linux-kernel - Re: [PATCH v13 19/22] x86/virt/tdx: Improve readibility of module initialization error handling

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Date:   Fri, 15 Sep 2023 23:14:20 +0000
From:   "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To:     "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Huang, Kai" <kai.huang@...el.com>
CC:     "Raj, Ashok" <ashok.raj@...el.com>,
        "Hansen, Dave" <dave.hansen@...el.com>,
        "david@...hat.com" <david@...hat.com>,
        "bagasdotme@...il.com" <bagasdotme@...il.com>,
        "Luck, Tony" <tony.luck@...el.com>,
        "ak@...ux.intel.com" <ak@...ux.intel.com>,
        "Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
        "kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>,
        "Christopherson,, Sean" <seanjc@...gle.com>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "Yamahata, Isaku" <isaku.yamahata@...el.com>,
        "nik.borisov@...e.com" <nik.borisov@...e.com>,
        "Chatre, Reinette" <reinette.chatre@...el.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "Shahar, Sagi" <sagis@...gle.com>,
        "imammedo@...hat.com" <imammedo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>, "Gao, Chao" <chao.gao@...el.com>,
        "Brown, Len" <len.brown@...el.com>,
        "sathyanarayanan.kuppuswamy@...ux.intel.com" 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        "Huang, Ying" <ying.huang@...el.com>,
        "Williams, Dan J" <dan.j.williams@...el.com>,
        "x86@...nel.org" <x86@...nel.org>
Subject: Re: [PATCH v13 19/22] x86/virt/tdx: Improve readibility of module
 initialization error handling

On Sat, 2023-08-26 at 00:14 +1200, Kai Huang wrote:
> With keeping TDMRs upon successful TDX module initialization, now
> only
> put_online_mems() and freeing the buffers of the TDSYSINFO_STRUCT and
> the CMR array still need to be done even when module initialization
> is
> successful.  On the other hand, all other four "out_*" labels before
> them explicitly check the return value and only clean up when module
> initialization fails.
> 
> This isn't ideal.  Make all other four "out_*" labels only reachable
> when module initialization fails to improve the readibility of error
                                                  ^ Nit: "readability"
> handling.  Rename them from "out_*" to "err_*" to reflect the fact.
> 
> Signed-off-by: Kai Huang <kai.huang@...el.com>

Reviewed-by: Rick Edgecombe <rick.p.edgecombe@...el.com>