Thread (92 messages) 92 messages, 7 authors, 2022-11-22
STALE1407d REVIEWED: 6 (4M)

Revision v3 of 8 in this series; 5 review trailers.

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  2. v3 current
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  8. v9 [diff vs current]

[PATCH v3 13/37] mm: Move VM_UFFD_MINOR_BIT from 37 to 38

From: Rick Edgecombe <rick.p.edgecombe@intel.com>
Date: 2022-11-04 22:41:39
Also in: linux-arch, linux-doc, linux-mm, lkml
Subsystem: memory management - core, the rest · Maintainers: Andrew Morton, David Hildenbrand, Linus Torvalds

From: Yu-cheng Yu <redacted>

To introduce VM_SHADOW_STACK as VM_HIGH_ARCH_BIT (37), and make all
VM_HIGH_ARCH_BITs stay together, move VM_UFFD_MINOR_BIT from 37 to 38.

Tested-by: Pengfei Xu <redacted>
Tested-by: John Allen <john.allen@amd.com>
Reviewed-by: Kees Cook <redacted>
Acked-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Yu-cheng Yu <redacted>
Reviewed-by: Axel Rasmussen <axelrasmussen@google.com>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Mike Kravetz <redacted>
---
 include/linux/mm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 8bbcccbc5565..5314ad0a342d 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -365,7 +365,7 @@ extern unsigned int kobjsize(const void *objp);
 #endif
 
 #ifdef CONFIG_HAVE_ARCH_USERFAULTFD_MINOR
-# define VM_UFFD_MINOR_BIT	37
+# define VM_UFFD_MINOR_BIT	38
 # define VM_UFFD_MINOR		BIT(VM_UFFD_MINOR_BIT)	/* UFFD minor faults */
 #else /* !CONFIG_HAVE_ARCH_USERFAULTFD_MINOR */
 # define VM_UFFD_MINOR		VM_NONE
-- 
2.17.1
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