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    write_msr(AMD_MSR_GS,
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    write_msr(AMD_MSR_GS,
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          (__u64)&THREAD->kstack);
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          (__u64)&THREAD->kstack);
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    swapgs();
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    swapgs();
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    /* TLS support - set FS to thread local storage */
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    /* TLS support - set FS to thread local storage */
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    write_msr(AMD_MSR_FS, THREAD->tls);
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    write_msr(AMD_MSR_FS, THREAD->arch.tls);
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#ifdef CONFIG_DEBUG_AS_WATCHPOINT
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#ifdef CONFIG_DEBUG_AS_WATCHPOINT
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    /* Set watchpoint on AS to ensure that nobody sets it to zero */
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    /* Set watchpoint on AS to ensure that nobody sets it to zero */
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    if (CPU->id < BKPOINTS_MAX)
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    if (CPU->id < BKPOINTS_MAX)
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        breakpoint_add(&((the_t *) THREAD->kstack)->as,
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        breakpoint_add(&((the_t *) THREAD->kstack)->as,