linux-kernel - Re: [v2 1/4] KVM: irqchip: add setup empty irq routing function

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Date: Tue, 23 Jan 2024 18:47:40 +0000
From: Oliver Upton <oliver.upton@...ux.dev>
To: Yi Wang <up2wing@...il.com>
Cc: seanjc@...gle.com, pbonzini@...hat.com, tglx@...utronix.de,
	mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
	x86@...nel.org, hpa@...or.com, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, wanpengli@...cent.com,
	foxywang@...cent.com, maz@...nel.org, anup@...infault.org,
	atishp@...shpatra.org, borntraeger@...ux.ibm.com,
	frankja@...ux.ibm.com, imbrenda@...ux.ibm.com
Subject: Re: [v2 1/4] KVM: irqchip: add setup empty irq routing function

On Sun, Jan 21, 2024 at 07:17:27PM +0800, Yi Wang wrote:
> Add a new function to setup empty irq routing in kvm path, which
> can be invoded in non-architecture-specific functions. The difference
> compared to the kvm_setup_empty_irq_routing() is this function just
> alloc the empty irq routing and does not need synchronize srcu, as
> we will call it in kvm_create_vm().
> 
> This patch is a preparatory step for an upcoming patch to avoid
> delay in KVM_CAP_SPLIT_IRQCHIP ioctl.

Adding a function in a separate patch from its callsites is never
useful. Please squash this into the second patch.

-- 
Thanks,
Oliver