Merge tag 'v6.1-rc6' into x86/core, to resolve conflicts

Resolve conflicts between these commits in arch/x86/kernel/asm-offsets.c:

 # upstream:
 debc5a1ec0d1 ("KVM: x86: use a separate asm-offsets.c file")

 # retbleed work in x86/core:
 5d8213864ade ("x86/retbleed: Add SKL return thunk")

... and these commits in include/linux/bpf.h:

  # upstram:
  18acb7fac22f ("bpf: Revert ("Fix dispatcher patchable function entry to 5 bytes nop")")

  # x86/core commits:
  931ab63664f0 ("x86/ibt: Implement FineIBT")
  bea75b33895f ("x86/Kconfig: Introduce function padding")

The latter two modify BPF_DISPATCHER_ATTRIBUTES(), which was removed upstream.

 Conflicts:
	arch/x86/kernel/asm-offsets.c
	include/linux/bpf.h

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/include/linux/kmsan_string.h b/include/linux/kmsan_string.h
new file mode 100644
index 000000000000..7287da6f52ef
--- /dev/null
+++ b/include/linux/kmsan_string.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * KMSAN string functions API used in other headers.
+ *
+ * Copyright (C) 2022 Google LLC
+ * Author: Alexander Potapenko <glider@google.com>
+ *
+ */
+#ifndef _LINUX_KMSAN_STRING_H
+#define _LINUX_KMSAN_STRING_H
+
+/*
+ * KMSAN overrides the default memcpy/memset/memmove implementations in the
+ * kernel, which requires having __msan_XXX function prototypes in several other
+ * headers. Keep them in one place instead of open-coding.
+ */
+void *__msan_memcpy(void *dst, const void *src, size_t size);
+void *__msan_memset(void *s, int c, size_t n);
+void *__msan_memmove(void *dest, const void *src, size_t len);
+
+#endif /* _LINUX_KMSAN_STRING_H */