| Message ID | 20241128005547.4077116-3-seanjc@google.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | KVM: selftests: "tree" wide overhauls | expand |
On Wed, 27 Nov 2024 16:55:33 -0800 Sean Christopherson <seanjc@google.com> wrote: > Return a uint64_t from vcpu_get_reg() instead of having the caller provide > a pointer to storage, as none of the vcpu_get_reg() usage in KVM selftests > accesses a register larger than 64 bits, and vcpu_set_reg() only accepts a > 64-bit value. If a use case comes along that needs to get a register that > is larger than 64 bits, then a utility can be added to assert success and > take a void pointer, but until then, forcing an out param yields ugly code > and prevents feeding the output of vcpu_get_reg() into vcpu_set_reg(). > > Reviewed-by: Andrew Jones <ajones@ventanamicro.com> > Signed-off-by: Sean Christopherson <seanjc@google.com> for the s390 part: Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com> > --- > .../selftests/kvm/aarch64/aarch32_id_regs.c | 10 +-- > .../selftests/kvm/aarch64/debug-exceptions.c | 4 +- > .../selftests/kvm/aarch64/hypercalls.c | 6 +- > .../selftests/kvm/aarch64/no-vgic-v3.c | 2 +- > .../testing/selftests/kvm/aarch64/psci_test.c | 6 +- > .../selftests/kvm/aarch64/set_id_regs.c | 18 ++--- > .../kvm/aarch64/vpmu_counter_access.c | 19 +++--- > .../testing/selftests/kvm/include/kvm_util.h | 6 +- > .../selftests/kvm/lib/aarch64/processor.c | 8 +-- > .../selftests/kvm/lib/riscv/processor.c | 66 +++++++++---------- > .../testing/selftests/kvm/riscv/arch_timer.c | 2 +- > .../testing/selftests/kvm/riscv/ebreak_test.c | 2 +- > .../selftests/kvm/riscv/sbi_pmu_test.c | 2 +- > tools/testing/selftests/kvm/s390x/resets.c | 2 +- > tools/testing/selftests/kvm/steal_time.c | 3 +- > 15 files changed, 78 insertions(+), 78 deletions(-) > > diff --git a/tools/testing/selftests/kvm/aarch64/aarch32_id_regs.c b/tools/testing/selftests/kvm/aarch64/aarch32_id_regs.c > index 8e5bd07a3727..447d61cae4db 100644 > --- a/tools/testing/selftests/kvm/aarch64/aarch32_id_regs.c > +++ b/tools/testing/selftests/kvm/aarch64/aarch32_id_regs.c > @@ -97,7 +97,7 @@ static void test_user_raz_wi(struct kvm_vcpu *vcpu) > uint64_t reg_id = raz_wi_reg_ids[i]; > uint64_t val; > > - vcpu_get_reg(vcpu, reg_id, &val); > + val = vcpu_get_reg(vcpu, reg_id); > TEST_ASSERT_EQ(val, 0); > > /* > @@ -106,7 +106,7 @@ static void test_user_raz_wi(struct kvm_vcpu *vcpu) > */ > vcpu_set_reg(vcpu, reg_id, BAD_ID_REG_VAL); > > - vcpu_get_reg(vcpu, reg_id, &val); > + val = vcpu_get_reg(vcpu, reg_id); > TEST_ASSERT_EQ(val, 0); > } > } > @@ -126,14 +126,14 @@ static void test_user_raz_invariant(struct kvm_vcpu *vcpu) > uint64_t reg_id = raz_invariant_reg_ids[i]; > uint64_t val; > > - vcpu_get_reg(vcpu, reg_id, &val); > + val = vcpu_get_reg(vcpu, reg_id); > TEST_ASSERT_EQ(val, 0); > > r = __vcpu_set_reg(vcpu, reg_id, BAD_ID_REG_VAL); > TEST_ASSERT(r < 0 && errno == EINVAL, > "unexpected KVM_SET_ONE_REG error: r=%d, errno=%d", r, errno); > > - vcpu_get_reg(vcpu, reg_id, &val); > + val = vcpu_get_reg(vcpu, reg_id); > TEST_ASSERT_EQ(val, 0); > } > } > @@ -144,7 +144,7 @@ static bool vcpu_aarch64_only(struct kvm_vcpu *vcpu) > { > uint64_t val, el0; > > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), &val); > + val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1)); > > el0 = FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_EL0), val); > return el0 == ID_AA64PFR0_EL1_ELx_64BIT_ONLY; > diff --git a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c > index ff7a949fc96a..c7fb55c9135b 100644 > --- a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c > +++ b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c > @@ -501,7 +501,7 @@ void test_single_step_from_userspace(int test_cnt) > TEST_ASSERT(ss_enable, "Unexpected KVM_EXIT_DEBUG"); > > /* Check if the current pc is expected. */ > - vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pc), &pc); > + pc = vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pc)); > TEST_ASSERT(!test_pc || pc == test_pc, > "Unexpected pc 0x%lx (expected 0x%lx)", > pc, test_pc); > @@ -583,7 +583,7 @@ int main(int argc, char *argv[]) > uint64_t aa64dfr0; > > vm = vm_create_with_one_vcpu(&vcpu, guest_code); > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64DFR0_EL1), &aa64dfr0); > + aa64dfr0 = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64DFR0_EL1)); > __TEST_REQUIRE(debug_version(aa64dfr0) >= 6, > "Armv8 debug architecture not supported."); > kvm_vm_free(vm); > diff --git a/tools/testing/selftests/kvm/aarch64/hypercalls.c b/tools/testing/selftests/kvm/aarch64/hypercalls.c > index 9d192ce0078d..ec54ec7726e9 100644 > --- a/tools/testing/selftests/kvm/aarch64/hypercalls.c > +++ b/tools/testing/selftests/kvm/aarch64/hypercalls.c > @@ -173,7 +173,7 @@ static void test_fw_regs_before_vm_start(struct kvm_vcpu *vcpu) > const struct kvm_fw_reg_info *reg_info = &fw_reg_info[i]; > > /* First 'read' should be an upper limit of the features supported */ > - vcpu_get_reg(vcpu, reg_info->reg, &val); > + val = vcpu_get_reg(vcpu, reg_info->reg); > TEST_ASSERT(val == FW_REG_ULIMIT_VAL(reg_info->max_feat_bit), > "Expected all the features to be set for reg: 0x%lx; expected: 0x%lx; read: 0x%lx", > reg_info->reg, FW_REG_ULIMIT_VAL(reg_info->max_feat_bit), val); > @@ -184,7 +184,7 @@ static void test_fw_regs_before_vm_start(struct kvm_vcpu *vcpu) > "Failed to clear all the features of reg: 0x%lx; ret: %d", > reg_info->reg, errno); > > - vcpu_get_reg(vcpu, reg_info->reg, &val); > + val = vcpu_get_reg(vcpu, reg_info->reg); > TEST_ASSERT(val == 0, > "Expected all the features to be cleared for reg: 0x%lx", reg_info->reg); > > @@ -214,7 +214,7 @@ static void test_fw_regs_after_vm_start(struct kvm_vcpu *vcpu) > * Before starting the VM, the test clears all the bits. > * Check if that's still the case. > */ > - vcpu_get_reg(vcpu, reg_info->reg, &val); > + val = vcpu_get_reg(vcpu, reg_info->reg); > TEST_ASSERT(val == 0, > "Expected all the features to be cleared for reg: 0x%lx", > reg_info->reg); > diff --git a/tools/testing/selftests/kvm/aarch64/no-vgic-v3.c b/tools/testing/selftests/kvm/aarch64/no-vgic-v3.c > index 58304bbc2036..ebd70430c89d 100644 > --- a/tools/testing/selftests/kvm/aarch64/no-vgic-v3.c > +++ b/tools/testing/selftests/kvm/aarch64/no-vgic-v3.c > @@ -164,7 +164,7 @@ int main(int argc, char *argv[]) > uint64_t pfr0; > > vm = vm_create_with_one_vcpu(&vcpu, NULL); > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), &pfr0); > + pfr0 = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1)); > __TEST_REQUIRE(FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_GIC), pfr0), > "GICv3 not supported."); > kvm_vm_free(vm); > diff --git a/tools/testing/selftests/kvm/aarch64/psci_test.c b/tools/testing/selftests/kvm/aarch64/psci_test.c > index eaa7655fefc1..0ab7d5a24482 100644 > --- a/tools/testing/selftests/kvm/aarch64/psci_test.c > +++ b/tools/testing/selftests/kvm/aarch64/psci_test.c > @@ -111,8 +111,8 @@ static void assert_vcpu_reset(struct kvm_vcpu *vcpu) > { > uint64_t obs_pc, obs_x0; > > - vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pc), &obs_pc); > - vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.regs[0]), &obs_x0); > + obs_pc = vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pc)); > + obs_x0 = vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.regs[0])); > > TEST_ASSERT(obs_pc == CPU_ON_ENTRY_ADDR, > "unexpected target cpu pc: %lx (expected: %lx)", > @@ -152,7 +152,7 @@ static void host_test_cpu_on(void) > */ > vcpu_power_off(target); > > - vcpu_get_reg(target, KVM_ARM64_SYS_REG(SYS_MPIDR_EL1), &target_mpidr); > + target_mpidr = vcpu_get_reg(target, KVM_ARM64_SYS_REG(SYS_MPIDR_EL1)); > vcpu_args_set(source, 1, target_mpidr & MPIDR_HWID_BITMASK); > enter_guest(source); > > diff --git a/tools/testing/selftests/kvm/aarch64/set_id_regs.c b/tools/testing/selftests/kvm/aarch64/set_id_regs.c > index a79b7f18452d..25ba7d382196 100644 > --- a/tools/testing/selftests/kvm/aarch64/set_id_regs.c > +++ b/tools/testing/selftests/kvm/aarch64/set_id_regs.c > @@ -346,7 +346,7 @@ static uint64_t test_reg_set_success(struct kvm_vcpu *vcpu, uint64_t reg, > uint64_t mask = ftr_bits->mask; > uint64_t val, new_val, ftr; > > - vcpu_get_reg(vcpu, reg, &val); > + val = vcpu_get_reg(vcpu, reg); > ftr = (val & mask) >> shift; > > ftr = get_safe_value(ftr_bits, ftr); > @@ -356,7 +356,7 @@ static uint64_t test_reg_set_success(struct kvm_vcpu *vcpu, uint64_t reg, > val |= ftr; > > vcpu_set_reg(vcpu, reg, val); > - vcpu_get_reg(vcpu, reg, &new_val); > + new_val = vcpu_get_reg(vcpu, reg); > TEST_ASSERT_EQ(new_val, val); > > return new_val; > @@ -370,7 +370,7 @@ static void test_reg_set_fail(struct kvm_vcpu *vcpu, uint64_t reg, > uint64_t val, old_val, ftr; > int r; > > - vcpu_get_reg(vcpu, reg, &val); > + val = vcpu_get_reg(vcpu, reg); > ftr = (val & mask) >> shift; > > ftr = get_invalid_value(ftr_bits, ftr); > @@ -384,7 +384,7 @@ static void test_reg_set_fail(struct kvm_vcpu *vcpu, uint64_t reg, > TEST_ASSERT(r < 0 && errno == EINVAL, > "Unexpected KVM_SET_ONE_REG error: r=%d, errno=%d", r, errno); > > - vcpu_get_reg(vcpu, reg, &val); > + val = vcpu_get_reg(vcpu, reg); > TEST_ASSERT_EQ(val, old_val); > } > > @@ -576,7 +576,7 @@ static void test_clidr(struct kvm_vcpu *vcpu) > uint64_t clidr; > int level; > > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_CLIDR_EL1), &clidr); > + clidr = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_CLIDR_EL1)); > > /* find the first empty level in the cache hierarchy */ > for (level = 1; level < 7; level++) { > @@ -601,7 +601,7 @@ static void test_ctr(struct kvm_vcpu *vcpu) > { > u64 ctr; > > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_CTR_EL0), &ctr); > + ctr = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_CTR_EL0)); > ctr &= ~CTR_EL0_DIC_MASK; > if (ctr & CTR_EL0_IminLine_MASK) > ctr--; > @@ -617,7 +617,7 @@ static void test_vcpu_ftr_id_regs(struct kvm_vcpu *vcpu) > test_clidr(vcpu); > test_ctr(vcpu); > > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_MPIDR_EL1), &val); > + val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_MPIDR_EL1)); > val++; > vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_MPIDR_EL1), val); > > @@ -630,7 +630,7 @@ static void test_assert_id_reg_unchanged(struct kvm_vcpu *vcpu, uint32_t encodin > size_t idx = encoding_to_range_idx(encoding); > uint64_t observed; > > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(encoding), &observed); > + observed = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(encoding)); > TEST_ASSERT_EQ(test_reg_vals[idx], observed); > } > > @@ -665,7 +665,7 @@ int main(void) > vm = vm_create_with_one_vcpu(&vcpu, guest_code); > > /* Check for AARCH64 only system */ > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), &val); > + val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1)); > el0 = FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_EL0), val); > aarch64_only = (el0 == ID_AA64PFR0_EL1_ELx_64BIT_ONLY); > > diff --git a/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c b/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c > index f9c0c86d7e85..f16b3b27e32e 100644 > --- a/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c > +++ b/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c > @@ -440,8 +440,7 @@ static void create_vpmu_vm(void *guest_code) > "Failed to create vgic-v3, skipping"); > > /* Make sure that PMUv3 support is indicated in the ID register */ > - vcpu_get_reg(vpmu_vm.vcpu, > - KVM_ARM64_SYS_REG(SYS_ID_AA64DFR0_EL1), &dfr0); > + dfr0 = vcpu_get_reg(vpmu_vm.vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64DFR0_EL1)); > pmuver = FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_PMUVer), dfr0); > TEST_ASSERT(pmuver != ID_AA64DFR0_EL1_PMUVer_IMP_DEF && > pmuver >= ID_AA64DFR0_EL1_PMUVer_IMP, > @@ -484,7 +483,7 @@ static void test_create_vpmu_vm_with_pmcr_n(uint64_t pmcr_n, bool expect_fail) > create_vpmu_vm(guest_code); > vcpu = vpmu_vm.vcpu; > > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0), &pmcr_orig); > + pmcr_orig = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0)); > pmcr = pmcr_orig; > > /* > @@ -493,7 +492,7 @@ static void test_create_vpmu_vm_with_pmcr_n(uint64_t pmcr_n, bool expect_fail) > */ > set_pmcr_n(&pmcr, pmcr_n); > vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0), pmcr); > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0), &pmcr); > + pmcr = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0)); > > if (expect_fail) > TEST_ASSERT(pmcr_orig == pmcr, > @@ -521,7 +520,7 @@ static void run_access_test(uint64_t pmcr_n) > vcpu = vpmu_vm.vcpu; > > /* Save the initial sp to restore them later to run the guest again */ > - vcpu_get_reg(vcpu, ARM64_CORE_REG(sp_el1), &sp); > + sp = vcpu_get_reg(vcpu, ARM64_CORE_REG(sp_el1)); > > run_vcpu(vcpu, pmcr_n); > > @@ -572,12 +571,12 @@ static void run_pmregs_validity_test(uint64_t pmcr_n) > * Test if the 'set' and 'clr' variants of the registers > * are initialized based on the number of valid counters. > */ > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(set_reg_id), ®_val); > + reg_val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(set_reg_id)); > TEST_ASSERT((reg_val & (~valid_counters_mask)) == 0, > "Initial read of set_reg: 0x%llx has unimplemented counters enabled: 0x%lx", > KVM_ARM64_SYS_REG(set_reg_id), reg_val); > > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(clr_reg_id), ®_val); > + reg_val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(clr_reg_id)); > TEST_ASSERT((reg_val & (~valid_counters_mask)) == 0, > "Initial read of clr_reg: 0x%llx has unimplemented counters enabled: 0x%lx", > KVM_ARM64_SYS_REG(clr_reg_id), reg_val); > @@ -589,12 +588,12 @@ static void run_pmregs_validity_test(uint64_t pmcr_n) > */ > vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(set_reg_id), max_counters_mask); > > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(set_reg_id), ®_val); > + reg_val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(set_reg_id)); > TEST_ASSERT((reg_val & (~valid_counters_mask)) == 0, > "Read of set_reg: 0x%llx has unimplemented counters enabled: 0x%lx", > KVM_ARM64_SYS_REG(set_reg_id), reg_val); > > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(clr_reg_id), ®_val); > + reg_val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(clr_reg_id)); > TEST_ASSERT((reg_val & (~valid_counters_mask)) == 0, > "Read of clr_reg: 0x%llx has unimplemented counters enabled: 0x%lx", > KVM_ARM64_SYS_REG(clr_reg_id), reg_val); > @@ -625,7 +624,7 @@ static uint64_t get_pmcr_n_limit(void) > uint64_t pmcr; > > create_vpmu_vm(guest_code); > - vcpu_get_reg(vpmu_vm.vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0), &pmcr); > + pmcr = vcpu_get_reg(vpmu_vm.vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0)); > destroy_vpmu_vm(); > return get_pmcr_n(pmcr); > } > diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h > index bc7c242480d6..287a3ec06df4 100644 > --- a/tools/testing/selftests/kvm/include/kvm_util.h > +++ b/tools/testing/selftests/kvm/include/kvm_util.h > @@ -702,11 +702,13 @@ static inline int __vcpu_set_reg(struct kvm_vcpu *vcpu, uint64_t id, uint64_t va > > return __vcpu_ioctl(vcpu, KVM_SET_ONE_REG, ®); > } > -static inline void vcpu_get_reg(struct kvm_vcpu *vcpu, uint64_t id, void *addr) > +static inline uint64_t vcpu_get_reg(struct kvm_vcpu *vcpu, uint64_t id) > { > - struct kvm_one_reg reg = { .id = id, .addr = (uint64_t)addr }; > + uint64_t val; > + struct kvm_one_reg reg = { .id = id, .addr = (uint64_t)&val }; > > vcpu_ioctl(vcpu, KVM_GET_ONE_REG, ®); > + return val; > } > static inline void vcpu_set_reg(struct kvm_vcpu *vcpu, uint64_t id, uint64_t val) > { > diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c > index 698e34f39241..7ba3aa3755f3 100644 > --- a/tools/testing/selftests/kvm/lib/aarch64/processor.c > +++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c > @@ -281,8 +281,8 @@ void aarch64_vcpu_setup(struct kvm_vcpu *vcpu, struct kvm_vcpu_init *init) > */ > vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_CPACR_EL1), 3 << 20); > > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_SCTLR_EL1), &sctlr_el1); > - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_TCR_EL1), &tcr_el1); > + sctlr_el1 = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_SCTLR_EL1)); > + tcr_el1 = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_TCR_EL1)); > > /* Configure base granule size */ > switch (vm->mode) { > @@ -360,8 +360,8 @@ void vcpu_arch_dump(FILE *stream, struct kvm_vcpu *vcpu, uint8_t indent) > { > uint64_t pstate, pc; > > - vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pstate), &pstate); > - vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pc), &pc); > + pstate = vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pstate)); > + pc = vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pc)); > > fprintf(stream, "%*spstate: 0x%.16lx pc: 0x%.16lx\n", > indent, "", pstate, pc); > diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c > index 6ae47b3d6b25..dd663bcf0cc0 100644 > --- a/tools/testing/selftests/kvm/lib/riscv/processor.c > +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c > @@ -221,39 +221,39 @@ void vcpu_arch_dump(FILE *stream, struct kvm_vcpu *vcpu, uint8_t indent) > { > struct kvm_riscv_core core; > > - vcpu_get_reg(vcpu, RISCV_CORE_REG(mode), &core.mode); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.pc), &core.regs.pc); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.ra), &core.regs.ra); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.sp), &core.regs.sp); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.gp), &core.regs.gp); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.tp), &core.regs.tp); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t0), &core.regs.t0); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t1), &core.regs.t1); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t2), &core.regs.t2); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s0), &core.regs.s0); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s1), &core.regs.s1); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a0), &core.regs.a0); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a1), &core.regs.a1); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a2), &core.regs.a2); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a3), &core.regs.a3); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a4), &core.regs.a4); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a5), &core.regs.a5); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a6), &core.regs.a6); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a7), &core.regs.a7); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s2), &core.regs.s2); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s3), &core.regs.s3); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s4), &core.regs.s4); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s5), &core.regs.s5); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s6), &core.regs.s6); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s7), &core.regs.s7); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s8), &core.regs.s8); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s9), &core.regs.s9); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s10), &core.regs.s10); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s11), &core.regs.s11); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t3), &core.regs.t3); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t4), &core.regs.t4); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t5), &core.regs.t5); > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t6), &core.regs.t6); > + core.mode = vcpu_get_reg(vcpu, RISCV_CORE_REG(mode)); > + core.regs.pc = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.pc)); > + core.regs.ra = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.ra)); > + core.regs.sp = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.sp)); > + core.regs.gp = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.gp)); > + core.regs.tp = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.tp)); > + core.regs.t0 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t0)); > + core.regs.t1 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t1)); > + core.regs.t2 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t2)); > + core.regs.s0 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s0)); > + core.regs.s1 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s1)); > + core.regs.a0 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a0)); > + core.regs.a1 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a1)); > + core.regs.a2 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a2)); > + core.regs.a3 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a3)); > + core.regs.a4 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a4)); > + core.regs.a5 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a5)); > + core.regs.a6 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a6)); > + core.regs.a7 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a7)); > + core.regs.s2 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s2)); > + core.regs.s3 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s3)); > + core.regs.s4 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s4)); > + core.regs.s5 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s5)); > + core.regs.s6 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s6)); > + core.regs.s7 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s7)); > + core.regs.s8 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s8)); > + core.regs.s9 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s9)); > + core.regs.s10 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s10)); > + core.regs.s11 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s11)); > + core.regs.t3 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t3)); > + core.regs.t4 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t4)); > + core.regs.t5 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t5)); > + core.regs.t6 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t6)); > > fprintf(stream, > " MODE: 0x%lx\n", core.mode); > diff --git a/tools/testing/selftests/kvm/riscv/arch_timer.c b/tools/testing/selftests/kvm/riscv/arch_timer.c > index 2c792228ac0b..9e370800a6a2 100644 > --- a/tools/testing/selftests/kvm/riscv/arch_timer.c > +++ b/tools/testing/selftests/kvm/riscv/arch_timer.c > @@ -93,7 +93,7 @@ struct kvm_vm *test_vm_create(void) > vcpu_init_vector_tables(vcpus[i]); > > /* Initialize guest timer frequency. */ > - vcpu_get_reg(vcpus[0], RISCV_TIMER_REG(frequency), &timer_freq); > + timer_freq = vcpu_get_reg(vcpus[0], RISCV_TIMER_REG(frequency)); > sync_global_to_guest(vm, timer_freq); > pr_debug("timer_freq: %lu\n", timer_freq); > > diff --git a/tools/testing/selftests/kvm/riscv/ebreak_test.c b/tools/testing/selftests/kvm/riscv/ebreak_test.c > index 0e0712854953..cfed6c727bfc 100644 > --- a/tools/testing/selftests/kvm/riscv/ebreak_test.c > +++ b/tools/testing/selftests/kvm/riscv/ebreak_test.c > @@ -60,7 +60,7 @@ int main(void) > > TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_DEBUG); > > - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.pc), &pc); > + pc = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.pc)); > TEST_ASSERT_EQ(pc, LABEL_ADDRESS(sw_bp_1)); > > /* skip sw_bp_1 */ > diff --git a/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c b/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c > index f299cbfd23ca..f45c0ecc902d 100644 > --- a/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c > +++ b/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c > @@ -608,7 +608,7 @@ static void test_vm_events_overflow(void *guest_code) > > vcpu_init_vector_tables(vcpu); > /* Initialize guest timer frequency. */ > - vcpu_get_reg(vcpu, RISCV_TIMER_REG(frequency), &timer_freq); > + timer_freq = vcpu_get_reg(vcpu, RISCV_TIMER_REG(frequency)); > sync_global_to_guest(vm, timer_freq); > > run_vcpu(vcpu); > diff --git a/tools/testing/selftests/kvm/s390x/resets.c b/tools/testing/selftests/kvm/s390x/resets.c > index 357943f2bea8..b58f75b381e5 100644 > --- a/tools/testing/selftests/kvm/s390x/resets.c > +++ b/tools/testing/selftests/kvm/s390x/resets.c > @@ -61,7 +61,7 @@ static void test_one_reg(struct kvm_vcpu *vcpu, uint64_t id, uint64_t value) > { > uint64_t eval_reg; > > - vcpu_get_reg(vcpu, id, &eval_reg); > + eval_reg = vcpu_get_reg(vcpu, id); > TEST_ASSERT(eval_reg == value, "value == 0x%lx", value); > } > > diff --git a/tools/testing/selftests/kvm/steal_time.c b/tools/testing/selftests/kvm/steal_time.c > index a8d3afa0b86b..cce2520af720 100644 > --- a/tools/testing/selftests/kvm/steal_time.c > +++ b/tools/testing/selftests/kvm/steal_time.c > @@ -269,9 +269,8 @@ static void guest_code(int cpu) > static bool is_steal_time_supported(struct kvm_vcpu *vcpu) > { > uint64_t id = RISCV_SBI_EXT_REG(KVM_RISCV_SBI_EXT_STA); > - unsigned long enabled; > + unsigned long enabled = vcpu_get_reg(vcpu, id); > > - vcpu_get_reg(vcpu, id, &enabled); > TEST_ASSERT(enabled == 0 || enabled == 1, "Expected boolean result"); > > return enabled;
diff --git a/tools/testing/selftests/kvm/aarch64/aarch32_id_regs.c b/tools/testing/selftests/kvm/aarch64/aarch32_id_regs.c index 8e5bd07a3727..447d61cae4db 100644 --- a/tools/testing/selftests/kvm/aarch64/aarch32_id_regs.c +++ b/tools/testing/selftests/kvm/aarch64/aarch32_id_regs.c @@ -97,7 +97,7 @@ static void test_user_raz_wi(struct kvm_vcpu *vcpu) uint64_t reg_id = raz_wi_reg_ids[i]; uint64_t val; - vcpu_get_reg(vcpu, reg_id, &val); + val = vcpu_get_reg(vcpu, reg_id); TEST_ASSERT_EQ(val, 0); /* @@ -106,7 +106,7 @@ static void test_user_raz_wi(struct kvm_vcpu *vcpu) */ vcpu_set_reg(vcpu, reg_id, BAD_ID_REG_VAL); - vcpu_get_reg(vcpu, reg_id, &val); + val = vcpu_get_reg(vcpu, reg_id); TEST_ASSERT_EQ(val, 0); } } @@ -126,14 +126,14 @@ static void test_user_raz_invariant(struct kvm_vcpu *vcpu) uint64_t reg_id = raz_invariant_reg_ids[i]; uint64_t val; - vcpu_get_reg(vcpu, reg_id, &val); + val = vcpu_get_reg(vcpu, reg_id); TEST_ASSERT_EQ(val, 0); r = __vcpu_set_reg(vcpu, reg_id, BAD_ID_REG_VAL); TEST_ASSERT(r < 0 && errno == EINVAL, "unexpected KVM_SET_ONE_REG error: r=%d, errno=%d", r, errno); - vcpu_get_reg(vcpu, reg_id, &val); + val = vcpu_get_reg(vcpu, reg_id); TEST_ASSERT_EQ(val, 0); } } @@ -144,7 +144,7 @@ static bool vcpu_aarch64_only(struct kvm_vcpu *vcpu) { uint64_t val, el0; - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), &val); + val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1)); el0 = FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_EL0), val); return el0 == ID_AA64PFR0_EL1_ELx_64BIT_ONLY; diff --git a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c index ff7a949fc96a..c7fb55c9135b 100644 --- a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c +++ b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c @@ -501,7 +501,7 @@ void test_single_step_from_userspace(int test_cnt) TEST_ASSERT(ss_enable, "Unexpected KVM_EXIT_DEBUG"); /* Check if the current pc is expected. */ - vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pc), &pc); + pc = vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pc)); TEST_ASSERT(!test_pc || pc == test_pc, "Unexpected pc 0x%lx (expected 0x%lx)", pc, test_pc); @@ -583,7 +583,7 @@ int main(int argc, char *argv[]) uint64_t aa64dfr0; vm = vm_create_with_one_vcpu(&vcpu, guest_code); - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64DFR0_EL1), &aa64dfr0); + aa64dfr0 = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64DFR0_EL1)); __TEST_REQUIRE(debug_version(aa64dfr0) >= 6, "Armv8 debug architecture not supported."); kvm_vm_free(vm); diff --git a/tools/testing/selftests/kvm/aarch64/hypercalls.c b/tools/testing/selftests/kvm/aarch64/hypercalls.c index 9d192ce0078d..ec54ec7726e9 100644 --- a/tools/testing/selftests/kvm/aarch64/hypercalls.c +++ b/tools/testing/selftests/kvm/aarch64/hypercalls.c @@ -173,7 +173,7 @@ static void test_fw_regs_before_vm_start(struct kvm_vcpu *vcpu) const struct kvm_fw_reg_info *reg_info = &fw_reg_info[i]; /* First 'read' should be an upper limit of the features supported */ - vcpu_get_reg(vcpu, reg_info->reg, &val); + val = vcpu_get_reg(vcpu, reg_info->reg); TEST_ASSERT(val == FW_REG_ULIMIT_VAL(reg_info->max_feat_bit), "Expected all the features to be set for reg: 0x%lx; expected: 0x%lx; read: 0x%lx", reg_info->reg, FW_REG_ULIMIT_VAL(reg_info->max_feat_bit), val); @@ -184,7 +184,7 @@ static void test_fw_regs_before_vm_start(struct kvm_vcpu *vcpu) "Failed to clear all the features of reg: 0x%lx; ret: %d", reg_info->reg, errno); - vcpu_get_reg(vcpu, reg_info->reg, &val); + val = vcpu_get_reg(vcpu, reg_info->reg); TEST_ASSERT(val == 0, "Expected all the features to be cleared for reg: 0x%lx", reg_info->reg); @@ -214,7 +214,7 @@ static void test_fw_regs_after_vm_start(struct kvm_vcpu *vcpu) * Before starting the VM, the test clears all the bits. * Check if that's still the case. */ - vcpu_get_reg(vcpu, reg_info->reg, &val); + val = vcpu_get_reg(vcpu, reg_info->reg); TEST_ASSERT(val == 0, "Expected all the features to be cleared for reg: 0x%lx", reg_info->reg); diff --git a/tools/testing/selftests/kvm/aarch64/no-vgic-v3.c b/tools/testing/selftests/kvm/aarch64/no-vgic-v3.c index 58304bbc2036..ebd70430c89d 100644 --- a/tools/testing/selftests/kvm/aarch64/no-vgic-v3.c +++ b/tools/testing/selftests/kvm/aarch64/no-vgic-v3.c @@ -164,7 +164,7 @@ int main(int argc, char *argv[]) uint64_t pfr0; vm = vm_create_with_one_vcpu(&vcpu, NULL); - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), &pfr0); + pfr0 = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1)); __TEST_REQUIRE(FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_GIC), pfr0), "GICv3 not supported."); kvm_vm_free(vm); diff --git a/tools/testing/selftests/kvm/aarch64/psci_test.c b/tools/testing/selftests/kvm/aarch64/psci_test.c index eaa7655fefc1..0ab7d5a24482 100644 --- a/tools/testing/selftests/kvm/aarch64/psci_test.c +++ b/tools/testing/selftests/kvm/aarch64/psci_test.c @@ -111,8 +111,8 @@ static void assert_vcpu_reset(struct kvm_vcpu *vcpu) { uint64_t obs_pc, obs_x0; - vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pc), &obs_pc); - vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.regs[0]), &obs_x0); + obs_pc = vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pc)); + obs_x0 = vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.regs[0])); TEST_ASSERT(obs_pc == CPU_ON_ENTRY_ADDR, "unexpected target cpu pc: %lx (expected: %lx)", @@ -152,7 +152,7 @@ static void host_test_cpu_on(void) */ vcpu_power_off(target); - vcpu_get_reg(target, KVM_ARM64_SYS_REG(SYS_MPIDR_EL1), &target_mpidr); + target_mpidr = vcpu_get_reg(target, KVM_ARM64_SYS_REG(SYS_MPIDR_EL1)); vcpu_args_set(source, 1, target_mpidr & MPIDR_HWID_BITMASK); enter_guest(source); diff --git a/tools/testing/selftests/kvm/aarch64/set_id_regs.c b/tools/testing/selftests/kvm/aarch64/set_id_regs.c index a79b7f18452d..25ba7d382196 100644 --- a/tools/testing/selftests/kvm/aarch64/set_id_regs.c +++ b/tools/testing/selftests/kvm/aarch64/set_id_regs.c @@ -346,7 +346,7 @@ static uint64_t test_reg_set_success(struct kvm_vcpu *vcpu, uint64_t reg, uint64_t mask = ftr_bits->mask; uint64_t val, new_val, ftr; - vcpu_get_reg(vcpu, reg, &val); + val = vcpu_get_reg(vcpu, reg); ftr = (val & mask) >> shift; ftr = get_safe_value(ftr_bits, ftr); @@ -356,7 +356,7 @@ static uint64_t test_reg_set_success(struct kvm_vcpu *vcpu, uint64_t reg, val |= ftr; vcpu_set_reg(vcpu, reg, val); - vcpu_get_reg(vcpu, reg, &new_val); + new_val = vcpu_get_reg(vcpu, reg); TEST_ASSERT_EQ(new_val, val); return new_val; @@ -370,7 +370,7 @@ static void test_reg_set_fail(struct kvm_vcpu *vcpu, uint64_t reg, uint64_t val, old_val, ftr; int r; - vcpu_get_reg(vcpu, reg, &val); + val = vcpu_get_reg(vcpu, reg); ftr = (val & mask) >> shift; ftr = get_invalid_value(ftr_bits, ftr); @@ -384,7 +384,7 @@ static void test_reg_set_fail(struct kvm_vcpu *vcpu, uint64_t reg, TEST_ASSERT(r < 0 && errno == EINVAL, "Unexpected KVM_SET_ONE_REG error: r=%d, errno=%d", r, errno); - vcpu_get_reg(vcpu, reg, &val); + val = vcpu_get_reg(vcpu, reg); TEST_ASSERT_EQ(val, old_val); } @@ -576,7 +576,7 @@ static void test_clidr(struct kvm_vcpu *vcpu) uint64_t clidr; int level; - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_CLIDR_EL1), &clidr); + clidr = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_CLIDR_EL1)); /* find the first empty level in the cache hierarchy */ for (level = 1; level < 7; level++) { @@ -601,7 +601,7 @@ static void test_ctr(struct kvm_vcpu *vcpu) { u64 ctr; - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_CTR_EL0), &ctr); + ctr = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_CTR_EL0)); ctr &= ~CTR_EL0_DIC_MASK; if (ctr & CTR_EL0_IminLine_MASK) ctr--; @@ -617,7 +617,7 @@ static void test_vcpu_ftr_id_regs(struct kvm_vcpu *vcpu) test_clidr(vcpu); test_ctr(vcpu); - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_MPIDR_EL1), &val); + val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_MPIDR_EL1)); val++; vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_MPIDR_EL1), val); @@ -630,7 +630,7 @@ static void test_assert_id_reg_unchanged(struct kvm_vcpu *vcpu, uint32_t encodin size_t idx = encoding_to_range_idx(encoding); uint64_t observed; - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(encoding), &observed); + observed = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(encoding)); TEST_ASSERT_EQ(test_reg_vals[idx], observed); } @@ -665,7 +665,7 @@ int main(void) vm = vm_create_with_one_vcpu(&vcpu, guest_code); /* Check for AARCH64 only system */ - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), &val); + val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1)); el0 = FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_EL0), val); aarch64_only = (el0 == ID_AA64PFR0_EL1_ELx_64BIT_ONLY); diff --git a/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c b/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c index f9c0c86d7e85..f16b3b27e32e 100644 --- a/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c +++ b/tools/testing/selftests/kvm/aarch64/vpmu_counter_access.c @@ -440,8 +440,7 @@ static void create_vpmu_vm(void *guest_code) "Failed to create vgic-v3, skipping"); /* Make sure that PMUv3 support is indicated in the ID register */ - vcpu_get_reg(vpmu_vm.vcpu, - KVM_ARM64_SYS_REG(SYS_ID_AA64DFR0_EL1), &dfr0); + dfr0 = vcpu_get_reg(vpmu_vm.vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64DFR0_EL1)); pmuver = FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_PMUVer), dfr0); TEST_ASSERT(pmuver != ID_AA64DFR0_EL1_PMUVer_IMP_DEF && pmuver >= ID_AA64DFR0_EL1_PMUVer_IMP, @@ -484,7 +483,7 @@ static void test_create_vpmu_vm_with_pmcr_n(uint64_t pmcr_n, bool expect_fail) create_vpmu_vm(guest_code); vcpu = vpmu_vm.vcpu; - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0), &pmcr_orig); + pmcr_orig = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0)); pmcr = pmcr_orig; /* @@ -493,7 +492,7 @@ static void test_create_vpmu_vm_with_pmcr_n(uint64_t pmcr_n, bool expect_fail) */ set_pmcr_n(&pmcr, pmcr_n); vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0), pmcr); - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0), &pmcr); + pmcr = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0)); if (expect_fail) TEST_ASSERT(pmcr_orig == pmcr, @@ -521,7 +520,7 @@ static void run_access_test(uint64_t pmcr_n) vcpu = vpmu_vm.vcpu; /* Save the initial sp to restore them later to run the guest again */ - vcpu_get_reg(vcpu, ARM64_CORE_REG(sp_el1), &sp); + sp = vcpu_get_reg(vcpu, ARM64_CORE_REG(sp_el1)); run_vcpu(vcpu, pmcr_n); @@ -572,12 +571,12 @@ static void run_pmregs_validity_test(uint64_t pmcr_n) * Test if the 'set' and 'clr' variants of the registers * are initialized based on the number of valid counters. */ - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(set_reg_id), ®_val); + reg_val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(set_reg_id)); TEST_ASSERT((reg_val & (~valid_counters_mask)) == 0, "Initial read of set_reg: 0x%llx has unimplemented counters enabled: 0x%lx", KVM_ARM64_SYS_REG(set_reg_id), reg_val); - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(clr_reg_id), ®_val); + reg_val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(clr_reg_id)); TEST_ASSERT((reg_val & (~valid_counters_mask)) == 0, "Initial read of clr_reg: 0x%llx has unimplemented counters enabled: 0x%lx", KVM_ARM64_SYS_REG(clr_reg_id), reg_val); @@ -589,12 +588,12 @@ static void run_pmregs_validity_test(uint64_t pmcr_n) */ vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(set_reg_id), max_counters_mask); - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(set_reg_id), ®_val); + reg_val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(set_reg_id)); TEST_ASSERT((reg_val & (~valid_counters_mask)) == 0, "Read of set_reg: 0x%llx has unimplemented counters enabled: 0x%lx", KVM_ARM64_SYS_REG(set_reg_id), reg_val); - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(clr_reg_id), ®_val); + reg_val = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(clr_reg_id)); TEST_ASSERT((reg_val & (~valid_counters_mask)) == 0, "Read of clr_reg: 0x%llx has unimplemented counters enabled: 0x%lx", KVM_ARM64_SYS_REG(clr_reg_id), reg_val); @@ -625,7 +624,7 @@ static uint64_t get_pmcr_n_limit(void) uint64_t pmcr; create_vpmu_vm(guest_code); - vcpu_get_reg(vpmu_vm.vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0), &pmcr); + pmcr = vcpu_get_reg(vpmu_vm.vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0)); destroy_vpmu_vm(); return get_pmcr_n(pmcr); } diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h index bc7c242480d6..287a3ec06df4 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -702,11 +702,13 @@ static inline int __vcpu_set_reg(struct kvm_vcpu *vcpu, uint64_t id, uint64_t va return __vcpu_ioctl(vcpu, KVM_SET_ONE_REG, ®); } -static inline void vcpu_get_reg(struct kvm_vcpu *vcpu, uint64_t id, void *addr) +static inline uint64_t vcpu_get_reg(struct kvm_vcpu *vcpu, uint64_t id) { - struct kvm_one_reg reg = { .id = id, .addr = (uint64_t)addr }; + uint64_t val; + struct kvm_one_reg reg = { .id = id, .addr = (uint64_t)&val }; vcpu_ioctl(vcpu, KVM_GET_ONE_REG, ®); + return val; } static inline void vcpu_set_reg(struct kvm_vcpu *vcpu, uint64_t id, uint64_t val) { diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c index 698e34f39241..7ba3aa3755f3 100644 --- a/tools/testing/selftests/kvm/lib/aarch64/processor.c +++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c @@ -281,8 +281,8 @@ void aarch64_vcpu_setup(struct kvm_vcpu *vcpu, struct kvm_vcpu_init *init) */ vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_CPACR_EL1), 3 << 20); - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_SCTLR_EL1), &sctlr_el1); - vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_TCR_EL1), &tcr_el1); + sctlr_el1 = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_SCTLR_EL1)); + tcr_el1 = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_TCR_EL1)); /* Configure base granule size */ switch (vm->mode) { @@ -360,8 +360,8 @@ void vcpu_arch_dump(FILE *stream, struct kvm_vcpu *vcpu, uint8_t indent) { uint64_t pstate, pc; - vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pstate), &pstate); - vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pc), &pc); + pstate = vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pstate)); + pc = vcpu_get_reg(vcpu, ARM64_CORE_REG(regs.pc)); fprintf(stream, "%*spstate: 0x%.16lx pc: 0x%.16lx\n", indent, "", pstate, pc); diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c index 6ae47b3d6b25..dd663bcf0cc0 100644 --- a/tools/testing/selftests/kvm/lib/riscv/processor.c +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c @@ -221,39 +221,39 @@ void vcpu_arch_dump(FILE *stream, struct kvm_vcpu *vcpu, uint8_t indent) { struct kvm_riscv_core core; - vcpu_get_reg(vcpu, RISCV_CORE_REG(mode), &core.mode); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.pc), &core.regs.pc); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.ra), &core.regs.ra); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.sp), &core.regs.sp); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.gp), &core.regs.gp); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.tp), &core.regs.tp); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t0), &core.regs.t0); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t1), &core.regs.t1); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t2), &core.regs.t2); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s0), &core.regs.s0); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s1), &core.regs.s1); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a0), &core.regs.a0); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a1), &core.regs.a1); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a2), &core.regs.a2); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a3), &core.regs.a3); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a4), &core.regs.a4); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a5), &core.regs.a5); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a6), &core.regs.a6); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a7), &core.regs.a7); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s2), &core.regs.s2); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s3), &core.regs.s3); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s4), &core.regs.s4); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s5), &core.regs.s5); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s6), &core.regs.s6); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s7), &core.regs.s7); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s8), &core.regs.s8); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s9), &core.regs.s9); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s10), &core.regs.s10); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s11), &core.regs.s11); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t3), &core.regs.t3); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t4), &core.regs.t4); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t5), &core.regs.t5); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t6), &core.regs.t6); + core.mode = vcpu_get_reg(vcpu, RISCV_CORE_REG(mode)); + core.regs.pc = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.pc)); + core.regs.ra = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.ra)); + core.regs.sp = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.sp)); + core.regs.gp = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.gp)); + core.regs.tp = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.tp)); + core.regs.t0 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t0)); + core.regs.t1 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t1)); + core.regs.t2 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t2)); + core.regs.s0 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s0)); + core.regs.s1 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s1)); + core.regs.a0 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a0)); + core.regs.a1 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a1)); + core.regs.a2 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a2)); + core.regs.a3 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a3)); + core.regs.a4 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a4)); + core.regs.a5 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a5)); + core.regs.a6 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a6)); + core.regs.a7 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.a7)); + core.regs.s2 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s2)); + core.regs.s3 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s3)); + core.regs.s4 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s4)); + core.regs.s5 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s5)); + core.regs.s6 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s6)); + core.regs.s7 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s7)); + core.regs.s8 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s8)); + core.regs.s9 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s9)); + core.regs.s10 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s10)); + core.regs.s11 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.s11)); + core.regs.t3 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t3)); + core.regs.t4 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t4)); + core.regs.t5 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t5)); + core.regs.t6 = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.t6)); fprintf(stream, " MODE: 0x%lx\n", core.mode); diff --git a/tools/testing/selftests/kvm/riscv/arch_timer.c b/tools/testing/selftests/kvm/riscv/arch_timer.c index 2c792228ac0b..9e370800a6a2 100644 --- a/tools/testing/selftests/kvm/riscv/arch_timer.c +++ b/tools/testing/selftests/kvm/riscv/arch_timer.c @@ -93,7 +93,7 @@ struct kvm_vm *test_vm_create(void) vcpu_init_vector_tables(vcpus[i]); /* Initialize guest timer frequency. */ - vcpu_get_reg(vcpus[0], RISCV_TIMER_REG(frequency), &timer_freq); + timer_freq = vcpu_get_reg(vcpus[0], RISCV_TIMER_REG(frequency)); sync_global_to_guest(vm, timer_freq); pr_debug("timer_freq: %lu\n", timer_freq); diff --git a/tools/testing/selftests/kvm/riscv/ebreak_test.c b/tools/testing/selftests/kvm/riscv/ebreak_test.c index 0e0712854953..cfed6c727bfc 100644 --- a/tools/testing/selftests/kvm/riscv/ebreak_test.c +++ b/tools/testing/selftests/kvm/riscv/ebreak_test.c @@ -60,7 +60,7 @@ int main(void) TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_DEBUG); - vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.pc), &pc); + pc = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.pc)); TEST_ASSERT_EQ(pc, LABEL_ADDRESS(sw_bp_1)); /* skip sw_bp_1 */ diff --git a/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c b/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c index f299cbfd23ca..f45c0ecc902d 100644 --- a/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c +++ b/tools/testing/selftests/kvm/riscv/sbi_pmu_test.c @@ -608,7 +608,7 @@ static void test_vm_events_overflow(void *guest_code) vcpu_init_vector_tables(vcpu); /* Initialize guest timer frequency. */ - vcpu_get_reg(vcpu, RISCV_TIMER_REG(frequency), &timer_freq); + timer_freq = vcpu_get_reg(vcpu, RISCV_TIMER_REG(frequency)); sync_global_to_guest(vm, timer_freq); run_vcpu(vcpu); diff --git a/tools/testing/selftests/kvm/s390x/resets.c b/tools/testing/selftests/kvm/s390x/resets.c index 357943f2bea8..b58f75b381e5 100644 --- a/tools/testing/selftests/kvm/s390x/resets.c +++ b/tools/testing/selftests/kvm/s390x/resets.c @@ -61,7 +61,7 @@ static void test_one_reg(struct kvm_vcpu *vcpu, uint64_t id, uint64_t value) { uint64_t eval_reg; - vcpu_get_reg(vcpu, id, &eval_reg); + eval_reg = vcpu_get_reg(vcpu, id); TEST_ASSERT(eval_reg == value, "value == 0x%lx", value); } diff --git a/tools/testing/selftests/kvm/steal_time.c b/tools/testing/selftests/kvm/steal_time.c index a8d3afa0b86b..cce2520af720 100644 --- a/tools/testing/selftests/kvm/steal_time.c +++ b/tools/testing/selftests/kvm/steal_time.c @@ -269,9 +269,8 @@ static void guest_code(int cpu) static bool is_steal_time_supported(struct kvm_vcpu *vcpu) { uint64_t id = RISCV_SBI_EXT_REG(KVM_RISCV_SBI_EXT_STA); - unsigned long enabled; + unsigned long enabled = vcpu_get_reg(vcpu, id); - vcpu_get_reg(vcpu, id, &enabled); TEST_ASSERT(enabled == 0 || enabled == 1, "Expected boolean result"); return enabled;