[PATCH v6 27/44] x86/boot: relocate kextra into boot info

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

Move kextra into struct boot_info, thus no longer needed to be passed as a
parameter to create_dom0.

Signed-off-by: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
---
 xen/arch/x86/include/asm/bootinfo.h |  1 +
 xen/arch/x86/setup.c                | 12 ++++++------
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/xen/arch/x86/include/asm/bootinfo.h 
b/xen/arch/x86/include/asm/bootinfo.h
index 8b63eb27d6dd..8dcda42b3400 100644
--- a/xen/arch/x86/include/asm/bootinfo.h
+++ b/xen/arch/x86/include/asm/bootinfo.h
@@ -57,6 +57,7 @@ struct boot_module {
 struct boot_info {
     const char *loader;
     const char *cmdline;
+    const char *kextra;
 
     paddr_t memmap_addr;
     size_t memmap_length;
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index e7573bc3f40b..2574d2f1fdb4 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -945,8 +945,7 @@ static unsigned int __init copy_bios_e820(struct e820entry 
*map, unsigned int li
     return n;
 }
 
-static struct domain *__init create_dom0(struct boot_info *bi,
-                                         const char *kextra)
+static struct domain *__init create_dom0(struct boot_info *bi)
 {
     static char __initdata cmdline[MAX_GUEST_CMDLINE];
 
@@ -1000,15 +999,15 @@ static struct domain *__init create_dom0(struct 
boot_info *bi,
         panic("Error creating d%uv0\n", domid);
 
     /* Grab the DOM0 command line. */
-    if ( image->mod->string || kextra )
+    if ( image->mod->string || bi->kextra )
     {
         if ( image->mod->string )
             safe_strcpy(cmdline, cmdline_cook(__va(image->mod->string),
                         bi->loader));
 
-        if ( kextra )
+        if ( bi->kextra )
             /* kextra always includes exactly one leading space. */
-            safe_strcat(cmdline, kextra);
+            safe_strcat(cmdline, bi->kextra);
 
         /* Append any extra parameters. */
         if ( skip_ioapic_setup && !strstr(cmdline, "noapic") )
@@ -1102,6 +1101,7 @@ void asmlinkage __init noreturn __start_xen(unsigned long 
mbi_p)
         *kextra = '\0';
         kextra += 3;
         while ( kextra[1] == ' ' ) kextra++;
+        bi->kextra = kextra;
     }
     cmdline_parse(bi->cmdline);
 
@@ -2114,7 +2114,7 @@ void asmlinkage __init noreturn __start_xen(unsigned long 
mbi_p)
      * We're going to setup domain0 using the module(s) that we stashed safely
      * above our heap. The second module, if present, is an initrd ramdisk.
      */
-    dom0 = create_dom0(bi, kextra);
+    dom0 = create_dom0(bi);
     if ( !dom0 )
         panic("Could not set up DOM0 guest OS\n");
 
-- 
2.30.2