[PATCH] UBUNTU: [Config] Disable PAMU on Freescale kernels

Ben Collins ben.c at servergy.com
Wed Apr 23 03:59:09 UTC 2014


In Saucy/v3.11 kernel, we used the PAMU SAUCE patch from Freescale. The
current upstreamed PAMU code appears to break fsl-ehci by restricting 
proper access to memory locations associated with it.

PAMU is an IOMMU extension that protects and prevents access to portions
of memory that are known to be reserved for hardware use. This 
extension is not needed for normal runtime, so rather than allow broken
EHCI, let's disbale this until PAMU can be fixed.

This only affects Freescale PowerPC kernel variations.

Signed-off-by: Ben Collins <ben.c at servergy.com>

diff --git a/debian.master/config/config.common.ubuntu b/debian.master/config/config.common.ubuntu
index a0bcc28..fa9c24e 100644
--- a/debian.master/config/config.common.ubuntu
+++ b/debian.master/config/config.common.ubuntu
@@ -2157,7 +2157,7 @@ CONFIG_FSL_EMB_PERF_EVENT_E500=y
 CONFIG_FSL_HV_MANAGER=m
 CONFIG_FSL_IFC=y
 CONFIG_FSL_LBC=y
-CONFIG_FSL_PAMU=y
+# CONFIG_FSL_PAMU is not set
 CONFIG_FSL_PCI=y
 CONFIG_FSL_PME2=y
 CONFIG_FSL_PME2_CTRL=y

--
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