target/loongarch: Implement kvm get/set registers
Implement kvm_arch_get/set_registers interfaces, many regs
can be get/set in the function, such as core regs, csr regs,
fpu regs, mp state, etc.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: xianglai li <lixianglai@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Change-Id: Ia8fc48fe08b1768853f7729e77d37cdf270031e4
Message-Id: <20240105075804.1228596-5-zhaotianrui@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
diff --git a/meson.build b/meson.build
index 371edaf..b0dd87b 100644
--- a/meson.build
+++ b/meson.build
@@ -3329,6 +3329,7 @@
'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 9b768c9..0c157bb 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -540,6 +540,9 @@
#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 8022f44..a61c040 100644
--- a/target/loongarch/cpu.h
+++ b/target/loongarch/cpu.h
@@ -360,6 +360,7 @@
MemoryRegion iocsr_mem;
bool load_elf;
uint64_t elf_address;
+ uint32_t mp_state;
/* Store ipistate to access from this struct */
DeviceState *ipistate;
#endif
diff --git a/target/loongarch/internals.h b/target/loongarch/internals.h
index c492863..0beb034 100644
--- a/target/loongarch/internals.h
+++ b/target/loongarch/internals.h
@@ -31,8 +31,10 @@
const char *loongarch_exception_name(int32_t exception);
+#ifdef CONFIG_TCG
int ieee_ex_to_loongarch(int xcpt);
void restore_fp_status(CPULoongArchState *env);
+#endif
#ifndef CONFIG_USER_ONLY
extern const VMStateDescription vmstate_loongarch_cpu;
@@ -44,12 +46,13 @@
uint64_t cpu_loongarch_get_constant_timer_ticks(LoongArchCPU *cpu);
void cpu_loongarch_store_constant_timer_config(LoongArchCPU *cpu,
uint64_t value);
-
+#ifdef CONFIG_TCG
bool loongarch_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
MMUAccessType access_type, int mmu_idx,
bool probe, uintptr_t retaddr);
hwaddr loongarch_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
+#endif
#endif /* !CONFIG_USER_ONLY */
uint64_t read_fcc(CPULoongArchState *env);
diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c
index 0d67322..e7c9ef8 100644
--- a/target/loongarch/kvm/kvm.c
+++ b/target/loongarch/kvm/kvm.c
@@ -26,19 +26,595 @@
#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, ®s);
+ 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, ®s);
+ if (ret < 0) {
+ trace_kvm_failed_put_regs_core(strerror(errno));
+ }
+
+ return ret;
+}
+
+static int kvm_loongarch_get_csr(CPUState *cs)
+{
+ int ret = 0;
+ LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+ CPULoongArchState *env = &cpu->env;
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_CRMD),
+ &env->CSR_CRMD);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRMD),
+ &env->CSR_PRMD);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_EUEN),
+ &env->CSR_EUEN);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_MISC),
+ &env->CSR_MISC);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ECFG),
+ &env->CSR_ECFG);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ESTAT),
+ &env->CSR_ESTAT);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ERA),
+ &env->CSR_ERA);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_BADV),
+ &env->CSR_BADV);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_BADI),
+ &env->CSR_BADI);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_EENTRY),
+ &env->CSR_EENTRY);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBIDX),
+ &env->CSR_TLBIDX);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBEHI),
+ &env->CSR_TLBEHI);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBELO0),
+ &env->CSR_TLBELO0);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBELO1),
+ &env->CSR_TLBELO1);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ASID),
+ &env->CSR_ASID);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PGDL),
+ &env->CSR_PGDL);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PGDH),
+ &env->CSR_PGDH);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PGD),
+ &env->CSR_PGD);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PWCL),
+ &env->CSR_PWCL);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PWCH),
+ &env->CSR_PWCH);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_STLBPS),
+ &env->CSR_STLBPS);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_RVACFG),
+ &env->CSR_RVACFG);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_CPUID),
+ &env->CSR_CPUID);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRCFG1),
+ &env->CSR_PRCFG1);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRCFG2),
+ &env->CSR_PRCFG2);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRCFG3),
+ &env->CSR_PRCFG3);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(0)),
+ &env->CSR_SAVE[0]);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(1)),
+ &env->CSR_SAVE[1]);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(2)),
+ &env->CSR_SAVE[2]);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(3)),
+ &env->CSR_SAVE[3]);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(4)),
+ &env->CSR_SAVE[4]);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(5)),
+ &env->CSR_SAVE[5]);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(6)),
+ &env->CSR_SAVE[6]);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(7)),
+ &env->CSR_SAVE[7]);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TID),
+ &env->CSR_TID);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_CNTC),
+ &env->CSR_CNTC);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TICLR),
+ &env->CSR_TICLR);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_LLBCTL),
+ &env->CSR_LLBCTL);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_IMPCTL1),
+ &env->CSR_IMPCTL1);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_IMPCTL2),
+ &env->CSR_IMPCTL2);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRENTRY),
+ &env->CSR_TLBRENTRY);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRBADV),
+ &env->CSR_TLBRBADV);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRERA),
+ &env->CSR_TLBRERA);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRSAVE),
+ &env->CSR_TLBRSAVE);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRELO0),
+ &env->CSR_TLBRELO0);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRELO1),
+ &env->CSR_TLBRELO1);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBREHI),
+ &env->CSR_TLBREHI);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRPRMD),
+ &env->CSR_TLBRPRMD);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(0)),
+ &env->CSR_DMW[0]);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(1)),
+ &env->CSR_DMW[1]);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(2)),
+ &env->CSR_DMW[2]);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(3)),
+ &env->CSR_DMW[3]);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TVAL),
+ &env->CSR_TVAL);
+
+ ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TCFG),
+ &env->CSR_TCFG);
+
+ return ret;
+}
+
+static int kvm_loongarch_put_csr(CPUState *cs)
+{
+ int ret = 0;
+ LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+ CPULoongArchState *env = &cpu->env;
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_CRMD),
+ &env->CSR_CRMD);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRMD),
+ &env->CSR_PRMD);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_EUEN),
+ &env->CSR_EUEN);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_MISC),
+ &env->CSR_MISC);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ECFG),
+ &env->CSR_ECFG);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ESTAT),
+ &env->CSR_ESTAT);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ERA),
+ &env->CSR_ERA);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_BADV),
+ &env->CSR_BADV);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_BADI),
+ &env->CSR_BADI);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_EENTRY),
+ &env->CSR_EENTRY);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBIDX),
+ &env->CSR_TLBIDX);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBEHI),
+ &env->CSR_TLBEHI);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBELO0),
+ &env->CSR_TLBELO0);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBELO1),
+ &env->CSR_TLBELO1);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ASID),
+ &env->CSR_ASID);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PGDL),
+ &env->CSR_PGDL);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PGDH),
+ &env->CSR_PGDH);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PGD),
+ &env->CSR_PGD);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PWCL),
+ &env->CSR_PWCL);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PWCH),
+ &env->CSR_PWCH);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_STLBPS),
+ &env->CSR_STLBPS);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_RVACFG),
+ &env->CSR_RVACFG);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_CPUID),
+ &env->CSR_CPUID);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRCFG1),
+ &env->CSR_PRCFG1);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRCFG2),
+ &env->CSR_PRCFG2);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRCFG3),
+ &env->CSR_PRCFG3);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(0)),
+ &env->CSR_SAVE[0]);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(1)),
+ &env->CSR_SAVE[1]);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(2)),
+ &env->CSR_SAVE[2]);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(3)),
+ &env->CSR_SAVE[3]);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(4)),
+ &env->CSR_SAVE[4]);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(5)),
+ &env->CSR_SAVE[5]);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(6)),
+ &env->CSR_SAVE[6]);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(7)),
+ &env->CSR_SAVE[7]);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TID),
+ &env->CSR_TID);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_CNTC),
+ &env->CSR_CNTC);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TICLR),
+ &env->CSR_TICLR);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_LLBCTL),
+ &env->CSR_LLBCTL);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_IMPCTL1),
+ &env->CSR_IMPCTL1);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_IMPCTL2),
+ &env->CSR_IMPCTL2);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRENTRY),
+ &env->CSR_TLBRENTRY);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRBADV),
+ &env->CSR_TLBRBADV);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRERA),
+ &env->CSR_TLBRERA);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRSAVE),
+ &env->CSR_TLBRSAVE);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRELO0),
+ &env->CSR_TLBRELO0);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRELO1),
+ &env->CSR_TLBRELO1);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBREHI),
+ &env->CSR_TLBREHI);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRPRMD),
+ &env->CSR_TLBRPRMD);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(0)),
+ &env->CSR_DMW[0]);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(1)),
+ &env->CSR_DMW[1]);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(2)),
+ &env->CSR_DMW[2]);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(3)),
+ &env->CSR_DMW[3]);
+ /*
+ * timer cfg must be put at last since it is used to enable
+ * guest timer
+ */
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TVAL),
+ &env->CSR_TVAL);
+
+ ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(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_get_one_reg(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_set_one_reg(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 0000000..6827ab5
--- /dev/null
+++ b/target/loongarch/trace-events
@@ -0,0 +1,11 @@
+# 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_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 0000000..c2ecb78
--- /dev/null
+++ b/target/loongarch/trace.h
@@ -0,0 +1 @@
+#include "trace/trace-target_loongarch.h"
