init);
+ aarch64_vcpu_setup(vm, vcpu_id, init);
- set_reg(vm, vcpuid, ARM64_CORE_REG(sp_el1), stack_vaddr + stack_size);
- set_reg(vm, vcpuid, ARM64_CORE_REG(regs.pc), (uint64_t)guest_code);
+ set_reg(vm, vcpu_id, ARM64_CORE_REG(sp_el1), stack_vaddr + stack_size);
+ set_reg(vm, vcpu_id, ARM64_CORE_REG(regs.pc), (uint64_t)guest_code);
+
+ return vcpu;
}
-void vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code)
+struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id,
+ void *guest_code)
{
- aarch64_vcpu_add_default(vm, vcpuid, NULL, guest_code);
+ return aarch64_vcpu_add_default(vm, vcpu_id, NULL, guest_code);
}
void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...)
diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c
index e43651ad7729..71bd7975d65e 100644
--- a/tools/testing/selftests/kvm/lib/riscv/processor.c
+++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
@@ -273,7 +273,8 @@ static void __aligned(16) guest_hang(void)
;
}
-void vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code)
+struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id,
+ void *guest_code)
{
int r;
size_t stack_size = vm->page_size == 4096 ?
@@ -283,9 +284,10 @@ void vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code)
DEFAULT_RISCV_GUEST_STACK_VADDR_MIN);
unsigned long current_gp = 0;
struct kvm_mp_state mps;
+ struct kvm_vcpu *vcpu;
- vm_vcpu_add(vm, vcpuid);
- riscv_vcpu_mmu_setup(vm, vcpuid);
+ vcpu = vm_vcpu_add(vm, vcpu_id);
+ riscv_vcpu_mmu_setup(vm, vcpu_id);
/*
* With SBI HSM support in KVM RISC-V, all secondary VCPUs are
@@ -293,23 +295,25 @@ void vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code)
* are powered-on using KVM_SET_MP_STATE ioctl().
*/
mps.mp_state = KVM_MP_STATE_RUNNABLE;
- r = __vcpu_ioctl(vm, vcpuid, KVM_SET_MP_STATE, &mps);
+ r = __vcpu_ioctl(vm, vcpu_id, KVM_SET_MP_STATE, &mps);
TEST_ASSERT(!r, "IOCTL KVM_SET_MP_STATE failed (error %d)", r);
/* Setup global pointer of guest to be same as the host */
asm volatile (
"add %0, gp, zero" : "=r" (current_gp) : : "memory");
- set_reg(vm, vcpuid, RISCV_CORE_REG(regs.gp), current_gp);
+ set_reg(vm, vcpu_id, RISCV_CORE_REG(regs.gp), current_gp);
/* Setup stack pointer and program counter of guest */
- set_reg(vm, vcpuid, RISCV_CORE_REG(regs.sp),
+ set_reg(vm, vcpu_id, RISCV_CORE_REG(regs.sp),
stack_vaddr + stack_size);
- set_reg(vm, vcpuid, RISCV_CORE_REG(regs.pc),
+ set_reg(vm, vcpu_id, RISCV_CORE_REG(regs.pc),
(unsigned long)guest_code);
/* Setup default exception vector of guest */
- set_reg(vm, vcpuid, RISCV_CSR_REG(stvec),
+ set_reg(vm, vcpu_id, RISCV_CSR_REG(stvec),
(unsigned long)guest_hang);
+
+ return vcpu;
}
void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...)
diff --git a/tools/testing/selftests/kvm/lib/s390x/processor.c b/tools/testing/selftests/kvm/lib/s390x/processor.c
index c2fe56a3fb74..cf759844b226 100644
--- a/tools/testing/selftests/kvm/lib/s390x/processor.c
+++ b/tools/testing/selftests/kvm/lib/s390x/processor.c
@@ -154,12 +154,14 @@ void virt_arch_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent)
virt_dump_region(stream, vm, indent, vm->pgd);
}
-void vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code)
+struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id,
+ void *guest_code)
{
size_t stack_size = DEFAULT_STACK_PGS * getpagesize();
uint64_t stack_vaddr;
struct kvm_regs regs;
struct kvm_sregs sregs;
+ struct kvm_vcpu *vcpu;
struct kvm_run *run;
TEST_ASSERT(vm->page_size == 4096, "Unsupported page size: 0x%x",
@@ -168,21 +170,23 @@ void vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code)
stack_vaddr = vm_vaddr_alloc(vm, stack_size,
DEFAULT_GUEST_STACK_VADDR_MIN);
- vm_vcpu_add(vm, vcpuid);
+ vcpu = vm_vcpu_add(vm, vcpu_id);
/* Setup guest registers */
- vcpu_regs_get(vm, vcpuid, ®s);
+ vcpu_regs_get(vm, vcpu_id, ®s);
regs.gprs[15] = stack_vaddr + (DEFAULT_STACK_PGS * getpagesize()) - 160;
- vcpu_regs_set(vm, vcpuid, ®s);
+ vcpu_regs_set(vm, vcpu_id, ®s);
- vcpu_sregs_get(vm, vcpuid, &sregs);
+ vcpu_sregs_get(vm, vcpu_id, &sregs);
sregs.crs[0] |= 0x00040000; /* Enable floating point regs */
sregs.crs[1] = vm->pgd | 0xf; /* Primary region table */
- vcpu_sregs_set(vm, vcpuid, &sregs);
+ vcpu_sregs_set(vm, vcpu_id, &sregs);
- run = vcpu_state(vm, vcpuid);
+ run = vcpu_state(vm, vcpu_id);
run->psw_mask = 0x0400000180000000ULL; /* DAT enabled + 64 bit mode */
run->psw_addr = (uintptr_t)guest_code;
+
+ return vcpu;
}
void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...)
diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c
index c5335345323c..1d0c6d49b8a9 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
@@ -633,29 +633,33 @@ void vm_xsave_req_perm(int bit)
bitmask);
}
-void vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code)
+struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id,
+ void *guest_code)
{
struct kvm_mp_state mp_state;
struct kvm_regs regs;
vm_vaddr_t stack_vaddr;
+ struct kvm_vcpu *vcpu;
+
stack_vaddr = vm_vaddr_alloc(vm, DEFAULT_STACK_PGS * getpagesize(),
DEFAULT_GUEST_STACK_VADDR_MIN);
- /* Create VCPU */
- vm_vcpu_add(vm, vcpuid);
- vcpu_set_cpuid(vm, vcpuid, kvm_get_supported_cpuid());
- vcpu_setup(vm, vcpuid);
+ vcpu = vm_vcpu_add(vm, vcpu_id);
+ vcpu_set_cpuid(vm, vcpu_id, kvm_get_supported_cpuid());
+ vcpu_setup(vm, vcpu_id);
/* Setup guest general purpose registers */
- vcpu_regs_get(vm, vcpuid, ®s);
+ vcpu_regs_get(vm, vcpu_id, ®s);
regs.rflags = regs.rflags | 0x2;
regs.rsp = stack_vaddr + (DEFAULT_STACK_PGS * getpagesize());
regs.rip = (unsigned long) guest_code;
- vcpu_regs_set(vm, vcpuid, ®s);
+ vcpu_regs_set(vm, vcpu_id, ®s);
/* Setup the MP state */
mp_state.mp_state = 0;
- vcpu_set_mp_state(vm, vcpuid, &mp_state);
+ vcpu_set_mp_state(vm, vcpu_id, &mp_state);
+
+ return vcpu;
}
/*
diff --git a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
index 535af2d2ad59..38f109ab0fee 100644
--- a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
+++ b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
@@ -346,10 +346,8 @@ static void test_pmu_config_disable(void (*guest_code)(void))
cap.args[0] = KVM_PMU_CAP_DISABLE;
vm_enable_cap(vm, &cap);
- vm_vcpu_add_default(vm, 0, guest_code);
+ vcpu = vm_vcpu_add_default(vm, 0, guest_code);
vm_init_descriptor_tables(vm);
-
- vcpu = vcpu_get(vm, 0);
vcpu_init_descriptor_tables(vm, vcpu->id);
TEST_ASSERT(!sanity_check_pmu(vcpu),
diff --git a/tools/testing/selftests/kvm/x86_64/tsc_scaling_sync.c b/tools/testing/selftests/kvm/x86_64/tsc_scaling_sync.c
index b7cd5c47fc53..ea70ca2e63c3 100644
--- a/tools/testing/selftests/kvm/x86_64/tsc_scaling_sync.c
+++ b/tools/testing/selftests/kvm/x86_64/tsc_scaling_sync.c
@@ -54,8 +54,7 @@ static void *run_vcpu(void *_cpu_nr)
/* The kernel is fine, but vm_vcpu_add_default() needs locking */
pthread_spin_lock(&create_lock);
- vm_vcpu_add_default(vm, vcpu_id, guest_code);
- vcpu = vcpu_get(vm, vcpu_id);
+ vcpu = vm_vcpu_add_default(vm, vcpu_id, guest_code);
if (!first_cpu_done) {
first_cpu_done = true;
--
2.36.0.464.gb9c8b46e94-goog