linux-kernel - [tip:x86/urgent] bootmem, x86: Fix 32bit numa system without RAM on node 0

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 1 Apr 2010 22:57:59 GMT
From:	tip-bot for Yinghai Lu <yinghai@...nel.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	yinghai@...nel.org, tglx@...utronix.de
Subject: [tip:x86/urgent] bootmem, x86: Fix 32bit numa system without RAM on node 0

Commit-ID:  aa235fc712f379d4194cff9217f07026c452c141
Gitweb:     http://git.kernel.org/tip/aa235fc712f379d4194cff9217f07026c452c141
Author:     Yinghai Lu <yinghai@...nel.org>
AuthorDate: Wed, 31 Mar 2010 20:45:27 -0700
Committer:  H. Peter Anvin <hpa@...or.com>
CommitDate: Thu, 1 Apr 2010 14:41:19 -0700

bootmem, x86: Fix 32bit numa system without RAM on node 0

When 32bit numa is used, free_all_bootmem() will still only go over with
node id 0.

If node 0 doesn't have RAM installed, the lowest populated node
becomes low RAM.

This one fixes BOOTMEM path by iterating over the bdata_list.

-v3: add more comments, and fix bootmem path too.
-v4: seperate from one big patch

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
LKML-Reference: <4BB416D7.6090203@...nel.org>
Signed-off-by: H. Peter Anvin <hpa@...or.com>
---
 mm/bootmem.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/mm/bootmem.c b/mm/bootmem.c
index 2058cb7..ba37d62 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -312,7 +312,13 @@ unsigned long __init free_all_bootmem(void)
 	 */
 	return free_all_memory_core_early(MAX_NUMNODES);
 #else
-	return free_all_bootmem_core(NODE_DATA(0)->bdata);
+	unsigned long total_pages = 0;
+	bootmem_data_t *bdata;
+
+	list_for_each_entry(bdata, &bdata_list, list)
+		total_pages += free_all_bootmem_core(bdata);
+
+	return total_pages;
 #endif
 }
 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/