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Re: [Qemu-devel] [PATCH RFC] i386: Add new Hygon 'Dhyana' and 'Dhyana-IB
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From: |
Pu Wen |
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Subject: |
Re: [Qemu-devel] [PATCH RFC] i386: Add new Hygon 'Dhyana' and 'Dhyana-IBPB' CPU models |
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Date: |
Fri, 12 Apr 2019 23:44:58 +0800 |
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User-agent: |
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 |
On 2019/4/12 22:45, Paolo Bonzini wrote:
> On 12/04/19 15:24, Daniel P. Berrangé wrote:
>>> Add two new base CPU models called 'Dhyana' and 'Dhyana-IBPB' to model
>>> processors from Hygon Dhyana (family 18h), which derived from AMD EPYC
>>> (family 17h). 'Dhyana-IBPB' is a copy of the 'Dhyana' CPU model with
>>> just CPUID_8000_0008_EBX_IBPB added.
>>
>> Do we really need to support both CPU variants ?
>
> Also, I think the compatibility properties are not needed for Dhyana chips.
Will only keep one CPU model with IBPB feature by using the name 'Dhyana'.
Thx.
--
Regards,
Pu Wen