[PATCH v4 42/44] x86/boot: convert construct_dom0 to struct boot_domain

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

A struct boot_domain now encapsulates the domain reference, kernel, ramdisk,
and command line for the domain being constructed. As a result of this
encapsulation, construct_dom0 can now take a single struct boot_domain instead
of these four parameters.

Signed-off-by: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
---
 xen/arch/x86/dom0_build.c        | 19 +++++++++----------
 xen/arch/x86/include/asm/setup.h |  4 +---
 xen/arch/x86/setup.c             |  2 +-
 3 files changed, 11 insertions(+), 14 deletions(-)

diff --git a/xen/arch/x86/dom0_build.c b/xen/arch/x86/dom0_build.c
index 71b2e3afc1a1..e552f2e9abef 100644
--- a/xen/arch/x86/dom0_build.c
+++ b/xen/arch/x86/dom0_build.c
@@ -597,22 +597,21 @@ int __init dom0_setup_permissions(struct domain *d)
     return rc;
 }
 
-int __init construct_dom0(struct domain *d, const struct boot_module *image,
-                          struct boot_module *initrd, const char *cmdline)
+int __init construct_dom0(struct boot_domain *bd)
 {
     int rc;
 
     /* Sanity! */
-    BUG_ON(!pv_shim && d->domain_id != 0);
-    BUG_ON(d->vcpu[0] == NULL);
-    BUG_ON(d->vcpu[0]->is_initialised);
+    BUG_ON(!pv_shim && bd->d->domain_id != 0);
+    BUG_ON(bd->d->vcpu[0] == NULL);
+    BUG_ON(bd->d->vcpu[0]->is_initialised);
 
     process_pending_softirqs();
 
-    if ( is_hvm_domain(d) )
-        rc = dom0_construct_pvh(d, image, initrd, cmdline);
-    else if ( is_pv_domain(d) )
-        rc = dom0_construct_pv(d, image, initrd, cmdline);
+    if ( is_hvm_domain(bd->d) )
+        rc = dom0_construct_pvh(bd->d, bd->kernel, bd->ramdisk, bd->cmdline);
+    else if ( is_pv_domain(bd->d) )
+        rc = dom0_construct_pv(bd->d, bd->kernel, bd->ramdisk, bd->cmdline);
     else
         panic("Cannot construct Dom0. No guest interface available\n");
 
@@ -620,7 +619,7 @@ int __init construct_dom0(struct domain *d, const struct 
boot_module *image,
         return rc;
 
     /* Sanity! */
-    BUG_ON(!d->vcpu[0]->is_initialised);
+    BUG_ON(!bd->d->vcpu[0]->is_initialised);
 
     return 0;
 }
diff --git a/xen/arch/x86/include/asm/setup.h b/xen/arch/x86/include/asm/setup.h
index 19e2ad95b523..8f54b429b954 100644
--- a/xen/arch/x86/include/asm/setup.h
+++ b/xen/arch/x86/include/asm/setup.h
@@ -26,9 +26,7 @@ void subarch_init_memory(void);
 
 void init_IRQ(void);
 
-int construct_dom0(
-    struct domain *d, const struct boot_module *image,
-    struct boot_module *initrd, const char *cmdline);
+int construct_dom0(struct boot_domain *d);
 void setup_io_bitmap(struct domain *d);
 
 unsigned long initial_images_nrpages(nodeid_t node);
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index 872d51310628..5d48ebea51d5 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -1028,7 +1028,7 @@ static struct domain *__init create_dom0(const struct 
boot_info *bi)
         write_cr4(read_cr4() & ~X86_CR4_SMAP);
     }
 
-    if ( construct_dom0(bd->d, bd->kernel, bd->ramdisk, bd->cmdline) != 0 )
+    if ( construct_dom0(bd) != 0 )
         panic("Could not construct domain 0\n");
 
     if ( cpu_has_smap )
-- 
2.30.2