Changeset cd0a38e in mainline

Timestamp:

2022-02-10T23:37:51Z (3 years ago)

Author:

Jakub Jermář <jakub@…>

Branches:

master, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

917324b

Parents:

6ddd7f8

git-author:

Jakub Jermář <jakub@…> (2022-02-10 23:37:48)

git-committer:

Jakub Jermář <jakub@…> (2022-02-10 23:37:51)

Message:

Make km_unmap() right also on the other CPUs

The TLB shootdown sequence must not invalidate the entire kernel ASID
either on the non-current CPUs.

File:

• kernel/generic/src/mm/km.c (modified) (1 diff)

kernel/generic/src/mm/km.c

@@ -166 +166 @@
         page_table_lock(AS_KERNEL, true);
 
-        ipl = tlb_shootdown_start(TLB_INVL_ASID, ASID_KERNEL, 0, 0);
+        size_t pages = size >> PAGE_WIDTH;
+        ipl = tlb_shootdown_start(TLB_INVL_PAGES, ASID_KERNEL, vaddr, pages);
 
         for (offs = 0; offs < size; offs += PAGE_SIZE)
                 page_mapping_remove(AS_KERNEL, vaddr + offs);
 
-        tlb_invalidate_pages(ASID_KERNEL, vaddr, size >> PAGE_WIDTH);
+        tlb_invalidate_pages(ASID_KERNEL, vaddr, pages);
 
         as_invalidate_translation_cache(AS_KERNEL, 0, -1);