amd-iommu: remove amd_iommu_size kernel parameter
This parameter is not longer necessary when aperture increases
dynamically.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index d129d8f..31d56c3 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -939,17 +939,10 @@
* It also intializes the page table and the address allocator data
* structures required for the dma_ops interface
*/
-static struct dma_ops_domain *dma_ops_domain_alloc(struct amd_iommu *iommu,
- unsigned order)
+static struct dma_ops_domain *dma_ops_domain_alloc(struct amd_iommu *iommu)
{
struct dma_ops_domain *dma_dom;
- /*
- * Currently the DMA aperture must be between 32 MB and 1GB in size
- */
- if ((order < 25) || (order > 30))
- return NULL;
-
dma_dom = kzalloc(sizeof(struct dma_ops_domain), GFP_KERNEL);
if (!dma_dom)
return NULL;
@@ -1087,7 +1080,6 @@
struct protection_domain *domain;
struct dma_ops_domain *dma_domain;
struct amd_iommu *iommu;
- int order = amd_iommu_aperture_order;
unsigned long flags;
if (devid > amd_iommu_last_bdf)
@@ -1126,7 +1118,7 @@
dma_domain = find_protection_domain(devid);
if (dma_domain)
goto out;
- dma_domain = dma_ops_domain_alloc(iommu, order);
+ dma_domain = dma_ops_domain_alloc(iommu);
if (!dma_domain)
goto out;
dma_domain->target_dev = devid;
@@ -1826,7 +1818,6 @@
struct pci_dev *dev = NULL;
struct dma_ops_domain *dma_dom;
struct amd_iommu *iommu;
- int order = amd_iommu_aperture_order;
u16 devid;
while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
@@ -1839,7 +1830,7 @@
iommu = amd_iommu_rlookup_table[devid];
if (!iommu)
continue;
- dma_dom = dma_ops_domain_alloc(iommu, order);
+ dma_dom = dma_ops_domain_alloc(iommu);
if (!dma_dom)
continue;
init_unity_mappings_for_device(dma_dom, devid);
@@ -1865,7 +1856,6 @@
int __init amd_iommu_init_dma_ops(void)
{
struct amd_iommu *iommu;
- int order = amd_iommu_aperture_order;
int ret;
/*
@@ -1874,7 +1864,7 @@
* protection domain will be assigned to the default one.
*/
list_for_each_entry(iommu, &amd_iommu_list, list) {
- iommu->default_dom = dma_ops_domain_alloc(iommu, order);
+ iommu->default_dom = dma_ops_domain_alloc(iommu);
if (iommu->default_dom == NULL)
return -ENOMEM;
iommu->default_dom->domain.flags |= PD_DEFAULT_MASK;
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 8c0be09..762a4ee 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -121,7 +121,6 @@
to handle */
LIST_HEAD(amd_iommu_unity_map); /* a list of required unity mappings
we find in ACPI */
-unsigned amd_iommu_aperture_order = 26; /* size of aperture in power of 2 */
bool amd_iommu_isolate = true; /* if true, device isolation is
enabled */
bool amd_iommu_unmap_flush; /* if true, flush on every unmap */
@@ -1137,9 +1136,6 @@
enable_iommus();
- printk(KERN_INFO "AMD IOMMU: aperture size is %d MB\n",
- (1 << (amd_iommu_aperture_order-20)));
-
printk(KERN_INFO "AMD IOMMU: device isolation ");
if (amd_iommu_isolate)
printk("enabled\n");
@@ -1225,15 +1221,4 @@
return 1;
}
-static int __init parse_amd_iommu_size_options(char *str)
-{
- unsigned order = PAGE_SHIFT + get_order(memparse(str, &str));
-
- if ((order > 24) && (order < 31))
- amd_iommu_aperture_order = order;
-
- return 1;
-}
-
__setup("amd_iommu=", parse_amd_iommu_options);
-__setup("amd_iommu_size=", parse_amd_iommu_size_options);