Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 119 insertions, 0 deletions

diff --git a/arch/sparc/include/asm/pgalloc_64.h b/arch/sparc/include/asm/pgalloc_64.h
new file mode 100644
index 000000000..874632f34
--- /dev/null
+++ b/arch/sparc/include/asm/pgalloc_64.h
@@ -0,0 +1,119 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SPARC64_PGALLOC_H
+#define _SPARC64_PGALLOC_H
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+
+#include <asm/spitfire.h>
+#include <asm/cpudata.h>
+#include <asm/cacheflush.h>
+#include <asm/page.h>
+
+/* Page table allocation/freeing. */
+
+extern struct kmem_cache *pgtable_cache;
+
+static inline void __pgd_populate(pgd_t *pgd, pud_t *pud)
+{
+	pgd_set(pgd, pud);
+}
+
+#define pgd_populate(MM, PGD, PUD)	__pgd_populate(PGD, PUD)
+
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
+}
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+	kmem_cache_free(pgtable_cache, pgd);
+}
+
+static inline void __pud_populate(pud_t *pud, pmd_t *pmd)
+{
+	pud_set(pud, pmd);
+}
+
+#define pud_populate(MM, PUD, PMD)	__pud_populate(PUD, PMD)
+
+static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
+{
+	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
+}
+
+static inline void pud_free(struct mm_struct *mm, pud_t *pud)
+{
+	kmem_cache_free(pgtable_cache, pud);
+}
+
+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
+{
+	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
+}
+
+static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
+{
+	kmem_cache_free(pgtable_cache, pmd);
+}
+
+pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+			    unsigned long address);
+pgtable_t pte_alloc_one(struct mm_struct *mm,
+			unsigned long address);
+void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
+void pte_free(struct mm_struct *mm, pgtable_t ptepage);
+
+#define pmd_populate_kernel(MM, PMD, PTE)	pmd_set(MM, PMD, PTE)
+#define pmd_populate(MM, PMD, PTE)		pmd_set(MM, PMD, PTE)
+#define pmd_pgtable(PMD)			((pte_t *)__pmd_page(PMD))
+
+#define check_pgt_cache()	do { } while (0)
+
+void pgtable_free(void *table, bool is_page);
+
+#ifdef CONFIG_SMP
+
+struct mmu_gather;
+void tlb_remove_table(struct mmu_gather *, void *);
+
+static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
+{
+	unsigned long pgf = (unsigned long)table;
+	if (is_page)
+		pgf |= 0x1UL;
+	tlb_remove_table(tlb, (void *)pgf);
+}
+
+static inline void __tlb_remove_table(void *_table)
+{
+	void *table = (void *)((unsigned long)_table & ~0x1UL);
+	bool is_page = false;
+
+	if ((unsigned long)_table & 0x1UL)
+		is_page = true;
+	pgtable_free(table, is_page);
+}
+#else /* CONFIG_SMP */
+static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
+{
+	pgtable_free(table, is_page);
+}
+#endif /* !CONFIG_SMP */
+
+static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
+				  unsigned long address)
+{
+	pgtable_free_tlb(tlb, pte, true);
+}
+
+#define __pmd_free_tlb(tlb, pmd, addr)		      \
+	pgtable_free_tlb(tlb, pmd, false)
+
+#define __pud_free_tlb(tlb, pud, addr)		      \
+	pgtable_free_tlb(tlb, pud, false)
+
+#endif /* _SPARC64_PGALLOC_H */