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

JIRA: https://issues.redhat.com/browse/RHEL-113440

commit 9291ea0
Author: Heiko Carstens <hca@linux.ibm.com>
Date:   Mon Mar 10 12:42:59 2025 +0100

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

    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: Thomas Huth <thuth@redhat.com>

Author: huth

arch/s390/include/asm/tlb.h

@@ -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);
 }