Revert "arm64, mm: avoid always making PTE dirty in pte_mkwrite()"

deepin inclusion
category: bugfix

This reverts commit 4dfc170.
which 4f32f754343a8888c9b2196633491d7b2665c8c4 stable,
which 143937c upstream.

It broken s4 and kexec, before solution upstreamed, revert it.

Link: https://lore.kernel.org/all/20251204062722.3367201-1-jianpeng.chang.cn@windriver.com/
Signed-off-by: wenlunpeng <wenlunpeng@uniontech.com>
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>

Author: opsiff

arch/arm64/include/asm/pgtable.h

@@ -184,8 +184,7 @@ static inline pmd_t set_pmd_bit(pmd_t pmd, pgprot_t prot)
 static inline pte_t pte_mkwrite_novma(pte_t pte)
 {
 	pte = set_pte_bit(pte, __pgprot(PTE_WRITE));
-	if (pte_sw_dirty(pte))
-		pte = clear_pte_bit(pte, __pgprot(PTE_RDONLY));
+	pte = clear_pte_bit(pte, __pgprot(PTE_RDONLY));
 	return pte;
 }