>>> Haozhong Zhang <haozhong.zh...@intel.com> 07/12/17 4:05 AM >>>
>+static int vcpu_set_vmce(struct vcpu *v,
>+ const struct xen_domctl_ext_vcpucontext *evc)
>+{
>+ /*
>+ * Sizes of vMCE parameters used by the current and past versions
>+ * of Xen in descending order. If vMCE parameters are extended,
>+ * remember to add the old size to this array by VMCE_SIZE().
>+ */
>+#define VMCE_SIZE(field) \
>+ (offsetof(typeof(evc->vmce), field) + sizeof(evc->vmce.field))
>+
>+ static const unsigned int valid_sizes[] = {
>+ sizeof(evc->vmce),
>+ VMCE_SIZE(caps),
>+ };
>+#undef VMCE_SIZE
>+
>+ struct hvm_vmce_vcpu vmce = { };
>+ unsigned int evc_vmce_size =
>+ min(evc->size - offsetof(typeof(*evc), mcg_cap), sizeof(evc->vmce));
I should have noticed this earlier, and I'll try to remember to adjust this
while
committing: Instead of mcg_cap we really should be using vmce here, as the
former is there solely for backward compatibility purposes (which this
expression doesn't relate to directly).
Jan
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