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| author | kib <kib@FreeBSD.org> | 2012-08-01 17:24:53 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2012-08-01 17:24:53 +0000 |
| commit | 36babd37ca7f9addb238b81428902b296c388a0b (patch) | |
| tree | 8776c93cddf827440e35f70225b9eea7d3772b7a | |
| parent | 9c4b62fad8853cdccbe2f3a1900de7ec19bb52ca (diff) | |
| download | FreeBSD-src-36babd37ca7f9addb238b81428902b296c388a0b.zip FreeBSD-src-36babd37ca7f9addb238b81428902b296c388a0b.tar.gz | |
Add lfence().
MFC after: 1 week
| -rw-r--r-- | sys/amd64/include/cpufunc.h | 7 | ||||
| -rw-r--r-- | sys/i386/include/cpufunc.h | 7 |
2 files changed, 14 insertions, 0 deletions
diff --git a/sys/amd64/include/cpufunc.h b/sys/amd64/include/cpufunc.h index 94d4133..881fcd2 100644 --- a/sys/amd64/include/cpufunc.h +++ b/sys/amd64/include/cpufunc.h @@ -290,6 +290,13 @@ popcntq(u_long mask) } static __inline void +lfence(void) +{ + + __asm __volatile("lfence" : : : "memory"); +} + +static __inline void mfence(void) { diff --git a/sys/i386/include/cpufunc.h b/sys/i386/include/cpufunc.h index 62d268d..7cd3663 100644 --- a/sys/i386/include/cpufunc.h +++ b/sys/i386/include/cpufunc.h @@ -155,6 +155,13 @@ cpu_mwait(u_long extensions, u_int hints) } static __inline void +lfence(void) +{ + + __asm __volatile("lfence" : : : "memory"); +} + +static __inline void mfence(void) { |
