On 20.10.25 12:37, Kevin Brodsky wrote:
On 18/10/2025 11:52, Mike Rapoport wrote:
@@ -231,7 +231,7 @@ static inline int pmd_dirty(pmd_t pmd)
* held, but for kernel PTE updates, no lock is held). Nesting is not
permitted
* and the mode cannot be used in interrupt context.
*/
-#ifndef __HAVE_ARCH_ENTER_LAZY_MMU_MODE
+#ifndef CONFIG_ARCH_LAZY_MMU
static inline void arch_enter_lazy_mmu_mode(void) {}
static inline void arch_leave_lazy_mmu_mode(void) {}
static inline void arch_flush_lazy_mmu_mode(void) {}
diff --git a/mm/Kconfig b/mm/Kconfig
index 0e26f4fc8717..2fdcb42ca1a1 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -1372,6 +1372,9 @@ config PT_RECLAIM
config FIND_NORMAL_PAGE
def_bool n
+config ARCH_LAZY_MMU
+ bool
+
I think a better name would be ARCH_HAS_LAZY_MMU and the config option fits
better to arch/Kconfig.
Sounds fine by me - I'm inclined to make it slightly longer still,
ARCH_HAS_LAZY_MMU_MODE, to avoid making "LAZY_MMU" sound like some HW
feature.
LGTM.
--
Cheers
David / dhildenb
