On 23/07/2018 15:20, Pu Wen wrote:
> Add x86 architecture support for new processor Hygon Dhyana Family 18h.
> Rework to create a separated file(arch/x86/kernel/cpu/hygon.c) from the
> AMD init one(arch/x86/kernel/cpu/amd.c) to initialize Dhyana CPU. In
> this way we can remove old AMD architecture support codes from Hygon
> code path and generate a clear initialization flow for Hygon processors,
> it also reduce long-term maintenance effort.
> Also add hygon.c Maintainer information in accordance.
>
> To identify Hygon processors, add a new vendor type X86_VENDOR_HYGON(9)
> for system recognition.
>
> To enable Hygon processor config, add a separated Kconfig entry(CPU_SUP_
> HYGON) for Dhyana CPU in kernel config setup.
If Hygon processors are currently the same as AMD, I don't see the point
in creating a new file just for them. Likewise for example in patch 6
+ case X86_VENDOR_HYGON:
+ ideal_nops = p6_nops;
+ return;
+
case X86_VENDOR_AMD:
if (boot_cpu_data.x86 > 0xf) {
ideal_nops = p6_nops;
Should only need to add "case X86_VENDOR_HYGON:". Or you could even
reuse X86_VENDOR_AMD.
Paolo
