Author: rrs
Date: Thu Jun 7 19:57:55 2018
New Revision: 334813
URL: https://svnweb.freebsd.org/changeset/base/334813
Log:
Fix build issue with const and volatile and the
myriad ways that the various compliers treat this. The
only safe prefetch appears to be for AMD. The other
compilers either are not volatile or are not const :(
Reported by: Michael Tuexen
Modified:
head/sys/sys/kern_prefetch.h
Modified: head/sys/sys/kern_prefetch.h
==============================================================================
--- head/sys/sys/kern_prefetch.h Thu Jun 7 19:48:49 2018
(r334812)
+++ head/sys/sys/kern_prefetch.h Thu Jun 7 19:57:55 2018
(r334813)
@@ -34,7 +34,7 @@ kern_prefetch(const volatile void *addr, void* before)
#if defined(__amd64__)
__asm __volatile("prefetcht1 (%1)":"=rm"(*((int32_t
*)before)):"r"(addr):);
#else
- __builtin_prefetch(addr);
+/* __builtin_prefetch(addr);*/
#endif
}
_______________________________________________
svn-src-all@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
