[Xen-changelog] [xen master] x86/boot: Remove stack segment parameter from smpboot

[patchbot@xxxxxxx]

commit 1e30327eeb08420e75f6296aac0625f361948028
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Fri Aug 16 11:46:25 2013 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Aug 16 11:46:25 2013 +0200

    x86/boot: Remove stack segment parameter from smpboot
    
    The stack segment is legacy remnant of a 32bit hypervisor, and not used in
    64bit.  Furthermore, the unsigned short in the structure actually aliases
    whatever the linker decides to put next in the data section.
    
    Drop the extern struct definition and change it to a simple void pointer,
    which matches its definition in arch/x86/boot/x86_64.S
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/arch/x86/smpboot.c |    9 +++------
 1 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c
index 3df4e88..9f81c7b 100644
--- a/xen/arch/x86/smpboot.c
+++ b/xen/arch/x86/smpboot.c
@@ -393,10 +393,7 @@ void start_secondary(void *unused)
     startup_cpu_idle_loop();
 }
 
-extern struct {
-    void * esp;
-    unsigned short ss;
-} stack_start;
+extern void *stack_start;
 
 static int wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip)
 {
@@ -555,7 +552,7 @@ static int do_boot_cpu(int apicid, int cpu)
         printk("Booting processor %d/%d eip %lx\n",
                cpu, apicid, start_eip);
 
-    stack_start.esp = stack_base[cpu];
+    stack_start = stack_base[cpu];
 
     /* This grunge runs the startup process for the targeted processor. */
 
@@ -734,7 +731,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
     boot_cpu_physical_apicid = get_apic_id();
     x86_cpu_to_apicid[0] = boot_cpu_physical_apicid;
 
-    stack_base[0] = stack_start.esp;
+    stack_base[0] = stack_start;
 
     if ( !zalloc_cpumask_var(&per_cpu(cpu_sibling_mask, 0)) ||
          !zalloc_cpumask_var(&per_cpu(cpu_core_mask, 0)) )
--
generated by git-patchbot for /home/xen/git/xen.git#master

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