The number of IOMMUs supported should be the same as the number of IO APICS.
This limit comes into play when the IOMMUs are identity mapped, thus the
number of possible IOMMUs in the "static identity" (si) domain should be
this same number.
Signed-off-by: Mike Travis <[email protected]>
Signed-off-by: Jack Steiner <[email protected]>
---
drivers/iommu/intel-iommu.c | 25 +++++++++++++------------
1 file changed, 13 insertions(+), 12 deletions(-)
--- linux.orig/drivers/iommu/intel-iommu.c
+++ linux/drivers/iommu/intel-iommu.c
@@ -357,7 +357,8 @@ static int hw_pass_through = 1;
struct dmar_domain {
int id; /* domain id */
int nid; /* node id */
- unsigned long iommu_bmp; /* bitmap of iommus this domain uses*/
+ DECLARE_BITMAP(iommu_bmp, MAX_IO_APICS);
+ /* bitmap of iommus this domain uses*/
struct list_head devices; /* all devices' list */
struct iova_domain iovad; /* iova's that belong to this domain */
@@ -569,7 +570,7 @@ static struct intel_iommu *domain_get_io
BUG_ON(domain->flags & DOMAIN_FLAG_VIRTUAL_MACHINE);
BUG_ON(domain->flags & DOMAIN_FLAG_STATIC_IDENTITY);
- iommu_id = find_first_bit(&domain->iommu_bmp, g_num_of_iommus);
+ iommu_id = find_first_bit(domain->iommu_bmp, g_num_of_iommus);
if (iommu_id < 0 || iommu_id >= g_num_of_iommus)
return NULL;
@@ -582,7 +583,7 @@ static void domain_update_iommu_coherenc
domain->iommu_coherency = 1;
- for_each_set_bit(i, &domain->iommu_bmp, g_num_of_iommus) {
+ for_each_set_bit(i, domain->iommu_bmp, g_num_of_iommus) {
if (!ecap_coherent(g_iommus[i]->ecap)) {
domain->iommu_coherency = 0;
break;
@@ -596,7 +597,7 @@ static void domain_update_iommu_snooping
domain->iommu_snooping = 1;
- for_each_set_bit(i, &domain->iommu_bmp, g_num_of_iommus) {
+ for_each_set_bit(i, domain->iommu_bmp, g_num_of_iommus) {
if (!ecap_sc_support(g_iommus[i]->ecap)) {
domain->iommu_snooping = 0;
break;
@@ -1332,7 +1333,7 @@ static struct dmar_domain *alloc_domain(
return NULL;
domain->nid = -1;
- memset(&domain->iommu_bmp, 0, sizeof(unsigned long));
+ memset(domain->iommu_bmp, 0, sizeof(domain->iommu_bmp));
domain->flags = 0;
return domain;
@@ -1358,7 +1359,7 @@ static int iommu_attach_domain(struct dm
domain->id = num;
set_bit(num, iommu->domain_ids);
- set_bit(iommu->seq_id, &domain->iommu_bmp);
+ set_bit(iommu->seq_id, domain->iommu_bmp);
iommu->domains[num] = domain;
spin_unlock_irqrestore(&iommu->lock, flags);
@@ -1383,7 +1384,7 @@ static void iommu_detach_domain(struct d
if (found) {
clear_bit(num, iommu->domain_ids);
- clear_bit(iommu->seq_id, &domain->iommu_bmp);
+ clear_bit(iommu->seq_id, domain->iommu_bmp);
iommu->domains[num] = NULL;
}
spin_unlock_irqrestore(&iommu->lock, flags);
@@ -1525,7 +1526,7 @@ static void domain_exit(struct dmar_doma
dma_pte_free_pagetable(domain, 0, DOMAIN_MAX_PFN(domain->gaw));
for_each_active_iommu(iommu, drhd)
- if (test_bit(iommu->seq_id, &domain->iommu_bmp))
+ if (test_bit(iommu->seq_id, domain->iommu_bmp))
iommu_detach_domain(domain, iommu);
free_domain_mem(domain);
@@ -1651,7 +1652,7 @@ static int domain_context_mapping_one(st
spin_unlock_irqrestore(&iommu->lock, flags);
spin_lock_irqsave(&domain->iommu_lock, flags);
- if (!test_and_set_bit(iommu->seq_id, &domain->iommu_bmp)) {
+ if (!test_and_set_bit(iommu->seq_id, domain->iommu_bmp)) {
domain->iommu_count++;
if (domain->iommu_count == 1)
domain->nid = iommu->node;
@@ -3746,7 +3747,7 @@ static void domain_remove_one_dev_info(s
if (found == 0) {
unsigned long tmp_flags;
spin_lock_irqsave(&domain->iommu_lock, tmp_flags);
- clear_bit(iommu->seq_id, &domain->iommu_bmp);
+ clear_bit(iommu->seq_id, domain->iommu_bmp);
domain->iommu_count--;
domain_update_iommu_cap(domain);
spin_unlock_irqrestore(&domain->iommu_lock, tmp_flags);
@@ -3788,7 +3789,7 @@ static void vm_domain_remove_all_dev_inf
*/
spin_lock_irqsave(&domain->iommu_lock, flags2);
if (test_and_clear_bit(iommu->seq_id,
- &domain->iommu_bmp)) {
+ domain->iommu_bmp)) {
domain->iommu_count--;
domain_update_iommu_cap(domain);
}
@@ -3813,7 +3814,7 @@ static struct dmar_domain *iommu_alloc_v
domain->id = vm_domid++;
domain->nid = -1;
- memset(&domain->iommu_bmp, 0, sizeof(unsigned long));
+ memset(domain->iommu_bmp, 0, sizeof(domain->iommu_bmp));
domain->flags = DOMAIN_FLAG_VIRTUAL_MACHINE;
return domain;
--