IOMMU: iommu_qinval is x86-only

In fact it's VT-d specific, but we don't have a way yet to build code
for just one vendor.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Paul Durrant <paul@xen.org>

xen/drivers/passthrough/iommu.c

@@ -33,7 +33,6 @@ bool_t __read_mostly force_iommu;
 bool_t __read_mostly iommu_verbose;
 bool __read_mostly iommu_quarantine = true;
 bool_t __read_mostly iommu_snoop = 1;
-bool_t __read_mostly iommu_qinval = 1;
 bool_t __read_mostly iommu_crash_disable;
 
 static bool __hwdom_initdata iommu_hwdom_none;
@@ -75,13 +74,13 @@ static int __init parse_iommu_param(const char *s)
 #ifdef CONFIG_X86
         else if ( (val = parse_boolean("igfx", s, ss)) >= 0 )
             iommu_igfx = val;
+        else if ( (val = parse_boolean("qinval", s, ss)) >= 0 )
+            iommu_qinval = val;
 #endif
         else if ( (val = parse_boolean("verbose", s, ss)) >= 0 )
             iommu_verbose = val;
         else if ( (val = parse_boolean("snoop", s, ss)) >= 0 )
             iommu_snoop = val;
-        else if ( (val = parse_boolean("qinval", s, ss)) >= 0 )
-            iommu_qinval = val;
 #ifndef iommu_intremap
         else if ( (val = parse_boolean("intremap", s, ss)) >= 0 )
             iommu_intremap = val ? iommu_intremap_full : iommu_intremap_off;

xen/drivers/passthrough/vtd/iommu.c

@@ -51,6 +51,7 @@ struct mapped_rmrr {
 bool __read_mostly untrusted_msi;
 
 bool __read_mostly iommu_igfx = true;
+bool __read_mostly iommu_qinval = true;
 
 int nr_iommus;
 

xen/include/xen/iommu.h

@@ -54,7 +54,7 @@ static inline bool_t dfn_eq(dfn_t x, dfn_t y)
 
 extern bool_t iommu_enable, iommu_enabled;
 extern bool force_iommu, iommu_quarantine, iommu_verbose;
-extern bool_t iommu_snoop, iommu_qinval;
+extern bool_t iommu_snoop;
 
 #ifdef CONFIG_X86
 extern enum __packed iommu_intremap {
@@ -70,7 +70,7 @@ extern enum __packed iommu_intremap {
    iommu_intremap_restricted,
    iommu_intremap_full,
 } iommu_intremap;
-extern bool iommu_igfx;
+extern bool iommu_igfx, iommu_qinval;
 #else
 # define iommu_intremap false
 #endif