[RFCv2 07/38] x86/hyperlaunch: move initial hwdom setup to dom_construct_pvh

["Daniel P. Smith" <dpsmith@apertussolutions.com>]

Relocate the initial block of hwdom setup code from dom0_construct_pvh() over
to dom_construct_pvh().

No functional change.

Signed-off-by: Daniel P. Smith <dpsmith@apertussolutions.com>
---
 xen/arch/x86/hvm/dom0_build.c | 44 ------------------------------
 xen/arch/x86/hvm/dom_build.c  | 50 +++++++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+), 44 deletions(-)

diff --git a/xen/arch/x86/hvm/dom0_build.c b/xen/arch/x86/hvm/dom0_build.c
index 0664f0543fd6..4f2eb0f97aba 100644
--- a/xen/arch/x86/hvm/dom0_build.c
+++ b/xen/arch/x86/hvm/dom0_build.c
@@ -1311,56 +1311,12 @@ static int __init pvh_setup_acpi(struct domain *d, paddr_t start_info)
     return 0;
 }
 
-static void __hwdom_init pvh_setup_mmcfg(struct domain *d)
-{
-    unsigned int i;
-    int rc;
-
-    for ( i = 0; i < pci_mmcfg_config_num; i++ )
-    {
-        rc = register_vpci_mmcfg_handler(d, pci_mmcfg_config[i].address,
-                                         pci_mmcfg_config[i].start_bus_number,
-                                         pci_mmcfg_config[i].end_bus_number,
-                                         pci_mmcfg_config[i].pci_segment);
-        if ( rc )
-            printk("Unable to setup MMCFG handler at %#lx for segment %u\n",
-                   pci_mmcfg_config[i].address,
-                   pci_mmcfg_config[i].pci_segment);
-    }
-}
-
 int __init dom0_construct_pvh(const struct boot_domain *bd)
 {
     paddr_t entry, start_info;
     struct domain *d = bd->d;
     int rc;
 
-    printk(XENLOG_INFO "*** Building a PVH Dom%d ***\n", d->domain_id);
-
-    if ( bd->kernel == NULL )
-        panic("Missing kernel boot module for %pd construction\n", d);
-
-    if ( is_hardware_domain(d) )
-    {
-        /*
-         * MMCFG initialization must be performed before setting domain
-         * permissions, as the MCFG areas must not be part of the domain IOMEM
-         * accessible regions.
-         */
-        pvh_setup_mmcfg(d);
-
-        /*
-         * Setup permissions early so that calls to add MMIO regions to the
-         * p2m as part of vPCI setup don't fail due to permission checks.
-         */
-        rc = dom0_setup_permissions(d);
-        if ( rc )
-        {
-            printk("%pd unable to setup permissions: %d\n", d, rc);
-            return rc;
-        }
-    }
-
     /*
      * Craft dom0 physical memory map and set the paging allocation. This must
      * be done before the iommu initializion, since iommu initialization code
diff --git a/xen/arch/x86/hvm/dom_build.c b/xen/arch/x86/hvm/dom_build.c
index 8546cfff1fbf..a5f259b6352d 100644
--- a/xen/arch/x86/hvm/dom_build.c
+++ b/xen/arch/x86/hvm/dom_build.c
@@ -8,15 +8,65 @@
  * Copyright (C) 2025 Apertus Solutions, LLC
  */
 
+#include <xen/acpi.h>
 #include <xen/init.h>
+#include <xen/types.h>
+
+#include <acpi/actables.h>
 
 #include <asm/bootinfo.h>
 #include <asm/dom0_build.h>
+#include <asm/hvm/io.h>
+#include <asm/pci.h>
+
+static void __hwdom_init pvh_setup_mmcfg(struct domain *d)
+{
+    unsigned int i;
+    int rc;
+
+    for ( i = 0; i < pci_mmcfg_config_num; i++ )
+    {
+        rc = register_vpci_mmcfg_handler(d, pci_mmcfg_config[i].address,
+                                         pci_mmcfg_config[i].start_bus_number,
+                                         pci_mmcfg_config[i].end_bus_number,
+                                         pci_mmcfg_config[i].pci_segment);
+        if ( rc )
+            printk("Unable to setup MMCFG handler at %#lx for segment %u\n",
+                   pci_mmcfg_config[i].address,
+                   pci_mmcfg_config[i].pci_segment);
+    }
+}
 
 int __init dom_construct_pvh(struct boot_domain *bd)
 {
+    int rc;
+
     printk(XENLOG_INFO "*** Building a PVH Dom%d ***\n", bd->domid);
 
+    if ( bd->kernel == NULL )
+        panic("Missing kernel boot module for %pd construction\n", bd->d);
+
+    if ( is_hardware_domain(bd->d) )
+    {
+        /*
+         * MMCFG initialization must be performed before setting domain
+         * permissions, as the MCFG areas must not be part of the domain IOMEM
+         * accessible regions.
+         */
+        pvh_setup_mmcfg(bd->d);
+
+        /*
+         * Setup permissions early so that calls to add MMIO regions to the
+         * p2m as part of vPCI setup don't fail due to permission checks.
+         */
+        rc = dom0_setup_permissions(bd->d);
+        if ( rc )
+        {
+            printk("%pd unable to setup permissions: %d\n", bd->d, rc);
+            return rc;
+        }
+    }
+
     return dom0_construct_pvh(bd);
 }
 
-- 
2.30.2