[RFC,v4,4/9] target/loongarch: Implement kvm get/set registers

Message ID	f4399db694265f34dbe9aafd024c56470e8a0f54.1696841645.git.lixianglai@loongson.cn
State	New
Headers	show Return-Path: <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org> From: xianglai li <lixianglai@loongson.cn> To: qemu-devel@nongnu.org, kvm@vger.kernel.org Cc: Tianrui Zhao <zhaotianrui@loongson.cn>, "Michael S. Tsirkin" <mst@redhat.com>, Cornelia Huck <cohuck@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, =?utf-8?q?Marc-Andr=C3=A9_Lureau?= <marcandre.lureau@redhat.com>, =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= <berrange@redhat.com>, Thomas Huth <thuth@redhat.com>, =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= <philmd@linaro.org>, Richard Henderson <richard.henderson@linaro.org>, Peter Maydell <peter.maydell@linaro.org>, Bibo Mao <maobibo@loongson.cn>, Song Gao <gaosong@loongson.cn>, Xiaojuan Yang <yangxiaojuan@loongson.cn> Subject: [PATCH RFC v4 4/9] target/loongarch: Implement kvm get/set registers Date: Mon, 9 Oct 2023 17:01:32 +0800 Message-Id: <f4399db694265f34dbe9aafd024c56470e8a0f54.1696841645.git.lixianglai@loongson.cn> In-Reply-To: <cover.1696841645.git.lixianglai@loongson.cn> References: <cover.1696841645.git.lixianglai@loongson.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=114.242.206.163; envelope-from=lixianglai@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action Precedence: list Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org
Series	Add loongarch kvm accel support \| expand [RFC,v4,0/9] Add loongarch kvm accel support [RFC,v4,1/9] linux-headers: Add KVM headers for loongarch [RFC,v4,2/9] target/loongarch: Define some kvm_arch interfaces [RFC,v4,3/9] target/loongarch: Supplement vcpu env initial when vcpu reset [RFC,v4,4/9] target/loongarch: Implement kvm get/set registers [RFC,v4,5/9] target/loongarch: Implement kvm_arch_init function [RFC,v4,6/9] target/loongarch: Implement kvm_arch_init_vcpu [RFC,v4,7/9] target/loongarch: Implement kvm_arch_handle_exit [RFC,v4,8/9] target/loongarch: Implement set vcpu intr for kvm [RFC,v4,9/9] target/loongarch: Add loongarch kvm into meson build

diff --git a/meson.build b/meson.build index 3bb64b536c..1c71ead833 100644 --- a/meson.build +++ b/meson.build @@ -3305,6 +3305,7 @@ if have_system or have_user 'target/hppa', 'target/i386', 'target/i386/kvm', + 'target/loongarch', 'target/mips/tcg', 'target/nios2', 'target/ppc', diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c index 0d763d8a65..61344c7ad2 100644 --- a/target/loongarch/cpu.c +++ b/target/loongarch/cpu.c @@ -546,6 +546,9 @@ static void loongarch_cpu_reset_hold(Object *obj) #ifndef CONFIG_USER_ONLY env->pc = 0x1c000000; memset(env->tlb, 0, sizeof(env->tlb)); + if (kvm_enabled()) { + kvm_arch_reset_vcpu(env); + } #endif restore_fp_status(env); diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h index e6a99c83ab..2580dc26e1 100644 --- a/target/loongarch/cpu.h +++ b/target/loongarch/cpu.h @@ -359,6 +359,7 @@ typedef struct CPUArchState { MemoryRegion iocsr_mem; bool load_elf; uint64_t elf_address; + uint32_t mp_state; /* Store ipistate to access from this struct */ DeviceState *ipistate; #endif @@ -477,6 +478,7 @@ static inline void cpu_get_tb_cpu_state(CPULoongArchState *env, vaddr *pc, } void loongarch_cpu_list(void); +void kvm_arch_reset_vcpu(CPULoongArchState *env); #define cpu_list loongarch_cpu_list diff --git a/target/loongarch/kvm.c b/target/loongarch/kvm.c index 0d67322fd9..8fda80b107 100644 --- a/target/loongarch/kvm.c +++ b/target/loongarch/kvm.c @@ -26,19 +26,421 @@ #include "sysemu/runstate.h" #include "cpu-csr.h" #include "kvm_loongarch.h" +#include "trace.h" static bool cap_has_mp_state; const KVMCapabilityInfo kvm_arch_required_capabilities[] = { KVM_CAP_LAST_INFO }; +static int kvm_loongarch_get_regs_core(CPUState *cs) +{ + int ret = 0; + int i; + struct kvm_regs regs; + LoongArchCPU *cpu = LOONGARCH_CPU(cs); + CPULoongArchState *env = &cpu->env; + + /* Get the current register set as KVM seems it */ + ret = kvm_vcpu_ioctl(cs, KVM_GET_REGS, &regs); + if (ret < 0) { + trace_kvm_failed_get_regs_core(strerror(errno)); + return ret; + } + /* gpr[0] value is always 0 */ + env->gpr[0] = 0; + for (i = 1; i < 32; i++) { + env->gpr[i] = regs.gpr[i]; + } + + env->pc = regs.pc; + return ret; +} + +static int kvm_loongarch_put_regs_core(CPUState *cs) +{ + int ret = 0; + int i; + struct kvm_regs regs; + LoongArchCPU *cpu = LOONGARCH_CPU(cs); + CPULoongArchState *env = &cpu->env; + + /* Set the registers based on QEMU's view of things */ + for (i = 0; i < 32; i++) { + regs.gpr[i] = env->gpr[i]; + } + + regs.pc = env->pc; + ret = kvm_vcpu_ioctl(cs, KVM_SET_REGS, &regs); + if (ret < 0) { + trace_kvm_failed_put_regs_core(strerror(errno)); + } + + return ret; +} + +static int kvm_larch_getq(CPUState *cs, uint64_t reg_id, + uint64_t *addr) +{ + struct kvm_one_reg csrreg = { + .id = reg_id, + .addr = (uintptr_t)addr + }; + + return kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &csrreg); +} + +static int kvm_larch_putq(CPUState *cs, uint64_t reg_id, + uint64_t *addr) +{ + struct kvm_one_reg csrreg = { + .id = reg_id, + .addr = (uintptr_t)addr + }; + + return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &csrreg); +} + +#define KVM_GET_ONE_UREG64(cs, ret, regidx, addr) \ + ({ \ + err = kvm_larch_getq(cs, KVM_IOC_CSRID(regidx), addr); \ + if (err < 0) { \ + ret = err; \ + trace_kvm_failed_get_csr(regidx, strerror(errno)); \ + } \ + }) + +#define KVM_PUT_ONE_UREG64(cs, ret, regidx, addr) \ + ({ \ + err = kvm_larch_putq(cs, KVM_IOC_CSRID(regidx), addr); \ + if (err < 0) { \ + ret = err; \ + trace_kvm_failed_put_csr(regidx, strerror(errno)); \ + } \ + }) + +static int kvm_loongarch_get_csr(CPUState *cs) +{ + int err, ret = 0; + LoongArchCPU *cpu = LOONGARCH_CPU(cs); + CPULoongArchState *env = &cpu->env; + + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_CRMD, &env->CSR_CRMD); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_PRMD, &env->CSR_PRMD); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_EUEN, &env->CSR_EUEN); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_MISC, &env->CSR_MISC); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_ECFG, &env->CSR_ECFG); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_ESTAT, &env->CSR_ESTAT); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_ERA, &env->CSR_ERA); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_BADV, &env->CSR_BADV); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_BADI, &env->CSR_BADI); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_EENTRY, &env->CSR_EENTRY); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBIDX, &env->CSR_TLBIDX); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBEHI, &env->CSR_TLBEHI); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBELO0, &env->CSR_TLBELO0); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBELO1, &env->CSR_TLBELO1); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_ASID, &env->CSR_ASID); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_PGDL, &env->CSR_PGDL); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_PGDH, &env->CSR_PGDH); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_PGD, &env->CSR_PGD); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_PWCL, &env->CSR_PWCL); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_PWCH, &env->CSR_PWCH); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_STLBPS, &env->CSR_STLBPS); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_RVACFG, &env->CSR_RVACFG); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_CPUID, &env->CSR_CPUID); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_PRCFG1, &env->CSR_PRCFG1); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_PRCFG2, &env->CSR_PRCFG2); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_PRCFG3, &env->CSR_PRCFG3); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(0), &env->CSR_SAVE[0]); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(1), &env->CSR_SAVE[1]); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(2), &env->CSR_SAVE[2]); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(3), &env->CSR_SAVE[3]); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(4), &env->CSR_SAVE[4]); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(5), &env->CSR_SAVE[5]); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(6), &env->CSR_SAVE[6]); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(7), &env->CSR_SAVE[7]); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TID, &env->CSR_TID); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_CNTC, &env->CSR_CNTC); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TICLR, &env->CSR_TICLR); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_LLBCTL, &env->CSR_LLBCTL); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_IMPCTL1, &env->CSR_IMPCTL1); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_IMPCTL2, &env->CSR_IMPCTL2); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRENTRY, &env->CSR_TLBRENTRY); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRBADV, &env->CSR_TLBRBADV); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRERA, &env->CSR_TLBRERA); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRSAVE, &env->CSR_TLBRSAVE); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRELO0, &env->CSR_TLBRELO0); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRELO1, &env->CSR_TLBRELO1); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBREHI, &env->CSR_TLBREHI); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRPRMD, &env->CSR_TLBRPRMD); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_DMW(0), &env->CSR_DMW[0]); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_DMW(1), &env->CSR_DMW[1]); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_DMW(2), &env->CSR_DMW[2]); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_DMW(3), &env->CSR_DMW[3]); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TVAL, &env->CSR_TVAL); + KVM_GET_ONE_UREG64(cs, ret, LOONGARCH_CSR_TCFG, &env->CSR_TCFG); + + return ret; +} + +static int kvm_loongarch_put_csr(CPUState *cs) +{ + int err, ret = 0; + LoongArchCPU *cpu = LOONGARCH_CPU(cs); + CPULoongArchState *env = &cpu->env; + + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_CRMD, &env->CSR_CRMD); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_PRMD, &env->CSR_PRMD); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_EUEN, &env->CSR_EUEN); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_MISC, &env->CSR_MISC); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_ECFG, &env->CSR_ECFG); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_ESTAT, &env->CSR_ESTAT); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_ERA, &env->CSR_ERA); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_BADV, &env->CSR_BADV); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_BADI, &env->CSR_BADI); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_EENTRY, &env->CSR_EENTRY); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBIDX, &env->CSR_TLBIDX); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBEHI, &env->CSR_TLBEHI); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBELO0, &env->CSR_TLBELO0); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBELO1, &env->CSR_TLBELO1); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_ASID, &env->CSR_ASID); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_PGDL, &env->CSR_PGDL); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_PGDH, &env->CSR_PGDH); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_PGD, &env->CSR_PGD); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_PWCL, &env->CSR_PWCL); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_PWCH, &env->CSR_PWCH); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_STLBPS, &env->CSR_STLBPS); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_RVACFG, &env->CSR_RVACFG); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_CPUID, &env->CSR_CPUID); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_PRCFG1, &env->CSR_PRCFG1); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_PRCFG2, &env->CSR_PRCFG2); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_PRCFG3, &env->CSR_PRCFG3); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(0), &env->CSR_SAVE[0]); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(1), &env->CSR_SAVE[1]); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(2), &env->CSR_SAVE[2]); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(3), &env->CSR_SAVE[3]); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(4), &env->CSR_SAVE[4]); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(5), &env->CSR_SAVE[5]); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(6), &env->CSR_SAVE[6]); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_SAVE(7), &env->CSR_SAVE[7]); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TID, &env->CSR_TID); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_CNTC, &env->CSR_CNTC); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TICLR, &env->CSR_TICLR); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_LLBCTL, &env->CSR_LLBCTL); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_IMPCTL1, &env->CSR_IMPCTL1); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_IMPCTL2, &env->CSR_IMPCTL2); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRENTRY, &env->CSR_TLBRENTRY); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRBADV, &env->CSR_TLBRBADV); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRERA, &env->CSR_TLBRERA); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRSAVE, &env->CSR_TLBRSAVE); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRELO0, &env->CSR_TLBRELO0); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRELO1, &env->CSR_TLBRELO1); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBREHI, &env->CSR_TLBREHI); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TLBRPRMD, &env->CSR_TLBRPRMD); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_DMW(0), &env->CSR_DMW[0]); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_DMW(1), &env->CSR_DMW[1]); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_DMW(2), &env->CSR_DMW[2]); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_DMW(3), &env->CSR_DMW[3]); + /* + * timer cfg must be put at last since it is used to enable + * guest timer + */ + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TVAL, &env->CSR_TVAL); + KVM_PUT_ONE_UREG64(cs, ret, LOONGARCH_CSR_TCFG, &env->CSR_TCFG); + return ret; +} + +static int kvm_loongarch_get_regs_fp(CPUState *cs) +{ + int ret, i; + struct kvm_fpu fpu; + + LoongArchCPU *cpu = LOONGARCH_CPU(cs); + CPULoongArchState *env = &cpu->env; + + ret = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu); + if (ret < 0) { + trace_kvm_failed_get_fpu(strerror(errno)); + return ret; + } + + env->fcsr0 = fpu.fcsr; + for (i = 0; i < 32; i++) { + env->fpr[i].vreg.UD[0] = fpu.fpr[i].val64[0]; + } + for (i = 0; i < 8; i++) { + env->cf[i] = fpu.fcc & 0xFF; + fpu.fcc = fpu.fcc >> 8; + } + + return ret; +} + +static int kvm_loongarch_put_regs_fp(CPUState *cs) +{ + int ret, i; + struct kvm_fpu fpu; + + LoongArchCPU *cpu = LOONGARCH_CPU(cs); + CPULoongArchState *env = &cpu->env; + + fpu.fcsr = env->fcsr0; + fpu.fcc = 0; + for (i = 0; i < 32; i++) { + fpu.fpr[i].val64[0] = env->fpr[i].vreg.UD[0]; + } + + for (i = 0; i < 8; i++) { + fpu.fcc |= env->cf[i] << (8 * i); + } + + ret = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu); + if (ret < 0) { + trace_kvm_failed_put_fpu(strerror(errno)); + } + + return ret; +} + +void kvm_arch_reset_vcpu(CPULoongArchState *env) +{ + env->mp_state = KVM_MP_STATE_RUNNABLE; +} + +static int kvm_loongarch_get_mpstate(CPUState *cs) +{ + int ret = 0; + struct kvm_mp_state mp_state; + LoongArchCPU *cpu = LOONGARCH_CPU(cs); + CPULoongArchState *env = &cpu->env; + + if (cap_has_mp_state) { + ret = kvm_vcpu_ioctl(cs, KVM_GET_MP_STATE, &mp_state); + if (ret) { + trace_kvm_failed_get_mpstate(strerror(errno)); + return ret; + } + env->mp_state = mp_state.mp_state; + } + + return ret; +} + +static int kvm_loongarch_put_mpstate(CPUState *cs) +{ + int ret = 0; + + LoongArchCPU *cpu = LOONGARCH_CPU(cs); + CPULoongArchState *env = &cpu->env; + + struct kvm_mp_state mp_state = { + .mp_state = env->mp_state + }; + + if (cap_has_mp_state) { + ret = kvm_vcpu_ioctl(cs, KVM_SET_MP_STATE, &mp_state); + if (ret) { + trace_kvm_failed_put_mpstate(strerror(errno)); + } + } + + return ret; +} + +static int kvm_loongarch_get_cpucfg(CPUState *cs) +{ + int i, ret = 0; + uint64_t val; + LoongArchCPU *cpu = LOONGARCH_CPU(cs); + CPULoongArchState *env = &cpu->env; + + for (i = 0; i < 21; i++) { + ret = kvm_larch_getq(cs, KVM_IOC_CPUCFG(i), &val); + if (ret < 0) { + trace_kvm_failed_get_cpucfg(strerror(errno)); + } + env->cpucfg[i] = (uint32_t)val; + } + return ret; +} + +static int kvm_loongarch_put_cpucfg(CPUState *cs) +{ + int i, ret = 0; + LoongArchCPU *cpu = LOONGARCH_CPU(cs); + CPULoongArchState *env = &cpu->env; + uint64_t val; + + for (i = 0; i < 21; i++) { + val = env->cpucfg[i]; + /* LSX and LASX and LBT are not supported in kvm now */ + if (i == 2) { + val &= ~(BIT(R_CPUCFG2_LSX_SHIFT) | BIT(R_CPUCFG2_LASX_SHIFT)); + val &= ~(BIT(R_CPUCFG2_LBT_X86_SHIFT) | BIT(R_CPUCFG2_LBT_ARM_SHIFT) | + BIT(R_CPUCFG2_LBT_MIPS_SHIFT)); + } + ret = kvm_larch_putq(cs, KVM_IOC_CPUCFG(i), &val); + if (ret < 0) { + trace_kvm_failed_put_cpucfg(strerror(errno)); + } + } + return ret; +} + int kvm_arch_get_registers(CPUState *cs) { - return 0; + int ret; + + ret = kvm_loongarch_get_regs_core(cs); + if (ret) { + return ret; + } + + ret = kvm_loongarch_get_csr(cs); + if (ret) { + return ret; + } + + ret = kvm_loongarch_get_regs_fp(cs); + if (ret) { + return ret; + } + + ret = kvm_loongarch_get_mpstate(cs); + if (ret) { + return ret; + } + + ret = kvm_loongarch_get_cpucfg(cs); + return ret; } + int kvm_arch_put_registers(CPUState *cs, int level) { - return 0; + int ret; + + ret = kvm_loongarch_put_regs_core(cs); + if (ret) { + return ret; + } + + ret = kvm_loongarch_put_csr(cs); + if (ret) { + return ret; + } + + ret = kvm_loongarch_put_regs_fp(cs); + if (ret) { + return ret; + } + + ret = kvm_loongarch_put_mpstate(cs); + if (ret) { + return ret; + } + + ret = kvm_loongarch_put_cpucfg(cs); + return ret; } int kvm_arch_init_vcpu(CPUState *cs) diff --git a/target/loongarch/trace-events b/target/loongarch/trace-events new file mode 100644 index 0000000000..ceba80121b --- /dev/null +++ b/target/loongarch/trace-events @@ -0,0 +1,13 @@ +# See docs/devel/tracing.rst for syntax documentation. + +#kvm.c +kvm_failed_get_regs_core(const char *msg) "Failed to get core regs from KVM: %s" +kvm_failed_put_regs_core(const char *msg) "Failed to put core regs into KVM: %s" +kvm_failed_get_csr(int csr, const char *msg) "Failed to get csr 0x%x from KVM: %s" +kvm_failed_put_csr(int csr, const char *msg) "Failed to put csr 0x%x into KVM: %s" +kvm_failed_get_fpu(const char *msg) "Failed to get fpu from KVM: %s" +kvm_failed_put_fpu(const char *msg) "Failed to put fpu into KVM: %s" +kvm_failed_get_mpstate(const char *msg) "Failed to get mp_state from KVM: %s" +kvm_failed_put_mpstate(const char *msg) "Failed to put mp_state into KVM: %s" +kvm_failed_get_cpucfg(const char *msg) "Failed to get cpucfg from KVM: %s" +kvm_failed_put_cpucfg(const char *msg) "Failed to put cpucfg into KVM: %s" diff --git a/target/loongarch/trace.h b/target/loongarch/trace.h new file mode 100644 index 0000000000..c2ecb78f08 --- /dev/null +++ b/target/loongarch/trace.h @@ -0,0 +1 @@ +#include "trace/trace-target_loongarch.h"

[RFC,v4,4/9] target/loongarch: Implement kvm get/set registers

Commit Message

Comments

Patch