linux-kernel - RE: [PATCH v8 05/33] x86/traps: add external_interrupt() to dispatch external interrupts

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Date:   Tue, 20 Jun 2023 00:16:38 +0000
From:   "Li, Xin3" <xin3.li@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>
CC:     "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "andrew.cooper3@...rix.com" <andrew.cooper3@...rix.com>,
        "Christopherson,, Sean" <seanjc@...gle.com>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "Shankar, Ravi V" <ravi.v.shankar@...el.com>,
        "jiangshanlai@...il.com" <jiangshanlai@...il.com>,
        "Kang, Shan" <shan.kang@...el.com>
Subject: RE: [PATCH v8 05/33] x86/traps: add external_interrupt() to dispatch
 external interrupts

> That's not the point. Your changelog says:
> 
>   If an external interrupt is a system interrupt...
> 
> It's either an external interrupt which goes through common_interrupt()
> or it is a system interrupt which goes through it's very own handler,
> no?

Ah, then it looks more of a problem in the way how I described it.

What I wanted to describe is the dispatch logic _inside_ the new function
external_interrupt(), what about:

external_interrupt() dispatches all external interrupts: it checks if an
external interrupt is a system interrupt, if yes it dipatches it through
the system_interrupt_handlers table, otherwise to dispatch_common_interrupt().

Thanks!
  Xin