diff options
| author | Glauber de Oliveira Costa <gcosta@redhat.com> | 2008-01-30 13:31:31 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:31:31 +0100 |
| commit | 7818a1e0294debee02d5135e17b89f28b8871887 (patch) | |
| tree | 251473910cddc3c2889407cde8f6f962dc14e88f /arch | |
| parent | ca241c75037b32e0216a68e39ad2801d04fa1f87 (diff) | |
x86: provide 64-bit with a load_sp0 function.
Paravirt guests need to inform the underlying hypervisor whenever the sp0
tss field changes. i386 already has such a function, and we use it for
x86_64 too. There's an unnecessary (for 64-bit) msr handling part in the original
version, and it is placed around an ifdef. Making no more sense in
processor_32.h, it is moved to the common header
Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/process_64.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/smpboot_64.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index af56104b73f..e3a3610ade1 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -639,7 +639,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p) /* * Reload esp0, LDT and the page table pointer: */ - tss->x86_tss.sp0 = next->sp0; + load_sp0(tss, next); /* * Switch DS and ES. diff --git a/arch/x86/kernel/smpboot_64.c b/arch/x86/kernel/smpboot_64.c index 2ea02a71b64..5bd42ce144d 100644 --- a/arch/x86/kernel/smpboot_64.c +++ b/arch/x86/kernel/smpboot_64.c @@ -614,7 +614,7 @@ do_rest: start_rip = setup_trampoline(); init_rsp = c_idle.idle->thread.sp; - per_cpu(init_tss, cpu).x86_tss.sp0 = init_rsp; + load_sp0(&per_cpu(init_tss, cpu), &c_idle.idle->thread); initial_code = start_secondary; clear_tsk_thread_flag(c_idle.idle, TIF_FORK); |