Merging upstream version 6.9.7.

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

1 files changed, 37 insertions, 7 deletions

diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h
index 129a3a7599..709830274b 100644
--- a/include/asm-generic/tlb.h
+++ b/include/asm-generic/tlb.h
@@ -69,6 +69,7 @@
  *
  *  - tlb_remove_page() / __tlb_remove_page()
  *  - tlb_remove_page_size() / __tlb_remove_page_size()
+ *  - __tlb_remove_folio_pages()
  *
  *    __tlb_remove_page_size() is the basic primitive that queues a page for
  *    freeing. __tlb_remove_page() assumes PAGE_SIZE. Both will return a
@@ -78,6 +79,11 @@
  *    tlb_remove_page() and tlb_remove_page_size() imply the call to
  *    tlb_flush_mmu() when required and has no return value.
  *
+ *    __tlb_remove_folio_pages() is similar to __tlb_remove_page(), however,
+ *    instead of removing a single page, remove the given number of consecutive
+ *    pages that are all part of the same (large) folio: just like calling
+ *    __tlb_remove_page() on each page individually.
+ *
  *  - tlb_change_page_size()
  *
  *    call before __tlb_remove_page*() to set the current page-size; implies a
@@ -260,9 +266,10 @@ struct mmu_gather_batch {
  */
 #define MAX_GATHER_BATCH_COUNT	(10000UL/MAX_GATHER_BATCH)
 
-extern bool __tlb_remove_page_size(struct mmu_gather *tlb,
-				   struct encoded_page *page,
-				   int page_size);
+extern bool __tlb_remove_page_size(struct mmu_gather *tlb, struct page *page,
+		bool delay_rmap, int page_size);
+bool __tlb_remove_folio_pages(struct mmu_gather *tlb, struct page *page,
+		unsigned int nr_pages, bool delay_rmap);
 
 #ifdef CONFIG_SMP
 /*
@@ -462,13 +469,14 @@ static inline void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb)
 static inline void tlb_remove_page_size(struct mmu_gather *tlb,
 					struct page *page, int page_size)
 {
-	if (__tlb_remove_page_size(tlb, encode_page(page, 0), page_size))
+	if (__tlb_remove_page_size(tlb, page, false, page_size))
 		tlb_flush_mmu(tlb);
 }
 
-static __always_inline bool __tlb_remove_page(struct mmu_gather *tlb, struct page *page, unsigned int flags)
+static __always_inline bool __tlb_remove_page(struct mmu_gather *tlb,
+		struct page *page, bool delay_rmap)
 {
-	return __tlb_remove_page_size(tlb, encode_page(page, flags), PAGE_SIZE);
+	return __tlb_remove_page_size(tlb, page, delay_rmap, PAGE_SIZE);
 }
 
 /* tlb_remove_page
@@ -592,7 +600,9 @@ static inline void tlb_flush_p4d_range(struct mmu_gather *tlb,
 }
 
 #ifndef __tlb_remove_tlb_entry
-#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)
+static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep, unsigned long address)
+{
+}
 #endif
 
 /**
@@ -608,6 +618,26 @@ static inline void tlb_flush_p4d_range(struct mmu_gather *tlb,
 		__tlb_remove_tlb_entry(tlb, ptep, address);	\
 	} while (0)
 
+/**
+ * tlb_remove_tlb_entries - remember unmapping of multiple consecutive ptes for
+ *			    later tlb invalidation.
+ *
+ * Similar to tlb_remove_tlb_entry(), but remember unmapping of multiple
+ * consecutive ptes instead of only a single one.
+ */
+static inline void tlb_remove_tlb_entries(struct mmu_gather *tlb,
+		pte_t *ptep, unsigned int nr, unsigned long address)
+{
+	tlb_flush_pte_range(tlb, address, PAGE_SIZE * nr);
+	for (;;) {
+		__tlb_remove_tlb_entry(tlb, ptep, address);
+		if (--nr == 0)
+			break;
+		ptep++;
+		address += PAGE_SIZE;
+	}
+}
+
 #define tlb_remove_huge_tlb_entry(h, tlb, ptep, address)	\
 	do {							\
 		unsigned long _sz = huge_page_size(h);		\