diff mbox series

[v6,04/44] x86/boot: move mmap info to boot info

Message ID 20241017170325.3842-5-dpsmith@apertussolutions.com (mailing list archive)
State Superseded
Headers show
Series Boot modules for Hyperlaunch | expand

Commit Message

Daniel P. Smith Oct. 17, 2024, 5:02 p.m. UTC 
Transition the memory map info to be held in struct boot_info.

No functional change intended.

Signed-off-by: Daniel P. Smith <dpsmith@apertussolutions.com>
Reviewed-by: Jason Andryuk <jason.andryuk@amd.com>
---
Changes since v5:
- reorder of struct boot_module fields
- changed to memmap_length check for memmap detection
---
 xen/arch/x86/include/asm/bootinfo.h |  5 +++++
 xen/arch/x86/setup.c                | 12 +++++++++---
 2 files changed, 14 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/xen/arch/x86/include/asm/bootinfo.h b/xen/arch/x86/include/asm/bootinfo.h
index efbbd30cc514..f75a7e72a700 100644
--- a/xen/arch/x86/include/asm/bootinfo.h
+++ b/xen/arch/x86/include/asm/bootinfo.h
@@ -8,6 +8,8 @@ 
 #ifndef __XEN_X86_BOOTINFO_H__
 #define __XEN_X86_BOOTINFO_H__
 
+#include <xen/types.h>
+
 /*
  * Xen internal representation of information provided by the
  * bootloader/environment, or derived from the information.
@@ -16,6 +18,9 @@  struct boot_info {
     const char *loader;
     const char *cmdline;
 
+    paddr_t memmap_addr;
+    size_t memmap_length;
+
     unsigned int nr_modules;
 };
 
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index 037cdd17386c..f7ea482920ef 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -296,6 +296,12 @@  static struct boot_info *__init multiboot_fill_boot_info(unsigned long mbi_p)
     else
         bi->cmdline = "";
 
+    if ( mbi->flags & MBI_MEMMAP )
+    {
+        bi->memmap_addr = mbi->mmap_addr;
+        bi->memmap_length = mbi->mmap_length;
+    }
+
     return bi;
 }
 
@@ -1185,13 +1191,13 @@  void asmlinkage __init noreturn __start_xen(unsigned long mbi_p)
     {
         memmap_type = "Xen-e820";
     }
-    else if ( mbi->flags & MBI_MEMMAP )
+    else if ( bi->memmap_length )
     {
         memmap_type = "Multiboot-e820";
-        while ( bytes < mbi->mmap_length &&
+        while ( bytes < bi->memmap_length &&
                 e820_raw.nr_map < ARRAY_SIZE(e820_raw.map) )
         {
-            memory_map_t *map = __va(mbi->mmap_addr + bytes);
+            memory_map_t *map = __va(bi->memmap_addr + bytes);
 
             /*
              * This is a gross workaround for a BIOS bug. Some bootloaders do