This is a note to let you know that I've just added the patch titled
riscv/mm: Add XIP_FIXUP for riscv_pfn_base
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
riscv-mm-add-xip_fixup-for-riscv_pfn_base.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 5fcee4219b77b08e315c1c97a1e9e3937575fb32
Author: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
Date: Fri Feb 4 13:14:08 2022 -0800
riscv/mm: Add XIP_FIXUP for riscv_pfn_base
[ Upstream commit ca0cb9a60f6d86d4b2139c6f393a78f39edcd7cb ]
This manifests as a crash early in boot on VexRiscv.
Signed-off-by: Myrtle Shah <gatecat@xxxxxx>
[Palmer: split commit]
Fixes: 44c922572952 ("RISC-V: enable XIP")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 7f130ac3b9f9..c58a7c77989b 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -265,6 +265,7 @@ pgd_t early_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE);
static pmd_t __maybe_unused early_dtb_pmd[PTRS_PER_PMD] __initdata __aligned(PAGE_SIZE);
#ifdef CONFIG_XIP_KERNEL
+#define riscv_pfn_base (*(unsigned long *)XIP_FIXUP(&riscv_pfn_base))
#define trampoline_pg_dir ((pgd_t *)XIP_FIXUP(trampoline_pg_dir))
#define fixmap_pte ((pte_t *)XIP_FIXUP(fixmap_pte))
#define early_pg_dir ((pgd_t *)XIP_FIXUP(early_pg_dir))
