On 10/8/24 12:46, Jason Andryuk wrote:
On 2024-10-06 17:49, Daniel P. Smith wrote:
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 <[email protected]>
---
  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 b0946216ea3f..0d2ee19998aa 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -1037,7 +1037,7 @@ 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;
@@ -1187,15 +1187,14 @@ 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 + 1 )

Don't you want to check MAX_NR_BOOTMODS, to keep the last module for Xen itself?

Good question. I went back to confirm and it does not look like any of the module_map bits was used for tracking xen in the module list. so yes, drop it back down to just MAX_NR_BOOTMODS.

v/r,
dps

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