x86: enable DMAR by default

Now that the obvious bugs have been worked out, specifically
the iwlagn issue, and the write buffer errata, DMAR should be safe
to turn back on by default. (We've had it on since those patches were
first written a few weeks ago, without any noticeable bug reports
(most have been due to the dma-api debug patchset.))

Signed-off-by: Kyle McMartin <[email protected]>
Acked-by: David Woodhouse <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 9c39095b33fc0d1dbdc7f92408314dae1ed38e87..bc2fbadff9f90fe681d9c30ae621d1ec94e348cf 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1803,7 +1803,7 @@ config DMAR
          remapping devices.
 
 config DMAR_DEFAULT_ON
-       def_bool n
+       def_bool y
        prompt "Enable DMA Remapping Devices by default"
        depends on DMAR
        help