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riscv: Get rid of MAXPHYSMEM configs

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CONFIG_MAXPHYSMEM_* are actually never used, even the nommu defconfigs
selecting the MAXPHYSMEM_2GB had no effects on PAGE_OFFSET since it was
preempted by !MMU case right before.

In addition, the move of the kernel mapping at the end of the address
space broke the use of MAXPHYSMEM_2G with MMU since it defines PAGE_OFFSET
at the same address as the kernel mapping.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Fixes: 2bfc6cd81b ("riscv: Move kernel mapping outside of linear mapping")
Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Conor Dooley <Conor.Dooley@microchip.com>
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Alexandre Ghiti
2022-01-17 10:57:16 +01:00
committed by Palmer Dabbelt
parent fa55b7dcdc
commit db1503d355
4 changed files with 2 additions and 26 deletions
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1
arch/riscv/configs/nommu_virt_defconfig
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@@ -27,7 +27,6 @@ CONFIG_SLOB=y
# CONFIG_SLAB_MERGE_DEFAULT is not set
# CONFIG_MMU is not set
CONFIG_SOC_VIRT=y
CONFIG_MAXPHYSMEM_2GB=y
CONFIG_SMP=y
CONFIG_CMDLINE="root=/dev/vda rw earlycon=uart8250,mmio,0x10000000,115200n8 console=ttyS0"
CONFIG_CMDLINE_FORCE=y