[v7,34/38] x86/boot: add cmdline to struct boot_domain

Commit Message

Daniel P. Smith Oct. 21, 2024, 12:46 a.m. UTC

Add a container for the "cooked" command line for a domain.

Signed-off-by: Daniel P. Smith <[e-mail]>
---
 xen/arch/x86/include/asm/bootdomain.h |  4 ++++
 xen/arch/x86/setup.c                  | 18 ++++++++----------
 2 files changed, 12 insertions(+), 10 deletions(-)

Patch

diff --git a/xen/arch/x86/include/asm/bootdomain.h b/xen/arch/x86/include/asm/bootdomain.h
index d6264d554dba..00f7d9267965 100644
--- a/xen/arch/x86/include/asm/bootdomain.h
+++ b/xen/arch/x86/include/asm/bootdomain.h
@@ -8,9 +8,13 @@ 
 #ifndef __XEN_X86_BOOTDOMAIN_H__
 #define __XEN_X86_BOOTDOMAIN_H__
 
+#include <public/xen.h>
+
 struct boot_module;
 
 struct boot_domain {
+    char cmdline[MAX_GUEST_CMDLINE];
+
     domid_t domid;
 
     struct boot_module *kernel;
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index e6756d0ad18d..47b705097dd3 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -962,8 +962,6 @@  static unsigned int __init copy_bios_e820(struct e820entry *map, unsigned int li
 
 static struct domain *__init create_dom0(struct boot_info *bi)
 {
-    static char __initdata cmdline[MAX_GUEST_CMDLINE];
-
     struct xen_domctl_createdomain dom0_cfg = {
         .flags = IS_ENABLED(CONFIG_TBOOT) ? XEN_DOMCTL_CDF_s3_integrity : 0,
         .max_evtchn_port = -1,
@@ -1006,16 +1004,16 @@  static struct domain *__init create_dom0(struct boot_info *bi)
     if ( bd->kernel->cmdline || bi->kextra )
     {
         if ( bd->kernel->cmdline )
-            safe_strcpy(cmdline, cmdline_cook(__va(bd->kernel->cmdline),
+            safe_strcpy(bd->cmdline, cmdline_cook(__va(bd->kernel->cmdline),
                         bi->loader));
 
         if ( bi->kextra )
             /* kextra always includes exactly one leading space. */
-            safe_strcat(cmdline, bi->kextra);
+            safe_strcat(bd->cmdline, bi->kextra);
 
         /* Append any extra parameters. */
-        if ( skip_ioapic_setup && !strstr(cmdline, "noapic") )
-            safe_strcat(cmdline, " noapic");
+        if ( skip_ioapic_setup && !strstr(bd->cmdline, "noapic") )
+            safe_strcat(bd->cmdline, " noapic");
 
         if ( (strlen(acpi_param) == 0) && acpi_disabled )
         {
@@ -1023,14 +1021,14 @@  static struct domain *__init create_dom0(struct boot_info *bi)
             safe_strcpy(acpi_param, "off");
         }
 
-        if ( (strlen(acpi_param) != 0) && !strstr(cmdline, "acpi=") )
+        if ( (strlen(acpi_param) != 0) && !strstr(bd->cmdline, "acpi=") )
         {
-            safe_strcat(cmdline, " acpi=");
-            safe_strcat(cmdline, acpi_param);
+            safe_strcat(bd->cmdline, " acpi=");
+            safe_strcat(bd->cmdline, acpi_param);
         }
     }
 
-    if ( construct_dom0(d, bd->kernel, bd->ramdisk, cmdline) != 0 )
+    if ( construct_dom0(d, bd->kernel, bd->ramdisk, bd->cmdline) != 0 )
         panic("Could not construct domain 0\n");
 
     return d;