Commit cf4100d1 authored by Alexey Brodkin's avatar Alexey Brodkin Committed by Vineet Gupta

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
...@@ -444,6 +444,7 @@ config ARC_HAS_PAE40 ...@@ -444,6 +444,7 @@ config ARC_HAS_PAE40
bool "Support for the 40-bit Physical Address Extension" bool "Support for the 40-bit Physical Address Extension"
default n default n
depends on ISA_ARCV2 depends on ISA_ARCV2
select HIGHMEM
help help
Enable access to physical memory beyond 4G, only supported on Enable access to physical memory beyond 4G, only supported on
ARC cores with 40 bit Physical Addressing support ARC cores with 40 bit Physical Addressing support
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment