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Re: [PATCH v1 0/2] s390x/cpumodel: Introduce "best" model variants

From: David Hildenbrand
Subject: Re: [PATCH v1 0/2] s390x/cpumodel: Introduce "best" model variants
Date: Fri, 8 Nov 2019 23:58:08 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1

On 08.11.19 20:10, Eduardo Habkost wrote:
On Fri, Nov 08, 2019 at 01:02:28PM +0000, Peter Maydell wrote:
On Fri, 8 Nov 2019 at 12:46, David Hildenbrand <address@hidden> wrote:
There is a small but important difference between "max"/"host" and
"best". Max really means "all features", including deprecated ones.
"best", however, can disable experimental or deprecated features. Or any
other features we don't want to be enabled when somebody selects a model

On x86, this is implemented by "host".  "max" gives you the full
set of features that can be enabled by the user.  "host" gives
you a reasonable set of features you will want to see enabled by
default when the user says "use the host CPU".

Interesting. Maybe for s390x we might want to split host/max at one time, too. E.g., exclude deprecated features from "host". Thanks for that info.



David / dhildenb

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