x86/amd-iommu: Remove support for domain sharing

This patch makes device isolation mandatory and removes
support for the amd_iommu=share option. This simplifies the
code in several places.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

1 files changed, 0 insertions, 17 deletions

diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index fbe4c3c02a9..fe1686f6f91 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -125,13 +125,6 @@ u16 amd_iommu_last_bdf;			/* largest PCI device id we have
                                            to handle */
 LIST_HEAD(amd_iommu_unity_map);         /* a list of required unity mappings
                                            we find in ACPI */
-#ifdef CONFIG_IOMMU_STRESS
-bool amd_iommu_isolate = false;
-#else
-bool amd_iommu_isolate = true;          /* if true, device isolation is
-                                           enabled */
-#endif
-
 bool amd_iommu_unmap_flush;             /* if true, flush on every unmap */
 
 LIST_HEAD(amd_iommu_list);              /* list of all AMD IOMMUs in the
@@ -1308,12 +1301,6 @@ static int __init amd_iommu_init(void)
         if (iommu_pass_through)
                 goto out;
 
-        printk(KERN_INFO "AMD-Vi: device isolation ");
-        if (amd_iommu_isolate)
-                printk("enabled\n");
-        else
-                printk("disabled\n");
-
         if (amd_iommu_unmap_flush)
                 printk(KERN_INFO "AMD-Vi: IO/TLB flush on unmap enabled\n");
         else
@@ -1387,10 +1374,6 @@ static int __init parse_amd_iommu_dump(char *str)
 static int __init parse_amd_iommu_options(char *str)
 {
         for (; *str; ++str) {
-                if (strncmp(str, "isolate", 7) == 0)
-                        amd_iommu_isolate = true;
-                if (strncmp(str, "share", 5) == 0)
-                        amd_iommu_isolate = false;
                 if (strncmp(str, "fullflush", 9) == 0)
                         amd_iommu_unmap_flush = true;
         }