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Thu, 11 Jun 2020 15:35:14 +0000 (UTC) Subject: Re: [PATCH v3 3/4] spapr: Use error_append_hint() in spapr_caps.c To: Greg Kurz , David Gibson References: <159188280345.70166.14940592691021389043.stgit@bahia.lan> <159188282644.70166.8098075112034429343.stgit@bahia.lan> From: Laurent Vivier Autocrypt: addr=lvivier@redhat.com; prefer-encrypt=mutual; keydata= mQINBFYFJhkBEAC2me7w2+RizYOKZM+vZCx69GTewOwqzHrrHSG07MUAxJ6AY29/+HYf6EY2 WoeuLWDmXE7A3oJoIsRecD6BXHTb0OYS20lS608anr3B0xn5g0BX7es9Mw+hV/pL+63EOCVm SUVTEQwbGQN62guOKnJJJfphbbv82glIC/Ei4Ky8BwZkUuXd7d5NFJKC9/GDrbWdj75cDNQx UZ9XXbXEKY9MHX83Uy7JFoiFDMOVHn55HnncflUncO0zDzY7CxFeQFwYRbsCXOUL9yBtqLer Ky8/yjBskIlNrp0uQSt9LMoMsdSjYLYhvk1StsNPg74+s4u0Q6z45+l8RAsgLw5OLtTa+ePM JyS7OIGNYxAX6eZk1+91a6tnqfyPcMbduxyBaYXn94HUG162BeuyBkbNoIDkB7pCByed1A7q q9/FbuTDwgVGVLYthYSfTtN0Y60OgNkWCMtFwKxRaXt1WFA5ceqinN/XkgA+vf2Ch72zBkJL RBIhfOPFv5f2Hkkj0MvsUXpOWaOjatiu0fpPo6Hw14UEpywke1zN4NKubApQOlNKZZC4hu6/ 8pv2t4HRi7s0K88jQYBRPObjrN5+owtI51xMaYzvPitHQ2053LmgsOdN9EKOqZeHAYG2SmRW LOxYWKX14YkZI5j/TXfKlTpwSMvXho+efN4kgFvFmP6WT+tPnwARAQABtCNMYXVyZW50IFZp dmllciA8bHZpdmllckByZWRoYXQuY29tPokCOAQTAQIAIgUCVgVQgAIbAwYLCQgHAwIGFQgC CQoLBBYCAwECHgECF4AACgkQ8ww4vT8vvjwpgg//fSGy0Rs/t8cPFuzoY1cex4limJQfReLr SJXCANg9NOWy/bFK5wunj+h/RCFxIFhZcyXveurkBwYikDPUrBoBRoOJY/BHK0iZo7/WQkur 6H5losVZtrotmKOGnP/lJYZ3H6OWvXzdz8LL5hb3TvGOP68K8Bn8UsIaZJoeiKhaNR0sOJyI YYbgFQPWMHfVwHD/U+/gqRhD7apVysxv5by/pKDln1I5v0cRRH6hd8M8oXgKhF2+rAOL7gvh jEHSSWKUlMjC7YwwjSZmUkL+TQyE18e2XBk85X8Da3FznrLiHZFHQ/NzETYxRjnOzD7/kOVy gKD/o7asyWQVU65mh/ECrtjfhtCBSYmIIVkopoLaVJ/kEbVJQegT2P6NgERC/31kmTF69vn8 uQyW11Hk8tyubicByL3/XVBrq4jZdJW3cePNJbTNaT0d/bjMg5zCWHbMErUib2Nellnbg6bc 2HLDe0NLVPuRZhHUHM9hO/JNnHfvgiRQDh6loNOUnm9Iw2YiVgZNnT4soUehMZ7au8PwSl4I KYE4ulJ8RRiydN7fES3IZWmOPlyskp1QMQBD/w16o+lEtY6HSFEzsK3o0vuBRBVp2WKnssVH qeeV01ZHw0bvWKjxVNOksP98eJfWLfV9l9e7s6TaAeySKRRubtJ+21PRuYAxKsaueBfUE7ZT 7ze0LUxhdXJlbnQgVml2aWVyIChSZWQgSGF0KSA8bHZpdmllckByZWRoYXQuY29tPokCOAQT AQIAIgUCVgUmGQIbAwYLCQgHAwIGFQgCCQoLBBYCAwECHgECF4AACgkQ8ww4vT8vvjxtNBAA o2xGmbXl9vJQALkj7MVlsMlgewQ1rdoZl+bZ6ythTSBsqwwtl1BUTQGA1GF2LAchRVYca5bJ lw4ai5OdZ/rc5dco2XgrRFtj1np703BzNEhGU1EFxtms/Y9YOobq/GZpck5rK8jV4osEb8oc 3xEgCm/xFwI/2DOe0/s2cHKzRkvdmKWEDhT1M+7UhtSCnloX776zCsrofYiHP2kasFyMa/5R 9J1Rt9Ax/jEAX5vFJ8+NPf68497nBfrAtLM3Xp03YJSr/LDxer44Mevhz8dFw7IMRLhnuSfr 8jP93lr6Wa8zOe3pGmFXZWpNdkV/L0HaeKwTyDKKdUDH4U7SBnE1gcDfe9x08G+oDfVhqED8 qStKCxPYxRUKIdUjGPF3f5oj7N56Q5zZaZkfxeLNTQ13LDt3wGbVHyZxzFc81B+qT8mkm74y RbeVSuviPTYjbBQ66GsUgiZZpDUyJ6s54fWqQdJf4VFwd7M/mS8WEejbSjglGHMxMGiBeRik Y0+ur5KAF7z0D1KfW1kHO9ImQ0FbEbMbTMf9u2+QOCrSWOz/rj23EwPrCQ2TSRI2fWakMJZ+ zQZvy+ei3D7lZ09I9BT/GfFkTIONgtNfDxwyMc4v4XyP0IvvZs/YZqt7j3atyTZM0S2HSaZ9 rXmQYkBt1/u691cZfvy+Tr2xZaDpFcjPkci5Ag0EVgUmGQEQALxSQRbl/QOnmssVDxWhHM5T Gxl7oLNJms2zmBpcmlrIsn8nNz0rRyxT460k2niaTwowSRK8KWVDeAW6ZAaWiYjLlTunoKwv F8vP3JyWpBz0diTxL5o+xpvy/Q6YU3BNefdq8Vy3rFsxgW7mMSrI/CxJ667y8ot5DVugeS2N yHfmZlPGE0Nsy7hlebS4liisXOrN3jFzasKyUws3VXek4V65lHwB23BVzsnFMn/bw/rPliqX Gcwl8CoJu8dSyrCcd1Ibs0/Inq9S9+t0VmWiQWfQkz4rvEeTQkp/VfgZ6z98JRW7S6l6eoph oWs0/ZyRfOm+QVSqRfFZdxdP2PlGeIFMC3fXJgygXJkFPyWkVElr76JTbtSHsGWbt6xUlYHK XWo+xf9WgtLeby3cfSkEchACrxDrQpj+Jt/JFP+q997dybkyZ5IoHWuPkn7uZGBrKIHmBunT co1+cKSuRiSCYpBIXZMHCzPgVDjk4viPbrV9NwRkmaOxVvye0vctJeWvJ6KA7NoAURplIGCq kCRwg0MmLrfoZnK/gRqVJ/f6adhU1oo6z4p2/z3PemA0C0ANatgHgBb90cd16AUxpdEQmOCm dNnNJF/3Zt3inzF+NFzHoM5Vwq6rc1JPjfC3oqRLJzqAEHBDjQFlqNR3IFCIAo4SYQRBdAHB CzkM4rWyRhuVABEBAAGJAh8EGAECAAkFAlYFJhkCGwwACgkQ8ww4vT8vvjwg9w//VQrcnVg3 TsjEybxDEUBm8dBmnKqcnTBFmxN5FFtIWlEuY8+YMiWRykd8Ln9RJ/98/ghABHz9TN8TRo2b 6WimV64FmlVn17Ri6FgFU3xNt9TTEChqAcNg88eYryKsYpFwegGpwUlaUaaGh1m9OrTzcQy+ klVfZWaVJ9Nw0keoGRGb8j4XjVpL8+2xOhXKrM1fzzb8JtAuSbuzZSQPDwQEI5CKKxp7zf76 J21YeRrEW4WDznPyVcDTa+tz++q2S/BpP4W98bXCBIuQgs2m+OflERv5c3Ojldp04/S4NEjX EYRWdiCxN7ca5iPml5gLtuvhJMSy36glU6IW9kn30IWuSoBpTkgV7rLUEhh9Ms82VWW/h2Tx L8enfx40PrfbDtWwqRID3WY8jLrjKfTdR3LW8BnUDNkG+c4FzvvGUs8AvuqxxyHbXAfDx9o/ jXfPHVRmJVhSmd+hC3mcQ+4iX5bBPBPMoDqSoLt5w9GoQQ6gDVP2ZjTWqwSRMLzNr37rJjZ1 pt0DCMMTbiYIUcrhX8eveCJtY7NGWNyxFCRkhxRuGcpwPmRVDwOl39MB3iTsRighiMnijkbL XiKoJ5CDVvX5yicNqYJPKh5MFXN1bvsBkmYiStMRbrD0HoY1kx5/VozBtc70OU0EB8Wrv9hZ D+Ofp0T3KOr1RUHvCZoLURfFhSQ= Message-ID: <349b059d-0482-0807-141e-8df0af0a7ae5@redhat.com> Date: Thu, 11 Jun 2020 17:35:14 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <159188282644.70166.8098075112034429343.stgit@bahia.lan> Content-Language: en-US X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=207.211.31.81; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/11 03:29:33 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vladimir Sementsov-Ogievskiy , qemu-ppc@nongnu.org, qemu-devel@nongnu.org, Markus Armbruster Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 11/06/2020 15:40, Greg Kurz wrote: > 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, have cap_fwnmi_apply(), which already uses error_append_hint(), > to call ERRP_AUTO_PROPAGATE() as well. > > Signed-off-by: Greg Kurz > Reviewed-by: Vladimir Sementsov-Ogievskiy > --- > hw/ppc/spapr_caps.c | 89 +++++++++++++++++++++++++++++---------------------- > 1 file changed, 50 insertions(+), 39 deletions(-) > > diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c > index 0c2bc8e06e44..27cf2b38af27 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(); > uint8_t kvm_val = kvmppc_get_cap_safe_cache(); > > if (tcg_enabled() && val) { > @@ -256,9 +258,9 @@ 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]); > } > } > > @@ -272,6 +274,7 @@ SpaprCapPossible cap_sbbc_possible = { > static void cap_safe_bounds_check_apply(SpaprMachineState *spapr, uint8_t val, > Error **errp) > { > + ERRP_AUTO_PROPAGATE(); > uint8_t kvm_val = kvmppc_get_cap_safe_bounds_check(); > > if (tcg_enabled() && val) { > @@ -280,9 +283,9 @@ 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]); > } > } > > @@ -299,6 +302,7 @@ SpaprCapPossible cap_ibs_possible = { > static void cap_safe_indirect_branch_apply(SpaprMachineState *spapr, > uint8_t val, Error **errp) > { > + ERRP_AUTO_PROPAGATE(); > uint8_t kvm_val = kvmppc_get_cap_safe_indirect_branch(); > > if (tcg_enabled() && val) { > @@ -307,9 +311,9 @@ 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]); > } > } > > @@ -386,23 +390,25 @@ static void cap_hpt_maxpagesize_cpu_apply(SpaprMachineState *spapr, > static void cap_nested_kvm_hv_apply(SpaprMachineState *spapr, > uint8_t val, Error **errp) > { > + ERRP_AUTO_PROPAGATE(); > if (!val) { > /* capability disabled by default */ > return; > } > > 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\n"); > } 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\n"); > } 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\n"); > } > } > } > @@ -410,6 +416,7 @@ 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); > > @@ -420,22 +427,23 @@ 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"); > } > } > } > @@ -444,14 +452,15 @@ 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"); > } > } > > @@ -466,6 +475,7 @@ 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) { > @@ -488,14 +498,15 @@ 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 */ > } > > Reviewed-by: Laurent Vivier