Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750864AbVIKUoO (ORCPT ); Sun, 11 Sep 2005 16:44:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750866AbVIKUoO (ORCPT ); Sun, 11 Sep 2005 16:44:14 -0400 Received: from fmr15.intel.com ([192.55.52.69]:60604 "EHLO fmsfmr005.fm.intel.com") by vger.kernel.org with ESMTP id S1750862AbVIKUoN convert rfc822-to-8bit (ORCPT ); Sun, 11 Sep 2005 16:44:13 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Subject: RE: [2/3] Set compatibility flag for 4GB zone on IA64 Date: Sun, 11 Sep 2005 13:44:03 -0700 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [2/3] Set compatibility flag for 4GB zone on IA64 Thread-Index: AcW28ixppeNPHPf1S36N4mswlWfJyQAHvfhQ From: "Luck, Tony" To: , , "Greg Edwards" Cc: , X-OriginalArrivalTime: 11 Sep 2005 20:44:04.0287 (UTC) FILETIME=[8C1B8CF0:01C5B711] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1130 Lines: 39 >Set compatibility flag for 4GB zone on IA64 > >IA64 traditionally had a 4GB DMA32 zone. Set the compatibility flag >to keep old drivers working. > >For new drivers it would be better to use ZONE_DMA32 now. > >Signed-off-by: Andi Kleen >Cc: tony.luck@intel.com > >Index: linux/arch/ia64/Kconfig >=================================================================== >--- linux.orig/arch/ia64/Kconfig >+++ linux/arch/ia64/Kconfig >@@ -54,6 +54,10 @@ config IA64_UNCACHED_ALLOCATOR > bool > select GENERIC_ALLOCATOR > >+config ZONE_DMA_IS_DMA32 >+ bool >+ default y >+ > choice > prompt "System type" > default IA64_GENERIC > ia64 isn't all that homogeneous. SGI systems stuff *all* memory into the DMA zone as their I/O devices have no 32-bit limits (just as well really as there is no memory below 4G on an Altix!). What does this ZONE_DMA_IS_DMA32 thing do? -Tony - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/