Messages in this thread | | | Subject | Re: [PATCH v2 1/7] KVM: s390: clean up redundant 'kvm_run' parameters | From | Tianjia Zhang <> | Date | Thu, 23 Apr 2020 10:54:35 +0800 |
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On 2020/4/22 21:45, Cornelia Huck wrote: > 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/ ? >
Yes, it should be replaced like this.
>> 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? >
Why not replace `vcpu->run->` to `kvm_run->` ? If not, there will be both styles of code, which is confusing. I will be confused and think that this is something different.
Thanks, Tianjia
>> restore_gs_cb(current->thread.gs_cb); >> } >> preempt_enable();
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