Each domain can have a different number of max VCPUs in Xen4. Prepare for this by converting the static array into a dynamic one.
Signed-off-by: Petr Tesarik <[email protected]> --- xen_hyper.c | 11 +++++++++++ xen_hyper_defs.h | 2 +- 2 files changed, 12 insertions(+), 1 deletion(-) --- a/xen_hyper.c +++ b/xen_hyper.c @@ -1244,6 +1244,10 @@ xen_hyper_store_domain_context(struct xe dc->domain_flags = XEN_HYPER_DOMF_ERROR; } dc->evtchn = ULONG(dp + XEN_HYPER_OFFSET(domain_evtchn)); + if (!(dc->vcpu = malloc(sizeof(ulong) * XEN_HYPER_MAX_VIRT_CPUS))) { + error(FATAL, "cannot malloc vcpu array (%d VCPUs).", + XEN_HYPER_MAX_VIRT_CPUS); + } for (i = 0; i < XEN_HYPER_MAX_VIRT_CPUS; i++) { dc->vcpu[i] = ULONG(dp + XEN_HYPER_OFFSET(domain_vcpu) + i*sizeof(void *)); if (dc->vcpu[i]) XEN_HYPER_NR_VCPUS_IN_DOM(dc)++; @@ -1308,6 +1312,13 @@ xen_hyper_alloc_domain_context_space(int } xhdt->context_array_cnt = domains; } else if (domains > xhdt->context_array_cnt) { + struct xen_hyper_domain_context *dc; + int i; + for (dc = xhdt->context_array, i = 0; + i < xhdt->context_array_cnt; ++dc, ++i) { + if (dc->vcpu) + free(dc->vcpu); + } if (!(xhdt->context_array = realloc(xhdt->context_array, domains * sizeof(struct xen_hyper_domain_context)))) { --- a/xen_hyper_defs.h +++ b/xen_hyper_defs.h @@ -463,7 +463,7 @@ struct xen_hyper_domain_context { ulong domain_flags; ulong evtchn; int vcpu_cnt; - ulong vcpu[XEN_HYPER_MAX_VIRT_CPUS]; + ulong *vcpu; struct xen_hyper_vcpu_context_array *vcpu_context_array; }; -- Crash-utility mailing list [email protected] https://www.redhat.com/mailman/listinfo/crash-utility
