Hi Zide, On Mon, Jul 15, 2024 at 03:18:07PM -0700, Chen, Zide wrote: > Date: Mon, 15 Jul 2024 15:18:07 -0700 > From: "Chen, Zide" <zide.chen@xxxxxxxxx> > Subject: Re: [PATCH v3 7/8] target/i386/kvm: Clean up return values of MSR > filter related functions > > On 7/14/2024 9:49 PM, Zhao Liu wrote: > > @@ -5274,13 +5272,13 @@ void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg) > > } > > } > > > > -static bool kvm_install_msr_filters(KVMState *s) > > +static int kvm_install_msr_filters(KVMState *s) > > { > > uint64_t zero = 0; > > struct kvm_msr_filter filter = { > > .flags = KVM_MSR_FILTER_DEFAULT_ALLOW, > > }; > > - int r, i, j = 0; > > + int ret, i, j = 0; > > > > for (i = 0; i < KVM_MSR_FILTER_MAX_RANGES; i++) { > > Nit: Since it's a clean up patch, how about replace > KVM_MSR_FILTER_MAX_RANGES with ARRAY_SIZE(msr_handlers), to make the > code consistent in other places to refer to the array size of > msr_handlers[]. Yes, that's fine, I'll add a new small trivial patch to clean up this. > > KVMMSRHandlers *handler = &msr_handlers[i]; > > @@ -5304,18 +5302,18 @@ static bool kvm_install_msr_filters(KVMState *s) > > } > > } > > > > - r = kvm_vm_ioctl(s, KVM_X86_SET_MSR_FILTER, &filter); > > - if (r) { > > - return false; > > + ret = kvm_vm_ioctl(s, KVM_X86_SET_MSR_FILTER, &filter); > > + if (ret) { > > + return ret; > > } > > > > - return true; > > + return 0; > > } > > Nit: Seems ret is not needed here, and can directly return kvm_vm_ioctl(); Yes, good catch! Thanks for you review! Zhao