[src/trunk]: src/sys/external/bsd/drm2/include/asm Bogus clflushopt that just...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/232723e8c65a
branches:  trunk
changeset: 1028017:232723e8c65a
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sun Dec 19 01:39:34 2021 +0000

description:
Bogus clflushopt that just does clflush for now.

diffstat:

 sys/external/bsd/drm2/include/asm/processor.h |  11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diffs (23 lines):

diff -r c9ca373036ba -r 232723e8c65a sys/external/bsd/drm2/include/asm/processor.h
--- a/sys/external/bsd/drm2/include/asm/processor.h     Sun Dec 19 01:39:27 2021 +0000
+++ b/sys/external/bsd/drm2/include/asm/processor.h     Sun Dec 19 01:39:34 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: processor.h,v 1.4 2021/05/31 10:33:04 riastradh Exp $  */
+/*     $NetBSD: processor.h,v 1.5 2021/12/19 01:39:34 riastradh Exp $  */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -36,4 +36,13 @@
 
 #define        cpu_relax()     DELAY(1)        /* XXX */
 
+#if defined(__i386__) || defined(__x86_64__)
+static inline void
+clflushopt(void *p)
+{
+       /* XXX Test CPUID bit, use CLFLUSHOPT...  */
+       asm volatile ("clflush %0" : : "m" (*(const char *)p));
+}
+#endif
+
 #endif  /* _ASM_PROCESSOR_H_ */