From: David Mosberger <davidm@hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] 2.4.14 Missing asm clobbers
Date: Wed, 21 Nov 2001 01:37:16 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590698805538@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590698805537@msgid-missing>
Thanks for reporting on this. I'm certain some of asm need to be
fixed given not-so-recent compiler developments, though I'm not aware
of there being any real problems in this area at the moment. I'll
look into it next week.
--david
>>>>> On Wed, 21 Nov 2001 11:40:56 +1100, Keith Owens <kaos@ocs.com.au> said:
Keith> A comment of Linus's on l-k promoted me to check ia64 inline
Keith> asm for predicates. I was surprised to find what look like
Keith> missing asm clobbers. I am not 100% sure that these are
Keith> errors (gcc clobbers are a black art ;) so there is no patch.
Keith> include/asm-ia64/spinlock.h.
Keith> spin_lock() changes ar.ccv, p7 without a clobber (!NEW_LOCK
Keith> version). read_lock() changes p6 without a clobber.
Keith> write_lock() changes ar.ccv, p7 without a clobber.
Keith> arch/ia64/kernel/traps.c
Keith> fp_emulate() does ldf f10, f11 without a clobber.
Keith> arch/ia64/kernel/unaligned.c
Keith> invala_gr() and invala_fr() do invala without a "memory"
Keith> clobber. Not sure if it is necessary or not.
next prev parent reply other threads:[~2001-11-21 1:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-21 0:40 [Linux-ia64] 2.4.14 Missing asm clobbers Keith Owens
2001-11-21 1:37 ` David Mosberger [this message]
2001-11-26 23:12 ` David Mosberger
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