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authorAlexey Brodkin2017-05-05 15:20:29 -0500
committerVineet Gupta2017-05-05 15:49:41 -0500
commitcf4100d1cddcd243f80ac2af2e4c4273919ff225 (patch)
tree5aa6e4c81d684e722bf35bde0de0436f4fad9e1d
parent868a65307d3015064db2a6fb2d6e451293e3047f (diff)
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Revert "ARCv2: Allow enabling PAE40 w/o HIGHMEM"
This reverts commit 7cab91b87dd8eeee5911ec34be8bb0288ebba18b. Now when we have a real hardware platform with PAE40 enabled (here I mean axs103 with firmware v1.2) and 1 Gb of DDR mapped to 0x1_a000_0000-0x1_ffff_ffff we're really targeting memory above 4Gb when PAE40 is enabled. This in its turn requires HIGHMEM to be enabled otherwise user won't see any difference with enabling PAE in kernel configuration as only lowmem will be used anyways. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
-rw-r--r--arch/arc/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 5d7fb3e7cb97..a5459698f0ee 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -444,6 +444,7 @@ config ARC_HAS_PAE40
444 bool "Support for the 40-bit Physical Address Extension" 444 bool "Support for the 40-bit Physical Address Extension"
445 default n 445 default n
446 depends on ISA_ARCV2 446 depends on ISA_ARCV2
447 select HIGHMEM
447 help 448 help
448 Enable access to physical memory beyond 4G, only supported on 449 Enable access to physical memory beyond 4G, only supported on
449 ARC cores with 40 bit Physical Addressing support 450 ARC cores with 40 bit Physical Addressing support