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From: David Howells <dhowells@redhat.com>
In-Reply-To: <20100331210555.GA17715@flint.arm.linux.org.uk>
References: <20100331210555.GA17715@flint.arm.linux.org.uk> <20100325194100.GA2364@debian> <20100331134048.da4e35a7.akpm@linux-foundation.org> <4BB3B4DB.7040904@kernel.org>
To: Russell King <rmk@arm.linux.org.uk>
Cc: dhowells@redhat.com, Yinghai Lu <yinghai@kernel.org>,
       Andrew Morton <akpm@linux-foundation.org>, Rabin Vincent <rabin@rab.in>,
       lkml <linux-kernel@vger.kernel.org>, hpa@zytor.com,
       penberg@cs.helsinki.fi, cl@linux-foundation.org,
       Benjamin Herrenschmidt <benh@kernel.crashing.org>,
       linux-arch@vger.kernel.org
Subject: Re: start_kernel(): bug: interrupts were enabled early
Date: Wed, 31 Mar 2010 23:58:38 +0100
Message-ID: <19680.1270076318@redhat.com>
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Russell King <rmk@arm.linux.org.uk> wrote:

> We use the standard generic kernel implementation.  Is x86 different? ;)

The optimised fast paths used on x86 rwsems don't disable interrupts.

David