diff options
Diffstat (limited to 'hw/ppc/spapr_hcall.c')
| -rw-r--r-- | hw/ppc/spapr_hcall.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index 7cf0993..8b3c0e1 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -1441,7 +1441,8 @@ static target_ulong h_signal_sys_reset(PowerPCCPU *cpu, } static uint32_t cas_check_pvr(sPAPRMachineState *spapr, PowerPCCPU *cpu, - target_ulong *addr, Error **errp) + target_ulong *addr, bool *raw_mode_supported, + Error **errp) { bool explicit_match = false; /* Matched the CPU's real PVR */ uint32_t max_compat = spapr->max_compat_pvr; @@ -1481,6 +1482,8 @@ static uint32_t cas_check_pvr(sPAPRMachineState *spapr, PowerPCCPU *cpu, return 0; } + *raw_mode_supported = explicit_match; + /* Parsing finished */ trace_spapr_cas_pvr(cpu->compat_pvr, explicit_match, best_compat); @@ -1499,8 +1502,9 @@ static target_ulong h_client_architecture_support(PowerPCCPU *cpu, sPAPROptionVector *ov1_guest, *ov5_guest, *ov5_cas_old, *ov5_updates; bool guest_radix; Error *local_err = NULL; + bool raw_mode_supported = false; - cas_pvr = cas_check_pvr(spapr, cpu, &addr, &local_err); + cas_pvr = cas_check_pvr(spapr, cpu, &addr, &raw_mode_supported, &local_err); if (local_err) { error_report_err(local_err); return H_HARDWARE; @@ -1510,8 +1514,14 @@ static target_ulong h_client_architecture_support(PowerPCCPU *cpu, if (cpu->compat_pvr != cas_pvr) { ppc_set_compat_all(cas_pvr, &local_err); if (local_err) { - error_report_err(local_err); - return H_HARDWARE; + /* We fail to set compat mode (likely because running with KVM PR), + * but maybe we can fallback to raw mode if the guest supports it. + */ + if (!raw_mode_supported) { + error_report_err(local_err); + return H_HARDWARE; + } + local_err = NULL; } } |