x86: NOMWAIT HLT C1 as the default idle state at hygon platform.

For performance considerations, the hygon platform defaults to using HLT as the C1 state.

Signed-off-by: yuehognwu yuehongwu@tencent.com
Reviewed-by: caelli caelli@tencent.com
Signed-off-by: Jianping Liu <frankjpliu@tencent.com>

arch/x86/kernel/setup.c

@@ -822,6 +822,9 @@ void __init setup_arch(char **cmdline_p)
 	 */
 	x86_configure_nx();
 
+	if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON)
+		boot_option_idle_override = IDLE_NOMWAIT;
+
 	parse_early_param();
 
 	if (efi_enabled(EFI_BOOT))