[PATCH] powerpc/mm: export symbols for lazy_mmu_mode KUnit tests

Kevin Brodsky
2025-12-17T16:38:19Z

Upcoming KUnit tests will call lazy_mmu_mode_{enable,disable}.
These tests may be built as a module, and because of inlining this
means that symbols referenced by arch_{enter,leave}_lazy_mmu_mode
need to be exported.

Suggested-by: Ryan Roberts <ryan.roberts@arm.com>
Suggested-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
---

Andrew, please add this patch just before the last patch in the series
("mm: Add basic tests for lazy_mmu"). Thanks!
---
arch/powerpc/mm/book3s64/hash_tlb.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/mm/book3s64/hash_tlb.c b/arch/powerpc/mm/book3s64/hash_tlb.c
index fbdeb8981ae7..9e622519a423 100644
--- a/arch/powerpc/mm/book3s64/hash_tlb.c
+++ b/arch/powerpc/mm/book3s64/hash_tlb.c
@@ -30,6 +30,7 @@
#include <trace/events/thp.h>

DEFINE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
+EXPORT_SYMBOL_IF_KUNIT(ppc64_tlb_batch); /* For lazy_mmu_mode KUnit tests */

/*
* A linux PTE was changed and the corresponding hash table entry
@@ -154,6 +155,7 @@ void __flush_tlb_pending(struct ppc64_tlb_batch *batch)
flush_hash_range(i, local);
batch->index = 0;
}
+EXPORT_SYMBOL_IF_KUNIT(__flush_tlb_pending); /* For lazy_mmu_mode KUnit tests */

void hash__tlb_flush(struct mmu_gather *tlb)
{

base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
--
2.51.2