linux-kernel - Re: [PATCH v2 0/3] s390/cpufeature: rework to allow different types of cpufeatures

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Date:   Thu, 14 Jul 2022 12:53:25 +0200
From:   Heiko Carstens <hca@...ux.ibm.com>
To:     Steffen Eiden <seiden@...ux.ibm.com>
Cc:     Alexander Gordeev <agordeev@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Claudio Imbrenda <imbrenda@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>, linux-s390@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org, nrb@...ux.ibm.com
Subject: Re: [PATCH v2 0/3] s390/cpufeature: rework to allow different types
 of cpufeatures

On Wed, Jul 13, 2022 at 02:56:41PM +0200, Steffen Eiden wrote:
> Currently the s390 implementaion of cpufeature is limited to elf_hwcap
> bits. Using these to automatically load modules also exposes this
> cpufeature to userspace which, sometimes is not intended.
> 
> Therefore, rework the s390-cpufeature implementation to allow for
> various cpu feature indications, which is not only limited to hwcap bits.
> 
> Add a new type to allow facilities to be a cpufeature without using
> hwcap bits that expose this feature to userspace.
> 
> Load uvdevice when facility 158 is present.
> 
> since v1:
> 	* add r-bs from Claudio
> 	* worked in comments
> 
> Heiko Carstens (2):
>   s390/cpufeature: rework to allow more than only hwcap bits
>   s390/cpufeature: allow for facility bits
> 
> Steffen Eiden (1):
>   s390/uvdevice: autoload module based on CPU facility

Series applied, thanks!