linux-kernel - Re: [PATCH v8 2/2] s390: virtio: PV needs VIRTIO I/O device protection

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Message-ID: <2a0e6ac5-1238-fd7b-f39f-6fad767b1493@linux.ibm.com>
Date:   Wed, 19 Aug 2020 10:51:32 +0200
From:   Pierre Morel <pmorel@...ux.ibm.com>
To:     Cornelia Huck <cohuck@...hat.com>
Cc:     linux-kernel@...r.kernel.org, pasic@...ux.ibm.com,
        borntraeger@...ibm.com, frankja@...ux.ibm.com, mst@...hat.com,
        jasowang@...hat.com, kvm@...r.kernel.org,
        linux-s390@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, thomas.lendacky@....com,
        david@...son.dropbear.id.au, linuxram@...ibm.com,
        hca@...ux.ibm.com, gor@...ux.ibm.com
Subject: Re: [PATCH v8 2/2] s390: virtio: PV needs VIRTIO I/O device
 protection



On 2020-08-18 19:22, Cornelia Huck wrote:

>> + */
>> +int arch_has_restricted_memory_access(struct virtio_device *dev)
>> +{
>> +	if (!is_prot_virt_guest())
>> +		return 0;
> 
> If you just did a
> 
> return is_prot_virt_guest();
> 
> and did the virtio feature stuff in the virtio core, this function
> would be short and sweet :)


yes, the smaller the better, thanks

Pierre

-- 
Pierre Morel
IBM Lab Boeblingen