The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 9f36b96bc70f9707e618d22cd6a6baf86706ade2 Mon Sep 17 00:00:00 2001
From: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
Date: Fri, 19 Nov 2021 08:44:03 -0800
Subject: [PATCH] RISC-V: MAXPHYSMEM_2GB doesn't depend on CMODEL_MEDLOW
For non-relocatable kernels we need to be able to link the kernel at
approximately PAGE_OFFSET, thus requiring medany (as medlow requires the
code to be linked within 2GiB of 0). The inverse doesn't apply, though:
since medany code can be linked anywhere it's fine to link it close to
0, so we can support the smaller memory config.
Fixes: de5f4b8f634b ("RISC-V: Define MAXPHYSMEM_1GB only for RV32")
Reviewed-by: Anup Patel <anup@xxxxxxxxxxxxxx>
Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 821252b65f89..61f64512dcde 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -280,7 +280,7 @@ choice
depends on 32BIT
bool "1GiB"
config MAXPHYSMEM_2GB
- depends on 64BIT && CMODEL_MEDLOW
+ depends on 64BIT
bool "2GiB"
config MAXPHYSMEM_128GB
depends on 64BIT && CMODEL_MEDANY
