[xen staging] x86/boot: move mmap info to boot info

[patchbot@xxxxxxx]

commit a285d2ac2e524c808091062c67142cf5924b56f6
Author:     Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
AuthorDate: Thu Oct 17 13:02:44 2024 -0400
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Thu Oct 17 23:42:51 2024 +0100

    x86/boot: move mmap info to boot info
    
    Transition the memory map info to be held in struct boot_info.
    
    No functional change intended.
    
    Signed-off-by: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
    Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/arch/x86/include/asm/bootinfo.h |  5 +++++
 xen/arch/x86/setup.c                | 12 +++++++++---
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/xen/arch/x86/include/asm/bootinfo.h 
b/xen/arch/x86/include/asm/bootinfo.h
index c980f0bdb7..e7821e0603 100644
--- a/xen/arch/x86/include/asm/bootinfo.h
+++ b/xen/arch/x86/include/asm/bootinfo.h
@@ -8,6 +8,8 @@
 #ifndef X86_BOOTINFO_H
 #define 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 01e35b9659..163f5620da 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -297,6 +297,12 @@ static struct boot_info *__init 
multiboot_fill_boot_info(unsigned long mbi_p)
     if ( mbi->flags & MBI_CMDLINE )
         bi->cmdline = cmdline_cook(__va(mbi->cmdline), bi->loader);
 
+    if ( mbi->flags & MBI_MEMMAP )
+    {
+        bi->memmap_addr   = mbi->mmap_addr;
+        bi->memmap_length = mbi->mmap_length;
+    }
+
     return bi;
 }
 
@@ -1187,13 +1193,13 @@ 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
--
generated by git-patchbot for /home/xen/git/xen.git#staging