From: Roland Dreier <rdreier@cisco.com>
To: Andrew Morton <akpm@osdl.org>
Cc: Adrian Bunk <bunk@stusta.de>,
Tom Tucker <tom@opengridcomputing.com>,
Steve Wise <swise@opengridcomputing.com>,
Roland Dreier <rolandd@cisco.com>,
linux-kernel@vger.kernel.org, openib-general@openib.org,
"David S. Miller" <davem@davemloft.net>
Subject: Re: 2.6.18-rc5-mm1: drivers/infiniband/hw/amso1100/c2.c compile error
Date: Fri, 01 Sep 2006 13:54:04 -0700 [thread overview]
Message-ID: <adazmdjgvf7.fsf@cisco.com> (raw)
In-Reply-To: <20060901204343.GA4979@flint.arm.linux.org.uk> (Russell King's message of "Fri, 1 Sep 2006 21:43:43 +0100")
Russell> Sure, if you want a _non-atomic_ 64-bit write then that's
Russell> possible, but many 32-bit architectures can't do a 64-bit
Russell> atomic IO write and that isn't something they can "fix".
I agree completely. And going one step further: if an architecture
cannot implement a 64-bit write atomically, then the precise
serialization that is required is device-specific knowledge that
belongs in the device driver.
(For example, in the mthca case, the only serialization required is
that no writes go to the same page of MMIO space between the two
32-bit halves of the 64-bit write)
- R.
--
VGER BF report: H 0
next prev parent reply other threads:[~2006-09-01 20:54 UTC|newest]
Thread overview: 138+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-01 8:58 2.6.18-rc5-mm1 Andrew Morton
2006-09-01 9:53 ` 2.6.18-rc5-mm1 Manuel Lauss
2006-09-01 10:44 ` 2.6.18-rc5-mm1 Grant Wilson
2006-09-01 13:50 ` [-mm patch] drivers/md/Kconfig: fix BLOCK dependency Adrian Bunk
2006-09-01 14:15 ` David Howells
2006-09-01 14:26 ` Jens Axboe
2006-09-01 16:00 ` 2.6.18-rc5-mm1: drivers/infiniband/hw/amso1100/c2.c compile error Adrian Bunk
2006-09-01 17:13 ` Andrew Morton
2006-09-01 17:34 ` Roland Dreier
2006-09-01 18:23 ` Andrew Morton
2006-09-01 19:53 ` Roland Dreier
2006-09-01 20:04 ` Andrew Morton
2006-09-01 20:20 ` Tom Tucker
2006-09-01 20:43 ` Russell King
2006-09-01 20:54 ` Roland Dreier [this message]
2006-09-01 21:01 ` [openib-general] " Bryan O'Sullivan
2006-09-01 20:59 ` Andrew Morton
2006-09-01 21:05 ` Roland Dreier
2006-09-01 21:26 ` Andrew Morton
2006-09-01 22:42 ` Roland Dreier
2006-09-01 20:51 ` Roland Dreier
2006-09-01 21:03 ` Andrew Morton
2006-09-01 20:45 ` [openib-general] " Bryan O'Sullivan
2006-09-01 20:59 ` Roland Dreier
2006-09-01 21:03 ` Bryan O'Sullivan
2006-09-01 16:40 ` 2.6.18-rc5-mm1 Maciej Rutecki
2006-09-05 16:16 ` 2.6.18-rc5-mm1 Bjorn Helgaas
2006-09-06 16:55 ` 2.6.18-rc5-mm1 Maciej Rutecki
2006-09-07 3:08 ` 2.6.18-rc5-mm1 Andrew Morton
2006-09-07 17:33 ` 2.6.18-rc5-mm1 keith mannthey
2006-09-01 19:58 ` [-mm patch] fs/reiser4/: possible cleanups Adrian Bunk
2006-09-01 23:13 ` 2.6.18-rc5-mm1 (IDE resume regression) Rafael J. Wysocki
2006-09-02 0:08 ` Andrew Morton
2006-09-02 1:00 ` 2.6.18-rc5-mm1 Matthias Hentges
2006-09-02 1:30 ` 2.6.18-rc5-mm1 Andrew Morton
[not found] ` <44F93EB3.8050500@goop.org>
2006-09-02 8:37 ` 2.6.18-rc5-mm1 Jeremy Fitzhardinge
2006-09-02 8:44 ` 2.6.18-rc5-mm1 Greg KH
2006-09-02 8:47 ` 2.6.18-rc5-mm1 Jeremy Fitzhardinge
2006-09-02 8:52 ` 2.6.18-rc5-mm1 Greg KH
2006-09-02 9:36 ` 2.6.18-rc5-mm1 Jeremy Fitzhardinge
2006-09-02 9:38 ` 2.6.18-rc5-mm1 Jeff Garzik
2006-09-02 9:47 ` 2.6.18-rc5-mm1 Jeremy Fitzhardinge
2006-09-02 9:56 ` 2.6.18-rc5-mm1 Jeremy Fitzhardinge
2006-09-09 23:47 ` 2.6.18-rc5-mm1 Jeremy Fitzhardinge
2006-09-10 16:24 ` 2.6.18-rc5-mm1 Matthias Hentges
2006-09-02 1:06 ` 2.6.18-rc5-mm1 Grant Coady
2006-09-02 1:12 ` 2.6.18-rc5-mm1 Dmitry Torokhov
2006-09-02 1:33 ` 2.6.18-rc5-mm1 Dmitry Torokhov
2006-09-02 2:10 ` 2.6.18-rc5-mm1 Grant Coady
2006-09-02 1:39 ` 2.6.18-rc5-mm1 Andrew Morton
2006-09-02 3:51 ` 2.6.18-rc5-mm1 Grant Coady
2006-09-02 20:20 ` 2.6.18-rc5-mm1 Grant Coady
2006-09-02 20:38 ` "VGER BF report:.." ? Matti Aarnio
2006-09-03 15:06 ` Jan Engelhardt
2006-09-03 19:59 ` Grant Coady
2006-09-02 9:05 ` 2.6.18-rc5-mm1 Philippe Gramoullé
2006-09-02 11:40 ` 2.6.18-rc5-mm1 Stefan Richter
2006-09-02 11:51 ` 2.6.18-rc5-mm1 Philippe Gramoullé
2006-09-03 9:09 ` [2.6.18-rc5-mm1 ACPI] Unknown exception code: 0xFFFFFFEA Mike Galbraith
2006-09-05 16:18 ` Bjorn Helgaas
2006-09-03 17:25 ` 2.6.18-rc5-mm1: sysfs_init() related compile error Adrian Bunk
2006-09-03 22:17 ` 2.6.18-rc5-mm1: MMU=n " Adrian Bunk
2006-09-04 7:44 ` Peter Zijlstra
2006-09-04 15:44 ` Adrian Bunk
2006-09-03 23:34 ` Lost DVD-RW [Was Re: 2.6.18-rc5-mm1] J.A. Magallón
2006-09-04 1:12 ` Andrew Morton
2006-09-04 2:42 ` Tejun Heo
2006-09-04 22:26 ` J.A. Magallón
2006-09-07 9:34 ` Tejun Heo
2006-09-07 11:13 ` J.A. Magallón
2006-09-07 11:32 ` [PATCH libata-dev#upstream-fixes] libata: ignore CFA signature while sanity-checking an ATAPI device Tejun Heo
2006-09-07 20:27 ` Andrew Morton
2006-09-07 21:03 ` Jeff Garzik
2006-09-08 7:56 ` Tejun Heo
2006-09-09 14:46 ` Lost DVD-RW [Was Re: 2.6.18-rc5-mm1] Alan Cox
2006-09-04 11:41 ` 2.6.18-rc5-mm1: is_init() parisc compile error Adrian Bunk
2006-09-04 13:48 ` [parisc-linux] " Matthew Wilcox
2006-09-04 18:24 ` [PATCH] Fix conflict with the is_init identifier on parisc Eric W. Biederman
2006-09-04 18:41 ` Adrian Bunk
2006-09-04 19:18 ` Andrew Morton
2006-09-04 17:03 ` [-mm patch] drivers/infiniband/hw/amso1100/: possible cleanups Adrian Bunk
2006-09-04 17:03 ` [-mm patch] make fs/lockd/host.c:nlm_lookup_host() static Adrian Bunk
2006-09-04 17:04 ` 2.6.18-rc5-mm1: ARCH_DISCONTIGMEM_ENABLE=y, SMP=n compile error Adrian Bunk
2006-09-04 19:04 ` Andrew Morton
2006-09-04 19:24 ` Adrian Bunk
2006-09-04 17:04 ` [-mm patch] fix kernel_execve() related compile errors Adrian Bunk
2006-09-04 17:04 ` [-mm patch] lib/ioremap.c must #include <linux/mm.h> Adrian Bunk
2006-09-04 18:41 ` [-mm patch] mm/memory_hotplug.c must #include <linux/cpuset.h> Adrian Bunk
2006-09-04 22:17 ` [-mm patch] arch/m68knommu/kernel/sys_m68k.c must #include <asm/unistd.h> Adrian Bunk
2006-09-05 13:03 ` lockdep oddity Heiko Carstens
2006-09-05 18:12 ` Ingo Molnar
2006-09-05 18:57 ` Hua Zhong
2006-09-05 18:52 ` Ingo Molnar
2006-09-05 19:08 ` Ingo Molnar
2006-09-05 19:37 ` Ingo Molnar
2006-09-06 6:54 ` Heiko Carstens
2006-09-06 10:05 ` Ingo Molnar
2006-09-06 7:20 ` Heiko Carstens
2006-09-06 7:47 ` Andrew Morton
2006-09-06 8:01 ` Heiko Carstens
2006-09-06 8:23 ` Hua Zhong
2006-09-06 8:40 ` Ingo Molnar
2006-09-06 14:19 ` Daniel Walker
2006-09-06 14:29 ` Heiko Carstens
2006-09-06 14:34 ` Daniel Walker
2006-09-05 20:07 ` Daniel Walker
2006-09-06 7:18 ` Heiko Carstens
2006-09-06 11:58 ` Heiko Carstens
2006-09-05 13:25 ` 2.6.18-rc5-mm1: {dis,en}able_irq_lockdep_irqrestore compile error Adrian Bunk
2006-09-05 15:21 ` [PATCH] FRV: Fix " David Howells
2006-09-06 12:50 ` Ingo Molnar
2006-09-05 15:27 ` [PATCH] NOMMU: Move the fallback arch_vma_name() to a sensible place David Howells
2006-09-05 15:29 ` [PATCH] NOMMU: Provide page_mkclean() for NOMMU David Howells
2006-09-05 15:31 ` [PATCH] NOMMU: Make lib/ioremap.c conditional David Howells
2006-09-05 15:35 ` [PATCH] FRV: do_gettimeofday() should no longer use tickadj David Howells
2006-09-06 1:46 ` john stultz
2006-09-06 9:27 ` David Howells
2006-09-06 9:43 ` Ingo Molnar
2006-09-06 12:30 ` David Howells
2006-09-06 12:56 ` Ingo Molnar
2006-09-06 14:46 ` David Howells
2006-09-06 23:01 ` Benjamin Herrenschmidt
2006-09-07 9:55 ` David Howells
2006-09-07 10:26 ` Ingo Molnar
2006-09-07 13:34 ` David Howells
2006-09-07 22:53 ` Benjamin Herrenschmidt
2006-09-08 10:25 ` David Howells
2006-09-08 11:05 ` Benjamin Herrenschmidt
2006-09-08 12:24 ` David Howells
2006-09-08 12:29 ` David Howells
2006-09-11 4:06 ` Benjamin Herrenschmidt
2006-09-09 5:46 ` Ingo Molnar
2006-09-11 10:46 ` David Howells
2006-09-05 16:00 ` 2.6.18-rc5-mm1 dependency on curses devel still there Steve Fox
2006-09-06 23:06 ` [-mm patch] ATA_JMICRON: remove the superfluous ATA dependency Adrian Bunk
2006-09-06 23:07 ` [-mm patch] ACPI_SONY shouldn't default m Adrian Bunk
2006-09-07 3:30 ` Andrew Morton
2006-09-07 4:41 ` Randy.Dunlap
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