From: Pierre Morel <pmorel@linux.ibm.com>
To: David Hildenbrand <david@redhat.com>,
Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org,
linux-kernel@vger.kernel.org, borntraeger@de.ibm.com,
frankja@linux.ibm.com, cohuck@redhat.com, thuth@redhat.com,
hca@linux.ibm.com, gor@linux.ibm.com, wintera@linux.ibm.com,
seiden@linux.ibm.com, nrb@linux.ibm.com
Subject: Re: [PATCH v9 3/3] s390x: KVM: resetting the Topology-Change-Report
Date: Mon, 16 May 2022 16:21:54 +0200 [thread overview]
Message-ID: <bae4e416-b0e9-31c6-c9d0-df6b5a5fd46f@linux.ibm.com> (raw)
In-Reply-To: <70a7d93c-c1b1-fa72-0eb4-02e3e2235f94@redhat.com>
On 5/12/22 12:01, David Hildenbrand wrote:
>>>
>>> I think we prefer something like u16 when copying to user space.
>>
>> but then userspace also has to expect a u16, right?
>
> Yep.
>
Yes but in fact, inspired by previous discussion I had on the VFIO
interface, that is the reason why I did prefer an int.
It is much simpler than a u16 and the definition of a bit.
Despite a bit in a u16 is what the s3990 achitecture proposes I thought
we could make it easier on the KVM/QEMU interface.
But if the discussion stops here, I will do as you both propose change
to u16 in KVM and userland and add the documentation for the interface.
Regards,
Pierre
--
Pierre Morel
IBM Lab Boeblingen
next prev parent reply other threads:[~2022-05-16 14:18 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-06 9:24 [PATCH v9 0/3] s390x: KVM: CPU Topology Pierre Morel
2022-05-06 9:24 ` [PATCH v9 1/3] s390x: KVM: ipte lock for SCA access should be contained in KVM Pierre Morel
2022-05-12 9:08 ` David Hildenbrand
2022-05-16 16:30 ` Pierre Morel
2022-05-12 11:32 ` Janosch Frank
2022-05-16 14:13 ` Pierre Morel
2022-05-06 9:24 ` [PATCH v9 2/3] s390x: KVM: guest support for topology function Pierre Morel
2022-05-12 9:24 ` David Hildenbrand
2022-05-16 14:13 ` Pierre Morel
2022-06-17 14:49 ` Pierre Morel
2022-05-12 11:41 ` Janosch Frank
2022-05-16 10:41 ` Pierre Morel
2022-05-19 9:01 ` Christian Borntraeger
2022-05-19 9:23 ` Pierre Morel
2022-05-19 9:36 ` Christian Borntraeger
2022-05-06 9:24 ` [PATCH v9 3/3] s390x: KVM: resetting the Topology-Change-Report Pierre Morel
2022-05-12 9:31 ` David Hildenbrand
2022-05-12 9:52 ` Claudio Imbrenda
2022-05-12 10:01 ` David Hildenbrand
2022-05-16 14:21 ` Pierre Morel [this message]
2022-05-18 14:33 ` David Hildenbrand
2022-05-18 16:55 ` Pierre Morel
2022-05-16 10:36 ` Pierre Morel
2022-05-18 10:51 ` Pierre Morel
2022-05-18 15:26 ` [PATCH v9 0/3] s390x: KVM: CPU Topology Christian Borntraeger
2022-05-18 16:41 ` Pierre Morel
2022-05-19 5:46 ` Heiko Carstens
2022-05-19 8:07 ` Christian Borntraeger
2022-05-19 9:02 ` Pierre Morel
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