debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/arch/powerpc/mm/book3s64/radix_pgtable.c
..
..
@@ -783,9 +783,9 @@
783
783
 }
784
784
 
785
785
 static void remove_pte_table(pte_t *pte_start, unsigned long addr,
786
-			     unsigned long end)
786
+			     unsigned long end, bool direct)
787
787
 {
788
-	unsigned long next;
788
+	unsigned long next, pages = 0;
789
789
 	pte_t *pte;
790
790
 
791
791
 	pte = pte_start + pte_index(addr);
..
..
@@ -807,13 +807,16 @@
807
807
 		}
808
808
 
809
809
 		pte_clear(&init_mm, addr, pte);
810
+		pages++;
810
811
 	}
812
+	if (direct)
813
+		update_page_count(mmu_virtual_psize, -pages);
811
814
 }
812
815
 
813
816
 static void __meminit remove_pmd_table(pmd_t *pmd_start, unsigned long addr,
814
-			     unsigned long end)
817
+				       unsigned long end, bool direct)
815
818
 {
816
-	unsigned long next;
819
+	unsigned long next, pages = 0;
817
820
 	pte_t *pte_base;
818
821
 	pmd_t *pmd;
819
822
 
..
..
@@ -831,19 +834,22 @@
831
834
 				continue;
832
835
 			}
833
836
 			pte_clear(&init_mm, addr, (pte_t *)pmd);
837
+			pages++;
834
838
 			continue;
835
839
 		}
836
840
 
837
841
 		pte_base = (pte_t *)pmd_page_vaddr(*pmd);
838
-		remove_pte_table(pte_base, addr, next);
842
+		remove_pte_table(pte_base, addr, next, direct);
839
843
 		free_pte_table(pte_base, pmd);
840
844
 	}
845
+	if (direct)
846
+		update_page_count(MMU_PAGE_2M, -pages);
841
847
 }
842
848
 
843
849
 static void __meminit remove_pud_table(pud_t *pud_start, unsigned long addr,
844
-			     unsigned long end)
850
+				       unsigned long end, bool direct)
845
851
 {
846
-	unsigned long next;
852
+	unsigned long next, pages = 0;
847
853
 	pmd_t *pmd_base;
848
854
 	pud_t *pud;
849
855
 
..
..
@@ -861,16 +867,20 @@
861
867
 				continue;
862
868
 			}
863
869
 			pte_clear(&init_mm, addr, (pte_t *)pud);
870
+			pages++;
864
871
 			continue;
865
872
 		}
866
873
 
867
-		pmd_base = (pmd_t *)pud_page_vaddr(*pud);
868
-		remove_pmd_table(pmd_base, addr, next);
874
+		pmd_base = pud_pgtable(*pud);
875
+		remove_pmd_table(pmd_base, addr, next, direct);
869
876
 		free_pmd_table(pmd_base, pud);
870
877
 	}
878
+	if (direct)
879
+		update_page_count(MMU_PAGE_1G, -pages);
871
880
 }
872
881
 
873
-static void __meminit remove_pagetable(unsigned long start, unsigned long end)
882
+static void __meminit remove_pagetable(unsigned long start, unsigned long end,
883
+				       bool direct)
874
884
 {
875
885
 	unsigned long addr, next;
876
886
 	pud_t *pud_base;
..
..
@@ -898,8 +908,8 @@
898
908
 			continue;
899
909
 		}
900
910
 
901
-		pud_base = (pud_t *)p4d_page_vaddr(*p4d);
902
-		remove_pud_table(pud_base, addr, next);
911
+		pud_base = p4d_pgtable(*p4d);
912
+		remove_pud_table(pud_base, addr, next, direct);
903
913
 		free_pud_table(pud_base, p4d);
904
914
 	}
905
915
 
..
..
@@ -922,7 +932,7 @@
922
932
 
923
933
 int __meminit radix__remove_section_mapping(unsigned long start, unsigned long end)
924
934
 {
925
-	remove_pagetable(start, end);
935
+	remove_pagetable(start, end, true);
926
936
 	return 0;
927
937
 }
928
938
 #endif /* CONFIG_MEMORY_HOTPLUG */
..
..
@@ -958,7 +968,7 @@
958
968
 #ifdef CONFIG_MEMORY_HOTPLUG
959
969
 void __meminit radix__vmemmap_remove_mapping(unsigned long start, unsigned long page_size)
960
970
 {
961
-	remove_pagetable(start, start + page_size);
971
+	remove_pagetable(start, start + page_size, false);
962
972
 }
963
973
 #endif
964
974
 #endif
..
..
@@ -1064,8 +1074,8 @@
1064
1074
 				  pte_t entry, unsigned long address, int psize)
1065
1075
 {
1066
1076
 	struct mm_struct *mm = vma->vm_mm;
1067
-	unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED |
1068
-					      _PAGE_RW | _PAGE_EXEC);
1077
+	unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_SOFT_DIRTY |
1078
+					      _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC);
1069
1079
 
1070
1080
 	unsigned long change = pte_val(entry) ^ pte_val(*ptep);
1071
1081
 	/*
..
..
@@ -1156,7 +1166,7 @@
1156
1166
 	pmd_t *pmd;
1157
1167
 	int i;
1158
1168
 
1159
-	pmd = (pmd_t *)pud_page_vaddr(*pud);
1169
+	pmd = pud_pgtable(*pud);
1160
1170
 	pud_clear(pud);
1161
1171
 
1162
1172
 	flush_tlb_kernel_range(addr, addr + PUD_SIZE);