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Commit cf4100d1 authored by Alexey Brodkin's avatar Alexey Brodkin Committed by Vineet Gupta
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Revert "ARCv2: Allow enabling PAE40 w/o HIGHMEM" 



This reverts commit 7cab91b8.

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: default avatarAlexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
parent 868a6530

arch/arc/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -444,6 +444,7 @@ config ARC_HAS_PAE40 
	bool "Support for the 40-bit Physical Address Extension"

	default n

	depends on ISA_ARCV2

	select HIGHMEM

	help

	  Enable access to physical memory beyond 4G, only supported on

	  ARC cores with 40 bit Physical Addressing support