Re: [RFC PATCH V2 16/18] x86/sev: Initialize #HV doorbell and handle interrupt requests

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Subject: Re: [RFC PATCH V2 16/18] x86/sev: Initialize #HV doorbell and handle interrupt requests
From: Tianyu Lan <ltykernel@xxxxxxxxx>
Date: Mon, 28 Nov 2022 13:47:02 +0800
Cc: luto@xxxxxxxxxx, tglx@xxxxxxxxxxxxx, mingo@xxxxxxxxxx, bp@xxxxxxxxx, dave.hansen@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, hpa@xxxxxxxxx, seanjc@xxxxxxxxxx, pbonzini@xxxxxxxxxx, jgross@xxxxxxxx, tiala@xxxxxxxxxxxxx, kirill@xxxxxxxxxxxxx, jiangshan.ljs@xxxxxxxxxxxx, peterz@xxxxxxxxxxxxx, ashish.kalra@xxxxxxx, srutherford@xxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, anshuman.khandual@xxxxxxx, pawan.kumar.gupta@xxxxxxxxxxxxxxx, adrian.hunter@xxxxxxxxx, daniel.sneddon@xxxxxxxxxxxxxxx, alexander.shishkin@xxxxxxxxxxxxxxx, sandipan.das@xxxxxxx, ray.huang@xxxxxxx, brijesh.singh@xxxxxxx, michael.roth@xxxxxxx, thomas.lendacky@xxxxxxx, venu.busireddy@xxxxxxxxxx, sterritt@xxxxxxxxxx, tony.luck@xxxxxxxxx, samitolvanen@xxxxxxxxxx, fenghua.yu@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, linux-hyperv@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx
In-reply-to: <m2ilj3kr19.fsf@redhat.com>
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On 11/25/2022 7:49 PM, Christophe de Dinechin wrote:

+void check_hv_pending(struct pt_regs *regs)

This looks like two functions, one with regs == NULL and one with regs,
different internal logic, different call sites. Would you consider splitting
into two?


Good suggestion. Will update in the next version.

References:
- [RFC PATCH V2 00/18] x86/hyperv/sev: Add AMD sev-snp enlightened guest support on hyperv
  - From: Tianyu Lan
- [RFC PATCH V2 16/18] x86/sev: Initialize #HV doorbell and handle interrupt requests
  - From: Tianyu Lan
- Re: [RFC PATCH V2 16/18] x86/sev: Initialize #HV doorbell and handle interrupt requests
  - From: Christophe de Dinechin

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