lkml.org 
[lkml]   [2021]   [Mar]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] riscv: XIP: fix build for rv32
Date
32-bit RISC-V uses folded page tables by default, so we should
follow that in the XIP-specific part of init too.

Signed-off-by: Vitaly Wool <vitaly.wool@konsulko.com>
Reported-by: kernel test robot <lkp@intel.com>
---
arch/riscv/mm/init.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index fe583c2aa5a2..8c0eeaae67a3 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -481,6 +481,7 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
#endif

#ifdef CONFIG_XIP_KERNEL
+#ifndef __PAGETABLE_PMD_FOLDED
create_pgd_mapping(trampoline_pg_dir, XIP_VIRT_ADDR_START,
(uintptr_t)xip_pmd, PGDIR_SIZE, PAGE_TABLE);
for (va = XIP_VIRT_ADDR_START;
@@ -493,7 +494,16 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)

create_pgd_mapping(early_pg_dir, XIP_VIRT_ADDR_START,
(uintptr_t)xip_pmd, PGDIR_SIZE, PAGE_TABLE);
-#endif
+#else
+ for (va = XIP_VIRT_ADDR_START;
+ va < XIP_VIRT_ADDR_START + xiprom_sz;
+ va += map_size) {
+ create_pgd_mapping(early_pg_dir, va,
+ xiprom + (va - XIP_VIRT_ADDR_START),
+ map_size, PAGE_KERNEL_EXEC);
+ }
+#endif /* __PAGETABLE_PMD_FOLDED */
+#endif /* CONFIG_XIP_KERNEL */

/*
* Setup early PGD covering entire kernel which will allows
--
2.29.2
\
 
 \ /
  Last update: 2021-03-27 20:51    [W:0.023 / U:0.176 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site