diff options
| -rw-r--r-- | target-s390x/kvm.c | 143 | ||||
| -rw-r--r-- | trace-events | 4 |
2 files changed, 69 insertions, 78 deletions
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index 2b2dcdc485..daaabbd674 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -36,6 +36,7 @@ #include "sysemu/device_tree.h" #include "qapi/qmp/qjson.h" #include "monitor/monitor.h" +#include "trace.h" /* #define DEBUG_KVM */ @@ -128,14 +129,42 @@ void kvm_arch_reset_vcpu(CPUState *cpu) } } +static int kvm_set_one_reg(CPUState *cs, uint64_t id, void *source) +{ + struct kvm_one_reg reg; + int r; + + reg.id = id; + reg.addr = (uint64_t) source; + r = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); + if (r) { + trace_kvm_failed_reg_set(id, strerror(errno)); + } + return r; +} + +static int kvm_get_one_reg(CPUState *cs, uint64_t id, void *target) +{ + struct kvm_one_reg reg; + int r; + + reg.id = id; + reg.addr = (uint64_t) target; + r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); + if (r) { + trace_kvm_failed_reg_get(id, strerror(errno)); + } + return r; +} + + int kvm_arch_put_registers(CPUState *cs, int level) { S390CPU *cpu = S390_CPU(cs); CPUS390XState *env = &cpu->env; - struct kvm_one_reg reg; struct kvm_sregs sregs; struct kvm_regs regs; - int ret; + int r; int i; /* always save the PSW and the GPRS*/ @@ -151,9 +180,9 @@ int kvm_arch_put_registers(CPUState *cs, int level) for (i = 0; i < 16; i++) { regs.gprs[i] = env->regs[i]; } - ret = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s); - if (ret < 0) { - return ret; + r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s); + if (r < 0) { + return r; } } @@ -162,47 +191,27 @@ int kvm_arch_put_registers(CPUState *cs, int level) return 0; } - reg.id = KVM_REG_S390_CPU_TIMER; - reg.addr = (__u64)&(env->cputm); - ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); - if (ret < 0) { - return ret; - } - - reg.id = KVM_REG_S390_CLOCK_COMP; - reg.addr = (__u64)&(env->ckc); - ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); - if (ret < 0) { - return ret; - } - - reg.id = KVM_REG_S390_TODPR; - reg.addr = (__u64)&(env->todpr); - ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); - if (ret < 0) { - return ret; - } + /* + * These ONE_REGS are not protected by a capability. As they are only + * necessary for migration we just trace a possible error, but don't + * return with an error return code. + */ + kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm); + kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc); + kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr); if (cap_async_pf) { - reg.id = KVM_REG_S390_PFTOKEN; - reg.addr = (__u64)&(env->pfault_token); - ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); - if (ret < 0) { - return ret; + r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token); + if (r < 0) { + return r; } - - reg.id = KVM_REG_S390_PFCOMPARE; - reg.addr = (__u64)&(env->pfault_compare); - ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); - if (ret < 0) { - return ret; + r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare); + if (r < 0) { + return r; } - - reg.id = KVM_REG_S390_PFSELECT; - reg.addr = (__u64)&(env->pfault_select); - ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); - if (ret < 0) { - return ret; + r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select); + if (r < 0) { + return r; } } @@ -220,9 +229,9 @@ int kvm_arch_put_registers(CPUState *cs, int level) sregs.acrs[i] = env->aregs[i]; sregs.crs[i] = env->cregs[i]; } - ret = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs); - if (ret < 0) { - return ret; + r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs); + if (r < 0) { + return r; } } @@ -240,7 +249,6 @@ int kvm_arch_get_registers(CPUState *cs) { S390CPU *cpu = S390_CPU(cs); CPUS390XState *env = &cpu->env; - struct kvm_one_reg reg; struct kvm_sregs sregs; struct kvm_regs regs; int i, r; @@ -288,46 +296,25 @@ int kvm_arch_get_registers(CPUState *cs) env->psa = cs->kvm_run->s.regs.prefix; } - /* One Regs */ - reg.id = KVM_REG_S390_CPU_TIMER; - reg.addr = (__u64)&(env->cputm); - r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); - if (r < 0) { - return r; - } - - reg.id = KVM_REG_S390_CLOCK_COMP; - reg.addr = (__u64)&(env->ckc); - r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); - if (r < 0) { - return r; - } - - reg.id = KVM_REG_S390_TODPR; - reg.addr = (__u64)&(env->todpr); - r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); - if (r < 0) { - return r; - } + /* + * These ONE_REGS are not protected by a capability. As they are only + * necessary for migration we just trace a possible error, but don't + * return with an error return code. + */ + kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm); + kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc); + kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr); if (cap_async_pf) { - reg.id = KVM_REG_S390_PFTOKEN; - reg.addr = (__u64)&(env->pfault_token); - r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); + r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token); if (r < 0) { return r; } - - reg.id = KVM_REG_S390_PFCOMPARE; - reg.addr = (__u64)&(env->pfault_compare); - r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); + r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare); if (r < 0) { return r; } - - reg.id = KVM_REG_S390_PFSELECT; - reg.addr = (__u64)&(env->pfault_select); - r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); + r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select); if (r < 0) { return r; } diff --git a/trace-events b/trace-events index 6ecaab2f27..a5218ba393 100644 --- a/trace-events +++ b/trace-events @@ -1243,3 +1243,7 @@ xen_pv_mmio_write(uint64_t addr) "WARNING: write to Xen PV Device MMIO space (ad # hw/pci/pci_host.c pci_cfg_read(const char *dev, unsigned devid, unsigned fnid, unsigned offs, unsigned val) "%s %02u:%u @0x%x -> 0x%x" pci_cfg_write(const char *dev, unsigned devid, unsigned fnid, unsigned offs, unsigned val) "%s %02u:%u @0x%x <- 0x%x" + +# target-s390/kvm.c +kvm_failed_reg_get(uint64_t id, const char *msg) "Warning: Unable to retrieve ONEREG %" PRIu64 " from KVM: %s" +kvm_failed_reg_set(uint64_t id, const char *msg) "Warning: Unable to set ONEREG %" PRIu64 " to KVM: %s" |