linux-kernel - Re: [RFC PATCH V4 14/17] x86/hyperv/sev: Add AMD sev-snp enlightened guest support on hyperv

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Message-ID: <32dec1c9-d38b-1612-ba53-17c495c120d3@gmail.com>
Date:   Sun, 16 Apr 2023 15:21:31 +0800
From:   Tianyu Lan <ltykernel@...il.com>
To:     "Gupta, Pankaj" <pankaj.gupta@....com>, luto@...nel.org,
        tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
        dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com,
        seanjc@...gle.com, pbonzini@...hat.com, jgross@...e.com,
        tiala@...rosoft.com, kirill@...temov.name,
        jiangshan.ljs@...group.com, peterz@...radead.org,
        ashish.kalra@....com, srutherford@...gle.com,
        akpm@...ux-foundation.org, anshuman.khandual@....com,
        pawan.kumar.gupta@...ux.intel.com, adrian.hunter@...el.com,
        daniel.sneddon@...ux.intel.com, alexander.shishkin@...ux.intel.com,
        sandipan.das@....com, ray.huang@....com, brijesh.singh@....com,
        michael.roth@....com, thomas.lendacky@....com,
        venu.busireddy@...cle.com, sterritt@...gle.com,
        tony.luck@...el.com, samitolvanen@...gle.com, fenghua.yu@...el.com
Cc:     pangupta@....com, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, linux-hyperv@...r.kernel.org,
        linux-arch@...r.kernel.org
Subject: Re: [RFC PATCH V4 14/17] x86/hyperv/sev: Add AMD sev-snp enlightened
 guest support on hyperv

On 4/5/2023 1:43 PM, Gupta, Pankaj wrote:
>> +
>> +        if (!pending_events.vector)
>> +            return;
> 
> This prevents do_exc_hv() executing from #hv handler as 
> "hv_handling_events" never resets?
> 

Nice catch! Will fix in the next version.