From: Paolo Bonzini <pbonzini@redhat.com>
To: Christian Borntraeger <borntraeger@de.ibm.com>, kvm@vger.kernel.org
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>,
linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Cornelia Huck <cohuck@redhat.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jon Masters <jcm@redhat.com>, Marcus Meissner <meissner@suse.de>,
Jiri Kosina <jkosina@suse.cz>
Subject: Re: [PATCH 5/6] KVM: s390: wire up seb feature
Date: Wed, 17 Jan 2018 12:32:11 +0100 [thread overview]
Message-ID: <db8adc42-2d57-68ee-9532-79a7020fe914@redhat.com> (raw)
In-Reply-To: <23083bfd-7fd9-0b03-53ba-fa5f4d46a6b6@de.ibm.com>
On 17/01/2018 12:29, Christian Borntraeger wrote:
>> The problem is not that I announce the facility, I in fact announce that the
>> programmatic interface is available (the sebc sync reg and the usage of that field).
>> (So the CAP is part of this patch to have both in lockstep)
>> A non-existing facility will then just disable that programmatic interface.
> To put it differently. CAP_S390_GS and CAP_S390_SEB could also just
> do a
>
> return 1;
>
> and the QEMU has to check both (which it probably does anyway)
I see. Thanks for the explanation!
Paolo
next prev parent reply other threads:[~2018-01-17 11:32 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-17 9:48 [PATCH 0/6] s390: improve speculative execution handling Martin Schwidefsky
2018-01-17 9:48 ` [PATCH 1/6] s390/alternative: use a copy of the facility bit mask Martin Schwidefsky
2018-01-17 13:54 ` David Hildenbrand
2018-01-17 14:24 ` Cornelia Huck
2018-01-17 9:48 ` [PATCH 2/6] s390: implement nospec_[load|ptr] Martin Schwidefsky
2018-01-17 12:41 ` Jiri Kosina
2018-01-17 14:52 ` Jon Masters
2018-01-17 13:58 ` David Hildenbrand
2018-01-17 14:04 ` Christian Borntraeger
2018-01-17 9:48 ` [PATCH 3/6] s390: add options to change branch prediction behaviour for the kernel Martin Schwidefsky
2018-01-18 9:52 ` Cornelia Huck
2018-01-19 4:53 ` QingFeng Hao
2018-01-17 9:48 ` [PATCH 4/6] s390: add system call to run tasks with modified branch prediction Martin Schwidefsky
2018-01-17 10:03 ` Florian Weimer
2018-01-17 10:05 ` Paolo Bonzini
2018-01-17 11:14 ` Christian Borntraeger
2018-01-17 11:50 ` Paolo Bonzini
2018-01-17 11:55 ` Martin Schwidefsky
2018-01-17 13:25 ` Heiko Carstens
2018-01-17 9:48 ` [PATCH 5/6] KVM: s390: wire up seb feature Martin Schwidefsky
2018-01-17 11:18 ` Christian Borntraeger
2018-01-17 11:22 ` Paolo Bonzini
2018-01-17 11:28 ` Christian Borntraeger
2018-01-17 11:29 ` Christian Borntraeger
2018-01-17 11:32 ` Paolo Bonzini [this message]
2018-01-17 11:33 ` David Hildenbrand
2018-01-17 11:39 ` Christian Borntraeger
2018-01-17 13:44 ` [PATCH v2] KVM: s390: wire up bpb feature Christian Borntraeger
2018-01-17 13:51 ` David Hildenbrand
2018-01-17 21:43 ` Christian Borntraeger
2018-01-18 6:27 ` Martin Schwidefsky
2018-01-18 9:59 ` Cornelia Huck
2018-01-18 10:09 ` Christian Borntraeger
2018-01-17 9:48 ` [PATCH 6/6] s390: scrub registers on kernel entry and KVM exit Martin Schwidefsky
2018-01-19 6:29 ` QingFeng Hao
2018-01-19 7:57 ` Christian Borntraeger
2018-01-19 8:27 ` QingFeng Hao
2018-01-17 12:00 ` [PATCH 0/6] s390: improve speculative execution handling Cornelia Huck
2018-01-17 12:05 ` Christian Borntraeger
2018-01-17 13:29 ` Greg Kroah-Hartman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=db8adc42-2d57-68ee-9532-79a7020fe914@redhat.com \
--to=pbonzini@redhat.com \
--cc=borntraeger@de.ibm.com \
--cc=cohuck@redhat.com \
--cc=gregkh@linuxfoundation.org \
--cc=heiko.carstens@de.ibm.com \
--cc=jcm@redhat.com \
--cc=jkosina@suse.cz \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=meissner@suse.de \
--cc=schwidefsky@de.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox