From: Cornelia Huck <cohuck@redhat•com>
To: Tianjia Zhang <tianjia.zhang@linux•alibaba.com>
Cc: wanpengli@tencent•com, kvm@vger•kernel.org, david@redhat•com,
benh@kernel•crashing.org, heiko.carstens@de•ibm.com,
peterx@redhat•com, linux-mips@vger•kernel.org, paulus@ozlabs•org,
hpa@zytor•com, kvmarm@lists•cs.columbia.edu,
linux-s390@vger•kernel.org, frankja@linux•ibm.com,
maz@kernel•org, joro@8bytes•org, x86@kernel•org,
borntraeger@de•ibm.com, mingo@redhat•com,
julien.thierry.kdev@gmail•com, thuth@redhat•com,
gor@linux•ibm.com, suzuki.poulose@arm•com,
kvm-ppc@vger•kernel.org, bp@alien8•de, tglx@linutronix•de,
linux-arm-kernel@lists•infradead.org, jmattson@google•com,
tsbogend@alpha•franken.de, christoffer.dall@arm•com,
sean.j.christopherson@intel•com, linux-kernel@vger•kernel.org,
james.morse@arm•com, mpe@ellerman•id.au, pbonzini@redhat•com,
vkuznets@redhat•com, linuxppc-dev@lists•ozlabs.org
Subject: Re: [PATCH v2 1/7] KVM: s390: clean up redundant 'kvm_run' parameters
Date: Wed, 22 Apr 2020 15:45:43 +0200 [thread overview]
Message-ID: <20200422154543.2efba3dd.cohuck@redhat.com> (raw)
In-Reply-To: <20200422125810.34847-2-tianjia.zhang@linux.alibaba.com>
On Wed, 22 Apr 2020 20:58:04 +0800
Tianjia Zhang <tianjia.zhang@linux•alibaba.com> wrote:
> In the current kvm version, 'kvm_run' has been included in the 'kvm_vcpu'
> structure. Earlier than historical reasons, many kvm-related function
s/Earlier than/For/ ?
> parameters retain the 'kvm_run' and 'kvm_vcpu' parameters at the same time.
> This patch does a unified cleanup of these remaining redundant parameters.
>
> Signed-off-by: Tianjia Zhang <tianjia.zhang@linux•alibaba.com>
> ---
> arch/s390/kvm/kvm-s390.c | 37 ++++++++++++++++++++++---------------
> 1 file changed, 22 insertions(+), 15 deletions(-)
>
> diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
> index e335a7e5ead7..d7bb2e7a07ff 100644
> --- a/arch/s390/kvm/kvm-s390.c
> +++ b/arch/s390/kvm/kvm-s390.c
> @@ -4176,8 +4176,9 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
> return rc;
> }
>
> -static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
> +static void sync_regs_fmt2(struct kvm_vcpu *vcpu)
> {
> + struct kvm_run *kvm_run = vcpu->run;
> struct runtime_instr_cb *riccb;
> struct gs_cb *gscb;
>
> @@ -4235,7 +4236,7 @@ static void sync_regs_fmt2(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
> }
> if (vcpu->arch.gs_enabled) {
> current->thread.gs_cb = (struct gs_cb *)
> - &vcpu->run->s.regs.gscb;
> + &kvm_run->s.regs.gscb;
Not sure if these changes (vcpu->run-> => kvm_run->) are really worth
it. (It seems they amount to at least as much as the changes advertised
in the patch description.)
Other opinions?
> restore_gs_cb(current->thread.gs_cb);
> }
> preempt_enable();
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next prev parent reply other threads:[~2020-04-22 13:46 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-22 12:58 [PATCH v2 0/7] clean up redundant 'kvm_run' parameters Tianjia Zhang
2020-04-22 12:58 ` [PATCH v2 1/7] KVM: s390: " Tianjia Zhang
2020-04-22 13:45 ` Cornelia Huck [this message]
2020-04-22 15:58 ` Christian Borntraeger
2020-04-22 16:04 ` Cornelia Huck
2020-04-23 3:01 ` Tianjia Zhang
2020-04-23 10:39 ` Cornelia Huck
2020-04-23 10:58 ` Tianjia Zhang
2020-04-23 11:00 ` Christian Borntraeger
2020-04-23 11:11 ` Tianjia Zhang
2020-04-26 12:59 ` Thomas Huth
2020-04-29 2:20 ` Tianjia Zhang
2020-04-23 3:14 ` Tianjia Zhang
2020-04-23 2:54 ` Tianjia Zhang
2020-04-22 12:58 ` [PATCH v2 2/7] KVM: arm64: " Tianjia Zhang
2020-04-22 12:58 ` [PATCH v2 3/7] KVM: PPC: Remove redundant kvm_run from vcpu_arch Tianjia Zhang
2020-04-22 12:58 ` [PATCH v2 4/7] KVM: PPC: clean up redundant 'kvm_run' parameters Tianjia Zhang
2020-04-22 12:58 ` [PATCH v2 5/7] KVM: PPC: clean up redundant kvm_run parameters in assembly Tianjia Zhang
2020-04-22 12:58 ` [PATCH v2 6/7] KVM: MIPS: clean up redundant 'kvm_run' parameters Tianjia Zhang
2020-04-22 12:58 ` [PATCH v2 7/7] KVM: MIPS: clean up redundant kvm_run parameters in assembly Tianjia Zhang
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