linux-kernel - Re: linux-next: tip tree build warning

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Date:	Wed, 28 Oct 2009 18:41:26 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: tip tree build warning

Hi Ingo,

On Wed, 28 Oct 2009 08:31:45 +0100 Ingo Molnar <mingo@...e.hu> wrote:
>
> 
> That commit is very simple. Are you sure it's not GCC bogosity?

That commit just produces the warning (since it introduced the
apic_noop.c file) and probably has nothing directly to do with the
problem (as I said).

The relevant part of apic.h is:

static inline physid_mask_t default_apicid_to_cpu_present(int phys_apicid)
{
        return physid_mask_of_physid(phys_apicid);
}

Where physid_mask_of_physid() manipulates a physid_mask_t which contains
an array of unsigned longs that is BITS_TO_LONGS(MAX_APICS) long and
MAX_APICS is 32768.

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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