From: "Jan Beulich" <JBeulich@novell.com>
To: "Ingo Molnar" <mingo@elte.hu>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Nick Piggin" <npiggin@suse.de>, <hpa@zytor.com>
Cc: <linux-kernel@vger.kernel.org>
Subject: uses of cmpxchg/xadd in spinlock.h and rwsem.h vs. CONFIG_M386
Date: Tue, 12 May 2009 16:19:00 +0100 [thread overview]
Message-ID: <4A09AF8402000078000007DC@vpn.id2.novell.com> (raw)
While looking at a completely different issue I happened to grep for uses of
xadd, and it would appear to me that there got uses added that would make
a M386-configured SMP kernel die on an actual i386.
Oh, for the rwsem case I see - it would use the RWSEM_GENERIC_SPINLOCK case
when selecting M386. But I see nothing similar for the ticket spinlocks - am
I overlooking something?
Jan
next reply other threads:[~2009-05-12 15:19 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-12 15:19 Jan Beulich [this message]
2009-05-12 15:37 ` Nick Piggin
2009-05-12 15:57 ` Alan Cox
2009-05-12 16:02 ` Peter Zijlstra
2009-05-12 15:51 ` H. Peter Anvin
2009-05-12 15:57 ` Nick Piggin
2009-05-12 16:04 ` H. Peter Anvin
2009-05-12 16:16 ` Jan Beulich
2009-05-12 16:18 ` Andreas Schwab
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