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s390/tlb: Use mm_has_pgste() instead of mm_alloc_pgste()

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[ Upstream commit 9291ea091b29bb3e37c4b3416c7c1e49e472c7d5 ]

An mm has pgstes only after s390_enable_sie() has been called, while
mm_alloc_pgste() may be always true (e.g. via sysctl setting).

Limit the calls to gmap_unlink() in pte_free_tlb() to those cases
where there might be something to unlink.

Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Heiko Carstens
2025-03-10 12:42:59 +01:00
committed by Greg Kroah-Hartman
parent 1ea4653cff
commit f3ea633a11
1 changed files with 1 additions and 1 deletions
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2
arch/s390/include/asm/tlb.h
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@@ -85,7 +85,7 @@ static inline void pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
tlb->mm->context.flush_mm = 1;
tlb->freed_tables = 1;
tlb->cleared_pmds = 1;
if (mm_alloc_pgste(tlb->mm))
if (mm_has_pgste(tlb->mm))
gmap_unlink(tlb->mm, (unsigned long *)pte, address);
tlb_remove_ptdesc(tlb, pte);
}