On 08/12/2018 04:55 AM, Juergen Gross wrote:

On 11/08/18 16:34, Boris Ostrovsky wrote:

quoted

On 08/11/2018 09:29 AM, Pu Wen wrote:

quoted

 
 bool pmu_msr_read(unsigned int msr, uint64_t *val, int *err)
 {
-	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) {
+	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD ||
+	    boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) {

'if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL)' please.

Really? Xen supports Centaur, too.

VPMU doesn't --- hypervisor will not initialize it. Besides, the
existing code will steer non-AMD execution to Intel, which is not right
either.

I'll add a check to bail if VPMU is not initialized properly, we seem to
ignore xen_pmu_init() failures. Which, BTW, makes this patch rather
pointless until there is support for Hygon Xen.

-boris