linux-kernel - [PATCH 4/6] AMD IOMMU: honor iommu=off instead of amd

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Date:	Thu, 3 Jul 2008 19:35:09 +0200
From:	Joerg Roedel <joerg.roedel@....com>
To:	mingo@...hat.com, tglx@...utronix.de
CC:	linux-kernel@...r.kernel.org, iommu@...ts.linux-foundation.org,
	bhavna.sarathy@....com, robert.richter@....com,
	Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 4/6] AMD IOMMU: honor iommu=off instead of amd_iommu=off

This patch removes the amd_iommu=off kernel parameter and honors the generic
iommu=off parameter for the same purpose.

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 arch/x86/kernel/amd_iommu_init.c |    9 +--------
 1 files changed, 1 insertions(+), 8 deletions(-)

diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 5d9e45c..c54c823 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -101,8 +101,6 @@ struct ivmd_header {
 	u64 range_length;
 } __attribute__((packed));
 
-static int __initdata amd_iommu_disable;
-
 u16 amd_iommu_last_bdf;
 struct list_head amd_iommu_unity_map;
 unsigned amd_iommu_aperture_order = 26;
@@ -686,7 +684,7 @@ int __init amd_iommu_init(void)
 	int i, ret = 0;
 
 
-	if (amd_iommu_disable) {
+	if (no_iommu) {
 		printk(KERN_INFO "AMD IOMMU disabled by kernel command line\n");
 		return 0;
 	}
@@ -831,9 +829,6 @@ void __init amd_iommu_detect(void)
 	if (swiotlb || no_iommu || iommu_detected)
 		return;
 
-	if (amd_iommu_disable)
-		return;
-
 	if (acpi_table_parse("IVRS", early_amd_iommu_detect) == 0) {
 		iommu_detected = 1;
 #ifdef CONFIG_GART_IOMMU
@@ -846,8 +841,6 @@ void __init amd_iommu_detect(void)
 static int __init parse_amd_iommu_options(char *str)
 {
 	for (; *str; ++str) {
-		if (strcmp(str, "off") == 0)
-			amd_iommu_disable = 1;
 		if (strcmp(str, "isolate") == 0)
 			amd_iommu_isolate = 1;
 	}
-- 
1.5.3.7


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