linux-kernel - Re: [PATCH 04/15] KVM: x86: Drop superfluous kvm_hv_set_sint() => kvm_hv_synic_set

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Message-ID: <aDhxlH3yT9XzFyDT@google.com>
Date: Thu, 29 May 2025 07:39:16 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Kai Huang <kai.huang@...el.com>
Cc: "pbonzini@...hat.com" <pbonzini@...hat.com>, "vkuznets@...hat.com" <vkuznets@...hat.com>, 
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>, 
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 04/15] KVM: x86: Drop superfluous kvm_hv_set_sint() =>
 kvm_hv_synic_set_irq() wrapper

On Thu, May 29, 2025, Kai Huang wrote:
> On Mon, 2025-05-19 at 16:27 -0700, Sean Christopherson wrote:
> > Drop the superfluous kvm_hv_set_sint() and instead wire up ->set() directly
> > to its final destination.
> 
> kvm_hv_set_sint() is still there after this patch.  Did you mean "superfluous
> kvm_hv_synic_set_irq()"? :-)

Ugh, yeah, bad changelog.  Maybe this?

  Rename kvm_hv_synic_set_irq() to kvm_hv_set_sint() and drop the previous
  incarnation of kvm_hv_set_sint() provided by irq_comm.c, which is just a
  wrapper to the hyperv.c code.

That said, given that the tracepoint is trace_kvm_hv_synic_set_irq(), and that
the IOAPIC and PIC versions are kvm_ioapic_set_irq() and kvm_pic_set_irq()
respectively, I'm leaning towards a straight drop of kvm_hv_set_sint(), i.e. keep
kvm_hv_synic_set_irq().