linux-kernel - [2.6.22 patch 4/4] x86_64: fix fake numa for machines with true srat

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] [day] [month] [year] [list]

Date:	Mon, 7 May 2007 07:28:24 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Andi Kleen <ak@...e.de>
cc:	linux-kernel@...r.kernel.org
Subject: [2.6.22 patch 4/4] x86_64: fix fake numa for machines with true srat

Use the newly exported disable_srat() function to disable all SRAT 
detected values before registering emulated node active regions or calling
setup_node_bootmem().  This ensures we are correctly srat_disabled() since
we never call acpi_scan_nodes() in the emulated case, even on true SRAT 
machines.

Signed-off-by: David Rientjes <rientjes@...gle.com>
---
 arch/x86_64/mm/numa.c |    7 +------
 1 files changed, 1 insertions(+), 6 deletions(-)

diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c
--- a/arch/x86_64/mm/numa.c
+++ b/arch/x86_64/mm/numa.c
@@ -463,6 +463,7 @@ done:
 		}
 	}
 out:
+	disable_srat();
 	memnode_shift = compute_hash_shift(nodes, num_nodes);
 	if (memnode_shift < 0) {
 		memnode_shift = 0;
@@ -470,12 +471,6 @@ out:
 		       "disabled.\n");
 		return -1;
 	}
-
-	/*
-	 * We need to vacate all active ranges that may have been registered by
-	 * SRAT.
-	 */
-	remove_all_active_ranges();
 	for_each_node_mask(i, node_possible_map) {
 		e820_register_active_regions(i, nodes[i].start >> PAGE_SHIFT,
 						nodes[i].end >> PAGE_SHIFT);
-
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/