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Tsirkin" , Eric Blake , Markus Armbruster , Peter Maydell , Marcelo Tosatti , Huacai Chen , Rick Edgecombe , Francesco Lavra , xiaoyao.li@intel.com, qemu-devel@nongnu.org, kvm@vger.kernel.org Subject: [PATCH v7 07/52] kvm: Introduce kvm_arch_pre_create_vcpu() Date: Fri, 24 Jan 2025 08:20:03 -0500 Message-Id: <20250124132048.3229049-8-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250124132048.3229049-1-xiaoyao.li@intel.com> References: <20250124132048.3229049-1-xiaoyao.li@intel.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Introduce kvm_arch_pre_create_vcpu(), to perform arch-dependent work prior to create any vcpu. This is for i386 TDX because it needs call TDX_INIT_VM before creating any vcpu. The specific implemnet of i386 will be added in the future patch. Signed-off-by: Xiaoyao Li Acked-by: Gerd Hoffmann --- Changes in v7: - Implement stub for all the ARCHes instead of defining it with weak attribute; (Philippe) Changes in v3: - pass @errp to kvm_arch_pre_create_vcpu(); (Per Daniel) --- accel/kvm/kvm-all.c | 5 +++++ include/system/kvm.h | 1 + target/arm/kvm.c | 5 +++++ target/i386/kvm/kvm.c | 5 +++++ target/loongarch/kvm/kvm.c | 5 +++++ target/mips/kvm.c | 5 +++++ target/ppc/kvm.c | 5 +++++ target/riscv/kvm/kvm-cpu.c | 5 +++++ target/s390x/kvm/kvm.c | 5 +++++ 9 files changed, 41 insertions(+) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index c65b790433cb..45867dbe0839 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -540,6 +540,11 @@ int kvm_init_vcpu(CPUState *cpu, Error **errp) trace_kvm_init_vcpu(cpu->cpu_index, kvm_arch_vcpu_id(cpu)); + ret = kvm_arch_pre_create_vcpu(cpu, errp); + if (ret < 0) { + goto err; + } + ret = kvm_create_vcpu(cpu); if (ret < 0) { error_setg_errno(errp, -ret, diff --git a/include/system/kvm.h b/include/system/kvm.h index ab17c09a551f..d7dfa25493a2 100644 --- a/include/system/kvm.h +++ b/include/system/kvm.h @@ -374,6 +374,7 @@ int kvm_arch_get_default_type(MachineState *ms); int kvm_arch_init(MachineState *ms, KVMState *s); +int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp); int kvm_arch_init_vcpu(CPUState *cpu); int kvm_arch_destroy_vcpu(CPUState *cpu); diff --git a/target/arm/kvm.c b/target/arm/kvm.c index da30bdbb2349..93f1a7245b3f 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -1874,6 +1874,11 @@ static int kvm_arm_sve_set_vls(ARMCPU *cpu) #define ARM_CPU_ID_MPIDR 3, 0, 0, 0, 5 +int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp) +{ + return 0; +} + int kvm_arch_init_vcpu(CPUState *cs) { int ret; diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index b4fa35405fe1..1a4dd19e24ab 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -2050,6 +2050,11 @@ full: abort(); } +int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp) +{ + return 0; +} + int kvm_arch_init_vcpu(CPUState *cs) { struct { diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c index a3f55155b030..91c3c67cdb72 100644 --- a/target/loongarch/kvm/kvm.c +++ b/target/loongarch/kvm/kvm.c @@ -973,6 +973,11 @@ static int kvm_cpu_check_pmu(CPUState *cs, Error **errp) return 0; } +int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp) +{ + return 0; +} + int kvm_arch_init_vcpu(CPUState *cs) { uint64_t val; diff --git a/target/mips/kvm.c b/target/mips/kvm.c index d67b7c1a8ecb..ec53acb51a1f 100644 --- a/target/mips/kvm.c +++ b/target/mips/kvm.c @@ -61,6 +61,11 @@ int kvm_arch_irqchip_create(KVMState *s) return 0; } +int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp) +{ + return 0; +} + int kvm_arch_init_vcpu(CPUState *cs) { CPUMIPSState *env = cpu_env(cs); diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c index 966c2c657234..758298d565d2 100644 --- a/target/ppc/kvm.c +++ b/target/ppc/kvm.c @@ -477,6 +477,11 @@ static void kvmppc_hw_debug_points_init(CPUPPCState *cenv) } } +int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp) +{ + return 0; +} + int kvm_arch_init_vcpu(CPUState *cs) { PowerPCCPU *cpu = POWERPC_CPU(cs); diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c index 23ce77935940..55be7542e726 100644 --- a/target/riscv/kvm/kvm-cpu.c +++ b/target/riscv/kvm/kvm-cpu.c @@ -1362,6 +1362,11 @@ static int kvm_vcpu_enable_sbi_dbcn(RISCVCPU *cpu, CPUState *cs) return kvm_set_one_reg(cs, kvm_sbi_dbcn.kvm_reg_id, ®); } +int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp) +{ + return 0; +} + int kvm_arch_init_vcpu(CPUState *cs) { int ret = 0; diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c index 4d56e653ddf6..1f592733f4e2 100644 --- a/target/s390x/kvm/kvm.c +++ b/target/s390x/kvm/kvm.c @@ -404,6 +404,11 @@ unsigned long kvm_arch_vcpu_id(CPUState *cpu) return cpu->cpu_index; } +int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp) +{ + return 0; +} + int kvm_arch_init_vcpu(CPUState *cs) { unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus;