On Tue, Feb 04, 2020 at 05:19:26PM +0800, Xiaoyao Li wrote: > > > + case MSR_IA32_CORE_CAPS: > > > + if (!msr_info->host_initiated) > > > > Shouldn't @data be checked against kvm_get_core_capabilities()? > > Maybe it's for the case that userspace might have the ability to emulate SLD > feature? And we usually let userspace set whatever it wants, e.g., > ARCH_CAPABILITIES. If the 'sq_misc.split_lock' event is sufficiently accurate, I suppose the host could use that to emulate the feature at the cost of one counter used.
