[RFCv2 06/38] x86/hyperlaunch: introduce pvh domain builder

["Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>]

Introduce dom_construct_pvh() as a wrapper around dom0_construct_pvh(). This
function will be expanded as dom0 specific construction functions are
generalized.

Signed-off-by: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
---
 xen/arch/x86/dom0_build.c                 |  5 ++--
 xen/arch/x86/hvm/Makefile                 |  1 +
 xen/arch/x86/hvm/dom_build.c              | 31 +++++++++++++++++++++++
 xen/arch/x86/include/asm/domain-builder.h |  8 ++++++
 xen/arch/x86/include/asm/setup.h          |  2 +-
 5 files changed, 44 insertions(+), 3 deletions(-)
 create mode 100644 xen/arch/x86/hvm/dom_build.c
 create mode 100644 xen/arch/x86/include/asm/domain-builder.h

diff --git a/xen/arch/x86/dom0_build.c b/xen/arch/x86/dom0_build.c
index 22d9ff3f1e8c..2cf6535ce190 100644
--- a/xen/arch/x86/dom0_build.c
+++ b/xen/arch/x86/dom0_build.c
@@ -15,6 +15,7 @@
 #include <asm/amd.h>
 #include <asm/bootinfo.h>
 #include <asm/dom0_build.h>
+#include <asm/domain-builder.h>
 #include <asm/guest.h>
 #include <asm/hpet.h>
 #include <asm/hvm/emulate.h>
@@ -613,7 +614,7 @@ int __init dom0_setup_permissions(struct domain *d)
     return rc;
 }
 
-int __init construct_dom0(const struct boot_domain *bd)
+int __init construct_dom0(struct boot_domain *bd)
 {
     int rc;
     const struct domain *d = bd->d;
@@ -637,7 +638,7 @@ int __init construct_dom0(const struct boot_domain *bd)
         opt_dom0_max_vcpus_max = bd->max_vcpus;
 
     if ( is_hvm_domain(d) )
-        rc = dom0_construct_pvh(bd);
+        rc = dom_construct_pvh(bd);
     else if ( is_pv_domain(d) )
         rc = dom0_construct_pv(bd);
     else
diff --git a/xen/arch/x86/hvm/Makefile b/xen/arch/x86/hvm/Makefile
index 6ec2c8f2db56..0830a5b2a56f 100644
--- a/xen/arch/x86/hvm/Makefile
+++ b/xen/arch/x86/hvm/Makefile
@@ -5,6 +5,7 @@ obj-y += viridian/
 obj-y += asid.o
 obj-y += dm.o
 obj-bin-y += dom0_build.init.o
+obj-bin-y += dom_build.init.o
 obj-y += domain.o
 obj-y += emulate.o
 obj-$(CONFIG_GRANT_TABLE) += grant_table.o
diff --git a/xen/arch/x86/hvm/dom_build.c b/xen/arch/x86/hvm/dom_build.c
new file mode 100644
index 000000000000..8546cfff1fbf
--- /dev/null
+++ b/xen/arch/x86/hvm/dom_build.c
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * hvm/dom_build.c
+ *
+ * Dom builder for PVH guest.
+ *
+ * Copyright (C) 2017 Citrix Systems R&D
+ * Copyright (C) 2025 Apertus Solutions, LLC
+ */
+
+#include <xen/init.h>
+
+#include <asm/bootinfo.h>
+#include <asm/dom0_build.h>
+
+int __init dom_construct_pvh(struct boot_domain *bd)
+{
+    printk(XENLOG_INFO "*** Building a PVH Dom%d ***\n", bd->domid);
+
+    return dom0_construct_pvh(bd);
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/arch/x86/include/asm/domain-builder.h 
b/xen/arch/x86/include/asm/domain-builder.h
new file mode 100644
index 000000000000..dd429fc9ff8b
--- /dev/null
+++ b/xen/arch/x86/include/asm/domain-builder.h
@@ -0,0 +1,8 @@
+#ifndef __XEN_X86_DOMBUILDER_H__
+#define __XEN_X86_DOMBUILDER_H__
+
+struct boot_domain;
+
+int dom_construct_pvh(struct boot_domain *bd);
+
+#endif
diff --git a/xen/arch/x86/include/asm/setup.h b/xen/arch/x86/include/asm/setup.h
index ac34c698551e..b517da6144de 100644
--- a/xen/arch/x86/include/asm/setup.h
+++ b/xen/arch/x86/include/asm/setup.h
@@ -27,7 +27,7 @@ void subarch_init_memory(void);
 void init_IRQ(void);
 
 struct boot_domain;
-int construct_dom0(const struct boot_domain *bd);
+int construct_dom0(struct boot_domain *bd);
 
 void setup_io_bitmap(struct domain *d);
 
-- 
2.30.2