From: Laszlo Ersek <ler...@redhat.com> * Commit ca230ff33f89 added the @arch field to @CpuInfoFast, but it failed to set the new field in qmp_query_cpus_fast(), when TARGET_S390X was not defined. The updated @query-cpus-fast example in "qapi-schema.json" showed "arch":"x86" only because qmp_query_cpus_fast() calls g_malloc0() to allocate @CpuInfoFast, and the CPU_INFO_ARCH_X86 enum constant is generated with value 0.
All @arch values other than @s390 implied the @CpuInfoOther sub-struct for @CpuInfoFast -- at the time of writing the patch --, thus no fields other than @arch needed to be set when TARGET_S390X was not defined. Set @arch now, by copying the corresponding assignments from qmp_query_cpus(). * Commit 25fa194b7b11 added the @riscv enum constant to @CpuInfoArch (used in both @CpuInfo and @CpuInfoFast -- the return types of the @query-cpus and @query-cpus-fast commands, respectively), and assigned, in both return structures, the @CpuInfoRISCV sub-structure to the new enum value. However, qmp_query_cpus_fast() would not populate either the @arch field or the @CpuInfoRISCV sub-structure, when TARGET_RISCV was defined; only qmp_query_cpus() would. Assign @CpuInfoOther to the @riscv enum constant in @CpuInfoFast, and populate only the @arch field in qmp_query_cpus_fast(). Getting CPU state without interrupting KVM is an exceptional thing that only S390X does currently. Quoting Cornelia Huck <coh...@redhat.com>, "s390x is exceptional in that it has state in QEMU that is actually interesting for upper layers and can be retrieved without performance penalty". See also <https://www.redhat.com/archives/libvir-list/2018-February/msg00121.html>. Cc: Cornelia Huck <coh...@redhat.com> Cc: Eric Blake <ebl...@redhat.com> Cc: Markus Armbruster <arm...@redhat.com> Cc: Viktor VM Mihajlovski <mihaj...@linux.vnet.ibm.com> Cc: qemu-sta...@nongnu.org Fixes: ca230ff33f89bf7102cbfbc2328716da6750aaed Fixes: 25fa194b7b11901561532e435beb83d046899f7a Signed-off-by: Laszlo Ersek <ler...@redhat.com> Reviewed-by: Eric Blake <ebl...@redhat.com> Reviewed-by: Cornelia Huck <coh...@redhat.com> Reviewed-by: Markus Armbruster <arm...@redhat.com> Message-Id: <20180427192852.15013-2-ler...@redhat.com> Signed-off-by: Markus Armbruster <arm...@redhat.com> (cherry picked from commit 96054f56396eaa0b9b5c681fc3e42a0004b17ade) Signed-off-by: Michael Roth <mdr...@linux.vnet.ibm.com> --- cpus.c | 16 +++++++++++++++- qapi/misc.json | 2 +- 2 files changed, 16 insertions(+), 2 deletions(-) diff --git a/cpus.c b/cpus.c index e1d94038fd..6fa701e423 100644 --- a/cpus.c +++ b/cpus.c @@ -2218,11 +2218,25 @@ CpuInfoFastList *qmp_query_cpus_fast(Error **errp) info->value->props = props; } -#if defined(TARGET_S390X) +#if defined(TARGET_I386) + info->value->arch = CPU_INFO_ARCH_X86; +#elif defined(TARGET_PPC) + info->value->arch = CPU_INFO_ARCH_PPC; +#elif defined(TARGET_SPARC) + info->value->arch = CPU_INFO_ARCH_SPARC; +#elif defined(TARGET_MIPS) + info->value->arch = CPU_INFO_ARCH_MIPS; +#elif defined(TARGET_TRICORE) + info->value->arch = CPU_INFO_ARCH_TRICORE; +#elif defined(TARGET_S390X) s390_cpu = S390_CPU(cpu); env = &s390_cpu->env; info->value->arch = CPU_INFO_ARCH_S390; info->value->u.s390.cpu_state = env->cpu_state; +#elif defined(TARGET_RISCV) + info->value->arch = CPU_INFO_ARCH_RISCV; +#else + info->value->arch = CPU_INFO_ARCH_OTHER; #endif if (!cur_item) { head = cur_item = info; diff --git a/qapi/misc.json b/qapi/misc.json index 5636f4a149..104d013adb 100644 --- a/qapi/misc.json +++ b/qapi/misc.json @@ -573,7 +573,7 @@ 'mips': 'CpuInfoOther', 'tricore': 'CpuInfoOther', 's390': 'CpuInfoS390', - 'riscv': 'CpuInfoRISCV', + 'riscv': 'CpuInfoOther', 'other': 'CpuInfoOther' } } ## -- 2.17.1
