From: Cornelia Huck <cohuck@redhat.com>
To: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org,
kvm@vger.kernel.org, Heiko Carstens <heiko.carstens@de.ibm.com>,
Paolo Bonzini <pbonzini@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 1/6] s390/alternative: use a copy of the facility bit mask
Date: Wed, 17 Jan 2018 15:24:13 +0100 [thread overview]
Message-ID: <20180117152413.312ee2fe.cohuck@redhat.com> (raw)
In-Reply-To: <1516182519-10623-2-git-send-email-schwidefsky@de.ibm.com>
On Wed, 17 Jan 2018 10:48:34 +0100
Martin Schwidefsky <schwidefsky@de.ibm.com> wrote:
> To be able to switch off specific CPU alternatives with kernel parameters
> make a copy of the facility bit mask provided by STFLE and use the copy
> for the decision to apply an alternative.
>
> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
> ---
> arch/s390/include/asm/facility.h | 18 ++++++++++++++++++
> arch/s390/include/asm/lowcore.h | 3 ++-
> arch/s390/kernel/alternative.c | 3 ++-
> arch/s390/kernel/early.c | 3 +++
> arch/s390/kernel/setup.c | 4 +++-
> arch/s390/kernel/smp.c | 4 +++-
> 6 files changed, 31 insertions(+), 4 deletions(-)
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
next prev parent reply other threads:[~2018-01-17 14:24 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 [this message]
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
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
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