linux-kernel - Re: [patch v3 6/7] x86/smp: Split sending INIT IPI out into a helper function

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Message-ID: <878rce8gei.ffs@tglx>
Date:   Tue, 20 Jun 2023 14:30:45 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Borislav Petkov <bp@...en8.de>
Cc:     LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
        Mario Limonciello <mario.limonciello@....com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Tony Battersby <tonyb@...ernetics.com>,
        Ashok Raj <ashok.raj@...ux.intel.com>,
        Tony Luck <tony.luck@...el.com>,
        Arjan van de Veen <arjan@...ux.intel.com>,
        Eric Biederman <ebiederm@...ssion.com>,
        Ashok Raj <ashok.raj@...el.com>
Subject: Re: [patch v3 6/7] x86/smp: Split sending INIT IPI out into a
 helper function

On Tue, Jun 20 2023 at 11:29, Borislav Petkov wrote:
> On Thu, Jun 15, 2023 at 10:33:58PM +0200, Thomas Gleixner wrote:
>>  
>> -static int
>> -wakeup_secondary_cpu_via_init(int phys_apicid, unsigned long start_eip)
>> +static void send_init_sequence(int phys_apicid)
>>  {
>> -	unsigned long send_status = 0, accept_status = 0;
>> -	int maxlvt, num_starts, j;
>> -
>> -	maxlvt = lapic_get_maxlvt();
>> +	int maxlvt = lapic_get_maxlvt();
>
> Whoops:
>
> arch/x86/kernel/smpboot.c: In function ‘send_init_sequence’:
> arch/x86/kernel/smpboot.c:860:9: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
>   860 |         int maxlvt = lapic_get_maxlvt();
>       |         ^~~

How so? It's the first thing in the function, no?

And in the other hunk it's _before_ code too.

Conflict resolution artifact?

Thanks,

        tglx