git: e5caed14067b - main - kmsan: Use __builtin_memset to initialize per-thread state

From: Mark Johnston <markj_at_FreeBSD.org>
Date: Tue, 17 Oct 2023 13:37:03 UTC
The branch main has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=e5caed14067b40f1454d74e99789a28508d0eea3

commit e5caed14067b40f1454d74e99789a28508d0eea3
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2023-10-16 19:37:19 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2023-10-17 13:05:45 +0000

    kmsan: Use __builtin_memset to initialize per-thread state
    
    Accesses to KMSAN's TLS block are not instrumented, so there's no need
    to use kmsan_memset().  No functional change intended.
    
    MFC after:      1 week
    Sponsored by:   Klara, Inc.
    Sponsored by:   Juniper Networks, Inc.
---
 sys/kern/subr_msan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/kern/subr_msan.c b/sys/kern/subr_msan.c
index 54948370a14a..f8fdcf478b79 100644
--- a/sys/kern/subr_msan.c
+++ b/sys/kern/subr_msan.c
@@ -452,7 +452,7 @@ kmsan_thread_alloc(struct thread *td)
 		    sizeof(int));
 		mtd = malloc(sizeof(*mtd), M_KMSAN, M_WAITOK);
 	}
-	kmsan_memset(mtd, 0, sizeof(*mtd));
+	__builtin_memset(mtd, 0, sizeof(*mtd));
 	mtd->ctx = 0;
 
 	if (td->td_kstack != 0)