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Re: [PATCH RESEND 0/4] Add extra information to versioned CPU models


From: Tao Xu
Subject: Re: [PATCH RESEND 0/4] Add extra information to versioned CPU models
Date: Mon, 9 Dec 2019 10:43:55 +0800
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.1

On 12/5/2019 4:55 PM, Xiaoyao Li wrote:
On 12/2/2019 2:32 PM, Tao Xu wrote:
This series of patches will remove MPX from Denverton, remove Remove
monitor from some CPU models. Add additional information for -cpu help
to indicate the changes in this version of CPU model.

The output is as follows:
x86_64-softmmu/qemu-system-x86_64 -cpu help | grep "\["
x86 Broadwell-v2          Intel Core Processor (Broadwell) [no TSX]
x86 Broadwell-v3          Intel Core Processor (Broadwell) [IBRS]
x86 Broadwell-v4          Intel Core Processor (Broadwell) [no TSX, IBRS]

Above the changes of each Broadwell-v{2,3,4} are based on Broadwell-v1.

x86 Cascadelake-Server-v2  Intel Xeon Processor (Cascadelake) 
[ARCH_CAPABILITIES]
x86 Cascadelake-Server-v3  Intel Xeon Processor (Cascadelake) [no TSX]

But in the code, Cascadelake-Server-v3 inherits all the features in
Cascadelake-Server-v2 and removes TSX related hle & rtm.

So if we keep the same rule based on v1, it should be

   x86 Cascadelake-Server-v3  Intel Xeon Processor (Cascadelake)
[ARCH_CAPABILITIES, no TSX]

Thank you for your suggestion. I will correct this.




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