iommu: rename iommu_dom0_strict and iommu_passthrough

To iommu_hwdom_strict and iommu_hwdom_passthrough which is more
descriptive of their usage. Also change their type from bool_t to
bool.

No functional change.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>

diff --git a/xen/arch/x86/x86_64/mm.c b/xen/arch/x86/x86_64/mm.c
index 606508c871edc2b26adae0947ea852409be1df88..90a648c956983c0d881871b81b0535f750e0126f 100644 (file)
--- a/xen/arch/x86/x86_64/mm.c
+++ b/xen/arch/x86/x86_64/mm.c
@@ -1426,7 +1426,8 @@ int memory_add(unsigned long spfn, unsigned long epfn, unsigned int pxm)
     if ( ret )
         goto destroy_m2p;
 
-    if ( iommu_enabled && !iommu_passthrough && !need_iommu(hardware_domain) )
+    if ( iommu_enabled && !iommu_hwdom_passthrough &&
+         !need_iommu(hardware_domain) )
     {
         for ( i = spfn; i < epfn; i++ )
             if ( iommu_map_page(hardware_domain, i, i, IOMMUF_readable|IOMMUF_writable) )

diff --git a/xen/drivers/passthrough/amd/iommu_init.c b/xen/drivers/passthrough/amd/iommu_init.c
index 474992a75a2a0e2ded39f8a29a85768d50b9c55c..15c10b0929e6920714347d64fa6710853757b9ff 100644 (file)
--- a/xen/drivers/passthrough/amd/iommu_init.c
+++ b/xen/drivers/passthrough/amd/iommu_init.c
@@ -1062,7 +1062,7 @@ static void __init amd_iommu_init_cleanup(void)
     radix_tree_destroy(&ivrs_maps, xfree);
 
     iommu_enabled = 0;
-    iommu_passthrough = 0;
+    iommu_hwdom_passthrough = false;
     iommu_intremap = 0;
     iommuv2_enabled = 0;
 }

diff --git a/xen/drivers/passthrough/amd/pci_amd_iommu.c b/xen/drivers/passthrough/amd/pci_amd_iommu.c
index 12d2695b89e568b4cbcd6c4876fc30e945c11d16..ab39e7500dce2fc57dd5c8fec24336e01267d335 100644 (file)
--- a/xen/drivers/passthrough/amd/pci_amd_iommu.c
+++ b/xen/drivers/passthrough/amd/pci_amd_iommu.c
@@ -121,7 +121,7 @@ static void amd_iommu_setup_domain_device(
     BUG_ON( !hd->arch.root_table || !hd->arch.paging_mode ||
             !iommu->dev_table.buffer );
 
-    if ( iommu_passthrough && is_hardware_domain(domain) )
+    if ( iommu_hwdom_passthrough && is_hardware_domain(domain) )
         valid = 0;
 
     if ( ats_enabled )
@@ -256,7 +256,7 @@ static void __hwdom_init amd_iommu_hwdom_init(struct domain *d)
     if ( allocate_domain_resources(dom_iommu(d)) )
         BUG();
 
-    if ( !iommu_passthrough && !need_iommu(d) )
+    if ( !iommu_hwdom_passthrough && !need_iommu(d) )
     {
         int rc = 0;
 

diff --git a/xen/drivers/passthrough/iommu.c b/xen/drivers/passthrough/iommu.c
index e917901976dbed5d8d2a47936948dc9bce0a14c5..8fef6db8af8b88dd68c10b5f647932765d53fedf 100644 (file)
--- a/xen/drivers/passthrough/iommu.c
+++ b/xen/drivers/passthrough/iommu.c
@@ -52,15 +52,16 @@ custom_param("iommu", parse_iommu_param);
 bool_t __initdata iommu_enable = 1;
 bool_t __read_mostly iommu_enabled;
 bool_t __read_mostly force_iommu;
-bool_t __hwdom_initdata iommu_dom0_strict;
 bool_t __read_mostly iommu_verbose;
 bool_t __read_mostly iommu_workaround_bios_bug;
 bool_t __read_mostly iommu_igfx = 1;
-bool_t __read_mostly iommu_passthrough;
 bool_t __read_mostly iommu_snoop = 1;
 bool_t __read_mostly iommu_qinval = 1;
 bool_t __read_mostly iommu_intremap = 1;
 
+bool __hwdom_initdata iommu_hwdom_strict;
+bool __read_mostly iommu_hwdom_passthrough;
+
 /*
  * In the current implementation of VT-d posted interrupts, in some extreme
  * cases, the per cpu list which saves the blocked vCPU will be very long,
@@ -121,9 +122,9 @@ static int __init parse_iommu_param(const char *s)
         else if ( !strncmp(s, "amd-iommu-perdev-intremap", ss - s) )
             amd_iommu_perdev_intremap = val;
         else if ( !strncmp(s, "dom0-passthrough", ss - s) )
-            iommu_passthrough = val;
+            iommu_hwdom_passthrough = val;
         else if ( !strncmp(s, "dom0-strict", ss - s) )
-            iommu_dom0_strict = val;
+            iommu_hwdom_strict = val;
         else if ( !strncmp(s, "sharept", ss - s) )
             iommu_hap_pt_share = val;
         else
@@ -158,10 +159,10 @@ static void __hwdom_init check_hwdom_reqs(struct domain *d)
 
     arch_iommu_check_autotranslated_hwdom(d);
 
-    if ( iommu_passthrough )
+    if ( iommu_hwdom_passthrough )
         panic("Dom0 uses paging translated mode, dom0-passthrough must not be enabled\n");
 
-    iommu_dom0_strict = 1;
+    iommu_hwdom_strict = true;
 }
 
 void __hwdom_init iommu_hwdom_init(struct domain *d)
@@ -174,7 +175,7 @@ void __hwdom_init iommu_hwdom_init(struct domain *d)
         return;
 
     register_keyhandler('o', &iommu_dump_p2m_table, "dump iommu p2m table", 0);
-    d->need_iommu = !!iommu_dom0_strict;
+    d->need_iommu = iommu_hwdom_strict;
     if ( need_iommu(d) && !iommu_use_hap_pt(d) )
     {
         struct page_info *page;
@@ -370,8 +371,8 @@ int __init iommu_setup(void)
     int rc = -ENODEV;
     bool_t force_intremap = force_iommu && iommu_intremap;
 
-    if ( iommu_dom0_strict )
-        iommu_passthrough = 0;
+    if ( iommu_hwdom_strict )
+        iommu_hwdom_passthrough = false;
 
     if ( iommu_enable )
     {
@@ -392,15 +393,15 @@ int __init iommu_setup(void)
     if ( !iommu_enabled )
     {
         iommu_snoop = 0;
-        iommu_passthrough = 0;
-        iommu_dom0_strict = 0;
+        iommu_hwdom_passthrough = false;
+        iommu_hwdom_strict = false;
     }
     printk("I/O virtualisation %sabled\n", iommu_enabled ? "en" : "dis");
     if ( iommu_enabled )
     {
         printk(" - Dom0 mode: %s\n",
-               iommu_passthrough ? "Passthrough" :
-               iommu_dom0_strict ? "Strict" : "Relaxed");
+               iommu_hwdom_passthrough ? "Passthrough" :
+               iommu_hwdom_strict ? "Strict" : "Relaxed");
         printk("Interrupt remapping %sabled\n", iommu_intremap ? "en" : "dis");
         tasklet_init(&iommu_pt_cleanup_tasklet, iommu_free_pagetables, 0);
     }

diff --git a/xen/drivers/passthrough/vtd/iommu.c b/xen/drivers/passthrough/vtd/iommu.c
index 8d768a46932192922c60424a4f8209e70a3d2737..89fa38228067e3c2a67a1ab66229371528451cf1 100644 (file)
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -1304,7 +1304,7 @@ static void __hwdom_init intel_iommu_hwdom_init(struct domain *d)
 {
     struct acpi_drhd_unit *drhd;
 
-    if ( !iommu_passthrough && is_pv_domain(d) )
+    if ( !iommu_hwdom_passthrough && is_pv_domain(d) )
     {
         /* Set up 1:1 page table for hardware domain. */
         vtd_set_hwdom_mapping(d);
@@ -1391,7 +1391,7 @@ int domain_context_mapping_one(
         return res;
     }
 
-    if ( iommu_passthrough && is_hardware_domain(domain) )
+    if ( iommu_hwdom_passthrough && is_hardware_domain(domain) )
     {
         context_set_translation_type(*context, CONTEXT_TT_PASS_THRU);
         agaw = level_to_agaw(iommu->nr_pt_levels);
@@ -1781,7 +1781,7 @@ static int __must_check intel_iommu_map_page(struct domain *d,
         return 0;
 
     /* Do nothing if hardware domain and iommu supports pass thru. */
-    if ( iommu_passthrough && is_hardware_domain(d) )
+    if ( iommu_hwdom_passthrough && is_hardware_domain(d) )
         return 0;
 
     spin_lock(&hd->arch.mapping_lock);
@@ -1826,7 +1826,7 @@ static int __must_check intel_iommu_unmap_page(struct domain *d,
                                                unsigned long gfn)
 {
     /* Do nothing if hardware domain and iommu supports pass thru. */
-    if ( iommu_passthrough && is_hardware_domain(d) )
+    if ( iommu_hwdom_passthrough && is_hardware_domain(d) )
         return 0;
 
     return dma_pte_clear_one(d, (paddr_t)gfn << PAGE_SHIFT_4K);
@@ -2269,8 +2269,8 @@ int __init intel_vtd_setup(void)
         if ( iommu_snoop && !ecap_snp_ctl(iommu->ecap) )
             iommu_snoop = 0;
 
-        if ( iommu_passthrough && !ecap_pass_thru(iommu->ecap) )
-            iommu_passthrough = 0;
+        if ( iommu_hwdom_passthrough && !ecap_pass_thru(iommu->ecap) )
+            iommu_hwdom_passthrough = false;
 
         if ( iommu_qinval && !ecap_queued_inval(iommu->ecap) )
             iommu_qinval = 0;
@@ -2308,7 +2308,7 @@ int __init intel_vtd_setup(void)
 
 #define P(p,s) printk("Intel VT-d %s %senabled.\n", s, (p)? "" : "not ")
     P(iommu_snoop, "Snoop Control");
-    P(iommu_passthrough, "Dom0 DMA Passthrough");
+    P(iommu_hwdom_passthrough, "Dom0 DMA Passthrough");
     P(iommu_qinval, "Queued Invalidation");
     P(iommu_intremap, "Interrupt Remapping");
     P(iommu_intpost, "Posted Interrupt");
@@ -2330,7 +2330,7 @@ int __init intel_vtd_setup(void)
  error:
     iommu_enabled = 0;
     iommu_snoop = 0;
-    iommu_passthrough = 0;
+    iommu_hwdom_passthrough = false;
     iommu_qinval = 0;
     iommu_intremap = 0;
     iommu_intpost = 0;

diff --git a/xen/drivers/passthrough/vtd/x86/vtd.c b/xen/drivers/passthrough/vtd/x86/vtd.c
index ac653eea0e5b7b48537aebb7139022f2770b023b..ef1a02cba69594206d2c129ca9026b09845c0036 100644 (file)
--- a/xen/drivers/passthrough/vtd/x86/vtd.c
+++ b/xen/drivers/passthrough/vtd/x86/vtd.c
@@ -103,7 +103,7 @@ void __hwdom_init vtd_set_hwdom_mapping(struct domain *d)
          * If dom0-strict mode is enabled then exclude conventional RAM
          * and let the common code map dom0's pages.
          */
-        if ( iommu_dom0_strict &&
+        if ( iommu_hwdom_strict &&
              page_is_ram_type(pfn, RAM_TYPE_CONVENTIONAL) )
             continue;
 

diff --git a/xen/include/xen/iommu.h b/xen/include/xen/iommu.h
index e35d941f3cb2efc07bd4c93080ed41ccf9fe47c0..392cf1e6b9076678744f5c4d908462aa274f7681 100644 (file)
--- a/xen/include/xen/iommu.h
+++ b/xen/include/xen/iommu.h
@@ -29,13 +29,15 @@
 #include <asm/iommu.h>
 
 extern bool_t iommu_enable, iommu_enabled;
-extern bool_t force_iommu, iommu_dom0_strict, iommu_verbose;
-extern bool_t iommu_workaround_bios_bug, iommu_igfx, iommu_passthrough;
+extern bool_t force_iommu, iommu_verbose;
+extern bool_t iommu_workaround_bios_bug, iommu_igfx;
 extern bool_t iommu_snoop, iommu_qinval, iommu_intremap, iommu_intpost;
 extern bool_t iommu_hap_pt_share;
 extern bool_t iommu_debug;
 extern bool_t amd_iommu_perdev_intremap;
 
+extern bool iommu_hwdom_strict, iommu_hwdom_passthrough;
+
 extern unsigned int iommu_dev_iotlb_timeout;
 
 int iommu_setup(void);