From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: LKML <linux-kernel@vger.kernel.org>,
Rusty Russell <rusty@rustcorp.com.au>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Yasunori Goto <y-goto@jp.fujitsu.com>,
Christoph Lameter <clameter@sgi.com>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH 3 of 4] sparsemem: reduce i386 PAE section size
Date: Thu, 27 Mar 2008 17:28:39 -0700 [thread overview]
Message-ID: <b7d0773c79887ca98d6c.1206664119@localhost> (raw)
In-Reply-To: <patchbomb.1206664116@localhost>
A 1G section size makes memory hotplug too coarse in a virtual
environment. Retuce it by a factor of 2 to 512M. I would have liked
to make it smaller, but it runs out of reserved flags in the page flags.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
---
include/asm-x86/sparsemem.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/asm-x86/sparsemem.h b/include/asm-x86/sparsemem.h
--- a/include/asm-x86/sparsemem.h
+++ b/include/asm-x86/sparsemem.h
@@ -16,7 +16,7 @@
#ifdef CONFIG_X86_32
# ifdef CONFIG_X86_PAE
-# define SECTION_SIZE_BITS 30
+# define SECTION_SIZE_BITS 29
# define MAX_PHYSADDR_BITS 36
# define MAX_PHYSMEM_BITS 36
# else
next prev parent reply other threads:[~2008-03-28 1:10 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-28 0:28 [PATCH 0 of 4] [RFC] hotplug memory: minor updates Jeremy Fitzhardinge
2008-03-28 0:28 ` [PATCH 1 of 4] hotplug-memory: add add_memory_resource Jeremy Fitzhardinge
2008-03-28 0:28 ` [PATCH 2 of 4] hotplug-memory: adding non-section-aligned memory is bad Jeremy Fitzhardinge
2008-03-28 1:27 ` KAMEZAWA Hiroyuki
2008-03-28 1:34 ` Yasunori Goto
2008-03-28 1:54 ` KAMEZAWA Hiroyuki
2008-03-28 2:13 ` Jeremy Fitzhardinge
2008-03-28 2:33 ` KAMEZAWA Hiroyuki
2008-03-28 2:51 ` Jeremy Fitzhardinge
2008-03-28 3:17 ` KAMEZAWA Hiroyuki
2008-03-28 4:20 ` Jeremy Fitzhardinge
2008-03-28 4:39 ` KAMEZAWA Hiroyuki
2008-03-28 18:19 ` Jeremy Fitzhardinge
2008-03-28 18:27 ` Dave Hansen
2008-03-28 3:21 ` Yasunori Goto
2008-03-28 4:07 ` Jeremy Fitzhardinge
2008-03-28 21:30 ` Jeremy Fitzhardinge
2008-03-28 0:28 ` Jeremy Fitzhardinge [this message]
2008-03-28 0:35 ` [PATCH 3 of 4] sparsemem: reduce i386 PAE section size Christoph Lameter
2008-03-28 2:26 ` Jeremy Fitzhardinge
2008-03-28 2:27 ` Christoph Lameter
2008-03-28 6:18 ` Jeremy Fitzhardinge
2008-03-28 16:43 ` Dave Hansen
2008-03-28 18:05 ` Jeremy Fitzhardinge
2008-03-28 16:45 ` Dave Hansen
2008-03-28 0:28 ` [PATCH 4 of 4] paravirt_ops: don't steal memory resources in paravirt_disable_iospace Jeremy Fitzhardinge
2008-03-28 2:41 ` Rusty Russell
2008-03-28 9:12 ` [PATCH 0 of 4] [RFC] hotplug memory: minor updates Ingo Molnar
2008-03-28 16:07 ` Jeremy Fitzhardinge
2008-03-28 22:04 ` Ingo Molnar
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