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| author | Konstantin Belousov <kib@FreeBSD.org> | 2019-11-24 19:02:13 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2019-11-24 19:02:13 +0000 |
| commit | 13189065cb335587089d305a6e9b2170564db7a3 (patch) | |
| tree | 85d28789591bcbe9186770cce0a887fdcb9938a9 /sys/amd64/include | |
| parent | 515a40d5d9bfae91e4c063cf862894d16dae20e5 (diff) | |
| download | src-13189065cb335587089d305a6e9b2170564db7a3.tar.gz src-13189065cb335587089d305a6e9b2170564db7a3.zip | |
amd64: assert that EARLY_COUNTER does not corrupt memory.
Reviewed by: imp
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D22514
Notes
Notes:
svn path=/head/; revision=355060
Diffstat (limited to 'sys/amd64/include')
| -rw-r--r-- | sys/amd64/include/counter.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/amd64/include/counter.h b/sys/amd64/include/counter.h index cc68da61928d..cc0e74064a5f 100644 --- a/sys/amd64/include/counter.h +++ b/sys/amd64/include/counter.h @@ -82,6 +82,7 @@ static inline void counter_u64_add(counter_u64_t c, int64_t inc) { + KASSERT(IS_BSP() || c != EARLY_COUNTER, ("EARLY_COUNTER used on AP")); __asm __volatile("addq\t%1,%%gs:(%0)" : : "r" ((char *)c - (char *)&__pcpu[0]), "ri" (inc) |