x86: Introduce 'struct fpu' and related API

[mv-sheeva.git] / arch / x86 / kernel / process_64.c

diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index dc9690b4c4cccf5450a8f49c0aec3bbdb1a86f78..979215f519852ffa49aba747b10b48bf6f528736 100644 (file)
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -276,12 +276,12 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
 
        set_tsk_thread_flag(p, TIF_FORK);
 
-       p->thread.fs = me->thread.fs;
-       p->thread.gs = me->thread.gs;
        p->thread.io_bitmap_ptr = NULL;
 
        savesegment(gs, p->thread.gsindex);
+       p->thread.gs = p->thread.gsindex ? 0 : me->thread.gs;
        savesegment(fs, p->thread.fsindex);
+       p->thread.fs = p->thread.fsindex ? 0 : me->thread.fs;
        savesegment(es, p->thread.es);
        savesegment(ds, p->thread.ds);
 
@@ -396,7 +396,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 
        /* we're going to use this soon, after a few expensive things */
        if (preload_fpu)
-               prefetch(next->xstate);
+               prefetch(next->fpu.state);
 
        /*
         * Reload esp0, LDT and the page table pointer: