[PATCH v6 24/44] x86/boot: remove module_map usage by ramdisk loading

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

The ramdisk loading is the last user of module_map, remove
its usage and any remaining remnants of module_map.

Signed-off-by: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
---
Changes since v5:
- set excessive module check down to MAX_NR_BOOTMODS
---
 xen/arch/x86/setup.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index 91110ba96f73..08319f871a5d 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -1036,7 +1036,7 @@ void asmlinkage __init noreturn __start_xen(unsigned long 
mbi_p)
     struct boot_info *bi;
     multiboot_info_t *mbi;
     module_t *mod;
-    unsigned long nr_pages, raw_max_page, module_map[1];
+    unsigned long nr_pages, raw_max_page;
     int i, j, e820_warn = 0, bytes = 0;
     unsigned long eb_start, eb_end;
     bool acpi_boot_table_init_done = false, relocated = false;
@@ -1186,15 +1186,14 @@ void asmlinkage __init noreturn __start_xen(unsigned 
long mbi_p)
         panic("dom0 kernel not specified. Check bootloader configuration\n");
 
     /* Check that we don't have a silly number of modules. */
-    if ( bi->nr_modules > sizeof(module_map) * 8 )
+    if ( bi->nr_modules > MAX_NR_BOOTMODS )
     {
-        bi->nr_modules = sizeof(module_map) * 8;
-        printk("Excessive boot modules - using the first %u only\n",
+        bi->nr_modules = MAX_NR_BOOTMODS;
+        printk("Excessive multiboot modules - using the first %u only\n",
                bi->nr_modules);
     }
 
-    bitmap_fill(module_map, bi->nr_modules);
-    __clear_bit(0, module_map); /* Dom0 kernel is always first */
+    /* Dom0 kernel is always first */
     bi->mods[0].type = BOOTMOD_KERNEL;
     bi->mods[0].flags = BOOTMOD_FLAG_X86_CONSUMED;
 
-- 
2.30.2