[PATCH 5.15 117/262] riscv/mm: Add XIP_FIXUP for phys_ram_base

From: Palmer Dabbelt palmer@rivosinc.com

[ Upstream commit 4b1c70aa8ed8249608bb991380cb8ff423edf49e ]

This manifests as a crash early in boot on VexRiscv.

Signed-off-by: Myrtle Shah gatecat@ds0.me [Palmer: split commit] Fixes: 6d7f91d914bc ("riscv: Get rid of CONFIG_PHYS_RAM_BASE in kernel physical address conversion") Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt palmer@rivosinc.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/riscv/mm/init.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index 5e7decd875258..3de593b26850e 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -451,6 +451,7 @@ static uintptr_t __init best_map_size(phys_addr_t base, phys_addr_t size) }

#ifdef CONFIG_XIP_KERNEL +#define phys_ram_base (*(phys_addr_t *)XIP_FIXUP(&phys_ram_base)) /* called from head.S with MMU off */ asmlinkage void __init __copy_data(void) {