FAILED: patch "[PATCH] riscv/mm: Add XIP_FIXUP for phys_ram_base" failed to apply to 5.15-stable tree

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 <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 4b1c70aa8ed8249608bb991380cb8ff423edf49e Mon Sep 17 00:00:00 2001
From: Palmer Dabbelt <[email protected]>
Date: Fri, 4 Feb 2022 13:13:37 -0800
Subject: [PATCH] riscv/mm: Add XIP_FIXUP for phys_ram_base

This manifests as a crash early in boot on VexRiscv.

index cf4d018b7d66..eecfacac2cc5 100644
@@ -522,6 +522,7 @@ 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))
 extern char _xiprom[], _exiprom[], __data_loc;
 
 /* called from head.S with MMU off */