diff mbox series

[2/3] spapr: Use error_append_hint() in spapr_caps.c

Message ID 159180945454.29090.15222636045973363294.stgit@bahia.lan
State New
Headers show
Series spapr: Improve error reporting in spapr_caps.c | expand

Commit Message

Greg Kurz June 10, 2020, 5:17 p.m. UTC
We have a dedicated error API for hints. Use it instead of embedding
the hint in the error message, as recommanded in the "qapi/error.h"
header file.

Since spapr_caps_apply() passes &error_fatal, all functions must
also call the ERRP_AUTO_PROPAGATE() macro for error_append_hint()
to be functional.

While here, add some missing braces around one line statements that
are part of the patch context. Also have cap_fwnmi_apply(), which
already uses error_append_hint() to call ERRP_AUTO_PROPAGATE() as
well.

Signed-off-by: Greg Kurz <groug@kaod.org>
---
 hw/ppc/spapr_caps.c |   93 +++++++++++++++++++++++++++++----------------------
 1 file changed, 52 insertions(+), 41 deletions(-)
diff mbox series

Patch

diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c
index efdc0dbbcfc0..0c3d3b64a508 100644
--- a/hw/ppc/spapr_caps.c
+++ b/hw/ppc/spapr_caps.c
@@ -189,24 +189,24 @@  static void spapr_cap_set_pagesize(Object *obj, Visitor *v, const char *name,
 
 static void cap_htm_apply(SpaprMachineState *spapr, uint8_t val, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     if (!val) {
         /* TODO: We don't support disabling htm yet */
         return;
     }
     if (tcg_enabled()) {
-        error_setg(errp,
-                   "No Transactional Memory support in TCG,"
-                   " try appending -machine cap-htm=off");
+        error_setg(errp, "No Transactional Memory support in TCG");
+        error_append_hint(errp, "Try appending -machine cap-htm=off\n");
     } else if (kvm_enabled() && !kvmppc_has_cap_htm()) {
         error_setg(errp,
-"KVM implementation does not support Transactional Memory,"
-                   " try appending -machine cap-htm=off"
-            );
+"KVM implementation does not support Transactional Memory");
+        error_append_hint(errp, "Try appending -machine cap-htm=off\n");
     }
 }
 
 static void cap_vsx_apply(SpaprMachineState *spapr, uint8_t val, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     PowerPCCPU *cpu = POWERPC_CPU(first_cpu);
     CPUPPCState *env = &cpu->env;
 
@@ -218,13 +218,14 @@  static void cap_vsx_apply(SpaprMachineState *spapr, uint8_t val, Error **errp)
      * rid of anything that doesn't do VMX */
     g_assert(env->insns_flags & PPC_ALTIVEC);
     if (!(env->insns_flags2 & PPC2_VSX)) {
-        error_setg(errp, "VSX support not available,"
-                   " try appending -machine cap-vsx=off");
+        error_setg(errp, "VSX support not available");
+        error_append_hint(errp, "Try appending -machine cap-vsx=off\n");
     }
 }
 
 static void cap_dfp_apply(SpaprMachineState *spapr, uint8_t val, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     PowerPCCPU *cpu = POWERPC_CPU(first_cpu);
     CPUPPCState *env = &cpu->env;
 
@@ -233,8 +234,8 @@  static void cap_dfp_apply(SpaprMachineState *spapr, uint8_t val, Error **errp)
         return;
     }
     if (!(env->insns_flags2 & PPC2_DFP)) {
-        error_setg(errp, "DFP support not available,"
-                   " try appending -machine cap-dfp=off");
+        error_setg(errp, "DFP support not available");
+        error_append_hint(errp, "Try appending -machine cap-dfp=off\n");
     }
 }
 
@@ -248,6 +249,7 @@  SpaprCapPossible cap_cfpc_possible = {
 static void cap_safe_cache_apply(SpaprMachineState *spapr, uint8_t val,
                                  Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     Error *local_err = NULL;
     uint8_t kvm_val =  kvmppc_get_cap_safe_cache();
 
@@ -258,13 +260,14 @@  static void cap_safe_cache_apply(SpaprMachineState *spapr, uint8_t val,
                    cap_cfpc_possible.vals[val]);
     } else if (kvm_enabled() && (val > kvm_val)) {
         error_setg(errp,
-                   "Requested safe cache capability level not supported by kvm,"
-                   " try appending -machine cap-cfpc=%s",
-                   cap_cfpc_possible.vals[kvm_val]);
+"Requested safe cache capability level not supported by KVM");
+        error_append_hint(errp, "Try appending -machine cap-cfpc=%s\n",
+                          cap_cfpc_possible.vals[kvm_val]);
     }
 
-    if (local_err != NULL)
+    if (local_err != NULL) {
         warn_report_err(local_err);
+    }
 }
 
 SpaprCapPossible cap_sbbc_possible = {
@@ -277,6 +280,7 @@  SpaprCapPossible cap_sbbc_possible = {
 static void cap_safe_bounds_check_apply(SpaprMachineState *spapr, uint8_t val,
                                         Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     Error *local_err = NULL;
     uint8_t kvm_val =  kvmppc_get_cap_safe_bounds_check();
 
@@ -287,13 +291,14 @@  static void cap_safe_bounds_check_apply(SpaprMachineState *spapr, uint8_t val,
                    cap_sbbc_possible.vals[val]);
     } else if (kvm_enabled() && (val > kvm_val)) {
         error_setg(errp,
-"Requested safe bounds check capability level not supported by kvm,"
-                   " try appending -machine cap-sbbc=%s",
-                   cap_sbbc_possible.vals[kvm_val]);
+"Requested safe bounds check capability level not supported by KVM");
+        error_append_hint(errp, "Try appending -machine cap-sbbc=%s\n",
+                          cap_sbbc_possible.vals[kvm_val]);
     }
 
-    if (local_err != NULL)
+    if (local_err != NULL) {
         warn_report_err(local_err);
+    }
 }
 
 SpaprCapPossible cap_ibs_possible = {
@@ -309,6 +314,7 @@  SpaprCapPossible cap_ibs_possible = {
 static void cap_safe_indirect_branch_apply(SpaprMachineState *spapr,
                                            uint8_t val, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     Error *local_err = NULL;
     uint8_t kvm_val = kvmppc_get_cap_safe_indirect_branch();
 
@@ -319,9 +325,9 @@  static void cap_safe_indirect_branch_apply(SpaprMachineState *spapr,
                    cap_ibs_possible.vals[val]);
     } else if (kvm_enabled() && (val > kvm_val)) {
         error_setg(errp,
-"Requested safe indirect branch capability level not supported by kvm,"
-                   " try appending -machine cap-ibs=%s",
-                   cap_ibs_possible.vals[kvm_val]);
+"Requested safe indirect branch capability level not supported by KVM");
+        error_append_hint(errp, "Try appending -machine cap-ibs=%s\n",
+                          cap_ibs_possible.vals[kvm_val]);
     }
 
     if (local_err != NULL) {
@@ -408,17 +414,17 @@  static void cap_nested_kvm_hv_apply(SpaprMachineState *spapr,
     }
 
     if (tcg_enabled()) {
-        error_setg(errp,
-                   "No Nested KVM-HV support in tcg,"
-                   " try appending -machine cap-nested-hv=off");
+        error_setg(errp, "No Nested KVM-HV support in TCG");
+        error_append_hint(errp, "Try appending -machine cap-nested-hv=off");
     } else if (kvm_enabled()) {
         if (!kvmppc_has_cap_nested_kvm_hv()) {
             error_setg(errp,
-"KVM implementation does not support Nested KVM-HV,"
-                       " try appending -machine cap-nested-hv=off");
+"KVM implementation does not support Nested KVM-HV");
+            error_append_hint(errp, "Try appending -machine cap-nested-hv=off");
         } else if (kvmppc_set_cap_nested_kvm_hv(val) < 0) {
-                error_setg(errp,
-"Error enabling cap-nested-hv with KVM, try cap-nested-hv=off");
+                error_setg(errp, "Error enabling cap-nested-hv with KVM");
+                error_append_hint(errp,
+                                  "Try appending -machine cap-nested-hv=off");
         }
     }
 }
@@ -426,6 +432,7 @@  static void cap_nested_kvm_hv_apply(SpaprMachineState *spapr,
 static void cap_large_decr_apply(SpaprMachineState *spapr,
                                  uint8_t val, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     PowerPCCPU *cpu = POWERPC_CPU(first_cpu);
     PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
 
@@ -436,22 +443,23 @@  static void cap_large_decr_apply(SpaprMachineState *spapr,
     if (tcg_enabled()) {
         if (!ppc_check_compat(cpu, CPU_POWERPC_LOGICAL_3_00, 0,
                               spapr->max_compat_pvr)) {
-            error_setg(errp,
-                "Large decrementer only supported on POWER9, try -cpu POWER9");
+            error_setg(errp, "Large decrementer only supported on POWER9");
+            error_append_hint(errp, "Try -cpu POWER9\n");
             return;
         }
     } else if (kvm_enabled()) {
         int kvm_nr_bits = kvmppc_get_cap_large_decr();
 
         if (!kvm_nr_bits) {
-            error_setg(errp,
-                       "No large decrementer support,"
-                        " try appending -machine cap-large-decr=off");
+            error_setg(errp, "No large decrementer support");
+            error_append_hint(errp,
+                              "Try appending -machine cap-large-decr=off\n");
         } else if (pcc->lrg_decr_bits != kvm_nr_bits) {
             error_setg(errp,
-"KVM large decrementer size (%d) differs to model (%d),"
-                " try appending -machine cap-large-decr=off",
-                kvm_nr_bits, pcc->lrg_decr_bits);
+                       "KVM large decrementer size (%d) differs to model (%d)",
+                       kvm_nr_bits, pcc->lrg_decr_bits);
+            error_append_hint(errp,
+                              "Try appending -machine cap-large-decr=off\n");
         }
     }
 }
@@ -460,14 +468,15 @@  static void cap_large_decr_cpu_apply(SpaprMachineState *spapr,
                                      PowerPCCPU *cpu,
                                      uint8_t val, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     CPUPPCState *env = &cpu->env;
     target_ulong lpcr = env->spr[SPR_LPCR];
 
     if (kvm_enabled()) {
         if (kvmppc_enable_cap_large_decr(cpu, val)) {
-            error_setg(errp,
-                       "No large decrementer support,"
-                       " try appending -machine cap-large-decr=off");
+            error_setg(errp, "No large decrementer support");
+            error_append_hint(errp,
+                              "Try appending -machine cap-large-decr=off\n");
         }
     }
 
@@ -482,6 +491,7 @@  static void cap_large_decr_cpu_apply(SpaprMachineState *spapr,
 static void cap_ccf_assist_apply(SpaprMachineState *spapr, uint8_t val,
                                  Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     uint8_t kvm_val = kvmppc_get_cap_count_cache_flush_assist();
 
     if (tcg_enabled() && val) {
@@ -504,14 +514,15 @@  static void cap_ccf_assist_apply(SpaprMachineState *spapr, uint8_t val,
             return;
         }
         error_setg(errp,
-"Requested count cache flush assist capability level not supported by kvm,"
-                   " try appending -machine cap-ccf-assist=off");
+"Requested count cache flush assist capability level not supported by KVM");
+        error_append_hint(errp, "Try appending -machine cap-ccf-assist=off\n");
     }
 }
 
 static void cap_fwnmi_apply(SpaprMachineState *spapr, uint8_t val,
                                 Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     if (!val) {
         return; /* Disabled by default */
     }