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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [snb] GTT go slow"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=84794#c1">Comment # 1</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [snb] GTT go slow"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=84794">bug 84794</a>
              from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
        <pre>The active ingredient is just

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index b32ebf9..f4001e0 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2334,7 +2334,6 @@ config HAVE_ATOMIC_IOMAP

 config HAVE_TEXT_POKE_SMP
        bool
-       select STOP_MACHINE if SMP

 config X86_DEV_DMA_OPS
        bool</pre>
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