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riscv: mm: fix wrong phys_ram_base value for RV64 

Currently, if 64BIT and !XIP_KERNEL, the phys_ram_base is always 0,
no matter the real start of dram reported by memblock is.

Fixes: 6d7f91d914 ("riscv: Get rid of CONFIG_PHYS_RAM_BASE in kernel physical address conversion")
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Alexandre Ghiti <alex@ghiti.fr>
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Jisheng Zhang 2021-12-02 23:36:41 +08:00 committed by Palmer Dabbelt
parent 869c706092
commit b0fd4b1bf9
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1 changed files with 1 additions and 1 deletions
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arch/riscv/mm/init.c
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@ -187,10 +187,10 @@ static void __init setup_bootmem(void)
phys_ram_end = memblock_end_of_DRAM();
#ifndef CONFIG_64BIT
#ifndef CONFIG_XIP_KERNEL
phys_ram_base = memblock_start_of_DRAM();
#endif
#ifndef CONFIG_64BIT
/*
* memblock allocator is not aware of the fact that last 4K bytes of
* the addressable memory can not be mapped because of IS_ERR_VALUE