Adding upstream version 4.19.249.upstream/4.19.249

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

1 files changed, 71 insertions, 0 deletions

diff --git a/arch/sparc/include/asm/tlbflush_64.h b/arch/sparc/include/asm/tlbflush_64.h
new file mode 100644
index 000000000..8b8cdaa69
--- /dev/null
+++ b/arch/sparc/include/asm/tlbflush_64.h
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SPARC64_TLBFLUSH_H
+#define _SPARC64_TLBFLUSH_H
+
+#include <asm/mmu_context.h>
+
+/* TSB flush operations. */
+
+#define TLB_BATCH_NR	192
+
+struct tlb_batch {
+	unsigned int hugepage_shift;
+	struct mm_struct *mm;
+	unsigned long tlb_nr;
+	unsigned long active;
+	unsigned long vaddrs[TLB_BATCH_NR];
+};
+
+void flush_tsb_kernel_range(unsigned long start, unsigned long end);
+void flush_tsb_user(struct tlb_batch *tb);
+void flush_tsb_user_page(struct mm_struct *mm, unsigned long vaddr,
+			 unsigned int hugepage_shift);
+
+/* TLB flush operations. */
+
+static inline void flush_tlb_mm(struct mm_struct *mm)
+{
+}
+
+static inline void flush_tlb_page(struct vm_area_struct *vma,
+				  unsigned long vmaddr)
+{
+}
+
+static inline void flush_tlb_range(struct vm_area_struct *vma,
+				   unsigned long start, unsigned long end)
+{
+}
+
+void flush_tlb_kernel_range(unsigned long start, unsigned long end);
+
+#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
+
+void flush_tlb_pending(void);
+void arch_enter_lazy_mmu_mode(void);
+void arch_leave_lazy_mmu_mode(void);
+#define arch_flush_lazy_mmu_mode()      do {} while (0)
+
+/* Local cpu only.  */
+void __flush_tlb_all(void);
+void __flush_tlb_page(unsigned long context, unsigned long vaddr);
+void __flush_tlb_kernel_range(unsigned long start, unsigned long end);
+
+#ifndef CONFIG_SMP
+
+static inline void global_flush_tlb_page(struct mm_struct *mm, unsigned long vaddr)
+{
+	__flush_tlb_page(CTX_HWBITS(mm->context), vaddr);
+}
+
+#else /* CONFIG_SMP */
+
+void smp_flush_tlb_kernel_range(unsigned long start, unsigned long end);
+void smp_flush_tlb_page(struct mm_struct *mm, unsigned long vaddr);
+
+#define global_flush_tlb_page(mm, vaddr) \
+	smp_flush_tlb_page(mm, vaddr)
+
+#endif /* ! CONFIG_SMP */
+
+#endif /* _SPARC64_TLBFLUSH_H */