The implementation of CONFIG_PT_RECLAIM is completely contained in generic mm code. It depends on the RCU callback which will reclaim the pagetables - there is nothing arch-specific about that. So, enable this config for all architectures. Signed-off-by: Dev Jain --- arch/x86/Kconfig | 1 - mm/Kconfig | 5 +---- mm/pt_reclaim.c | 2 +- 3 files changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index fa3b616af03a..5681308a5650 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -327,7 +327,6 @@ config X86 select FUNCTION_ALIGNMENT_4B imply IMA_SECURE_AND_OR_TRUSTED_BOOT if EFI select HAVE_DYNAMIC_FTRACE_NO_PATCHABLE - select ARCH_SUPPORTS_PT_RECLAIM if X86_64 select ARCH_SUPPORTS_SCHED_SMT if SMP select SCHED_SMT if SMP select ARCH_SUPPORTS_SCHED_CLUSTER if SMP diff --git a/mm/Kconfig b/mm/Kconfig index 0e26f4fc8717..903c37d02555 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -1355,13 +1355,10 @@ config ARCH_HAS_USER_SHADOW_STACK The architecture has hardware support for userspace shadow call stacks (eg, x86 CET, arm64 GCS or RISC-V Zicfiss). -config ARCH_SUPPORTS_PT_RECLAIM - def_bool n - config PT_RECLAIM bool "reclaim empty user page table pages" default y - depends on ARCH_SUPPORTS_PT_RECLAIM && MMU && SMP + depends on MMU && SMP select MMU_GATHER_RCU_TABLE_FREE help Try to reclaim empty user page table pages in paths other than munmap diff --git a/mm/pt_reclaim.c b/mm/pt_reclaim.c index 7e9455a18aae..049e17f08c6a 100644 --- a/mm/pt_reclaim.c +++ b/mm/pt_reclaim.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #include -#include +#include #include #include "internal.h" -- 2.30.2