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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Olof Johansson <olof@austin.ibm.com>
Cc: linas@austin.ibm.com, paulus@au1.ibm.com,
	Paul Mackerras <paulus@samba.org>,
	linuxppc64-dev <linuxppc64-dev@lists.linuxppc.org>,
	Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] PPC64: lockfix for rtas error log
Date: Wed, 30 Jun 2004 14:02:17 -0500	[thread overview]
Message-ID: <1088622136.1921.51.camel@gaston> (raw)
In-Reply-To: <40E30E50.3040401@austin.ibm.com>


> Isn't the global buffer used since it's in BSS, and as such, in low 
> memory, guaranteed to be below 4GB? RTAS has limitations that restricts 
> any passed-in buffers to be addressable as 32-bit real mode pointers, right?

The global buffer is still used within the spinlocked region for RTAS itself,
the patch just uses a local buffer and copies into it from the global one
before releasing the lock.

Ben.



  reply	other threads:[~2004-06-30 19:06 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-06-29 22:50 [PATCH] PPC64: lockfix for rtas error log linas
2004-06-30  1:17 ` David Gibson
2004-06-30 16:58   ` linas
2004-06-30  1:44 ` Benjamin Herrenschmidt
2004-06-30 17:36   ` linas
2004-06-30 18:47     ` Benjamin Herrenschmidt
2004-06-30 19:02       ` Olof Johansson
2004-06-30 19:02         ` Benjamin Herrenschmidt [this message]
2004-06-30 20:31       ` [PATCH] 2.6 PPC64: lockfix for rtas error log (third-times-a-charm?) linas
2004-06-30 11:27 ` [PATCH] PPC64: lockfix for rtas error log Paul Mackerras
2004-06-30 17:50   ` linas
2004-06-30 23:07     ` Paul Mackerras
2004-07-01 16:31       ` Jake Moilanen

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