arm-disable-highmem-on-rt.patch

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 461cf01e7ae1852157c75391207f36003e43f1ee..be63221185b65885fa038c5031509a04b7587c09 100644 (file)
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1668,7 +1668,7 @@ config HAVE_ARCH_PFN_VALID
 
 config HIGHMEM
        bool "High Memory Support"
-       depends on MMU
+       depends on MMU && !PREEMPT_RT_FULL
        help
          The address space of ARM processors is only 4 Gigabytes large
          and it has to accommodate user address space, kernel address