The patch titled
Subject: riscv/mm: fix build error while PAGE_TABLE_CHECK enabled without MMU
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
riscv-mm-fix-build-error-while-page_table_check-enabled-without-mmu.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/riscv-mm-fix-build-error-while-page_table_check-enabled-without-mmu.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: YueHaibing <yuehaibing@xxxxxxxxxx>
Subject: riscv/mm: fix build error while PAGE_TABLE_CHECK enabled without MMU
Date: Fri, 24 Jun 2022 16:52:36 +0800
mm/page_table_check.c: In function `__page_table_check_pte_clear':
mm/page_table_check.c:148:6: error: implicit declaration of function `pte_user_accessible_page'; did you mean `user_access_save'? [-Werror=implicit-function-declaration]
if (pte_user_accessible_page(pte)) {
^~~~~~~~~~~~~~~~~~~~~~~~
user_access_save
ARCH_SUPPORTS_PAGE_TABLE_CHECK should only enabled with MMU.
Link: https://lkml.kernel.org/r/20220624085236.18544-1-yuehaibing@xxxxxxxxxx
Fixes: 3fee229a8eb9 ("riscv/mm: enable ARCH_SUPPORTS_PAGE_TABLE_CHECK")
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
Cc: Paul Walmsley <paul.walmsley@xxxxxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx>
Cc: Albert Ou <aou@xxxxxxxxxxxxxxxxx>
Cc: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
Cc: Tong Tiangen <tongtiangen@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/riscv/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/riscv/Kconfig~riscv-mm-fix-build-error-while-page_table_check-enabled-without-mmu
+++ a/arch/riscv/Kconfig
@@ -38,7 +38,7 @@ config RISCV
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_DEBUG_PAGEALLOC if MMU
select ARCH_SUPPORTS_HUGETLBFS if MMU
- select ARCH_SUPPORTS_PAGE_TABLE_CHECK
+ select ARCH_SUPPORTS_PAGE_TABLE_CHECK if MMU
select ARCH_USE_MEMTEST
select ARCH_USE_QUEUED_RWLOCKS
select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
_
Patches currently in -mm which might be from yuehaibing@xxxxxxxxxx are
riscv-mm-fix-build-error-while-page_table_check-enabled-without-mmu.patch
