Date: Fri, 30 Aug 2013 07:42:38 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r255058 - head/sys/amd64/include Message-ID: <201308300742.r7U7gcEw053190@svn.freebsd.org>
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Author: kib Date: Fri Aug 30 07:42:38 2013 New Revision: 255058 URL: http://svnweb.freebsd.org/changeset/base/255058 Log: Provide a wrapper for the INVPCID instruction, definition of the descriptor and symbolic names for the operation types. Sponsored by: The FreeBSD Foundation Reviewed by: alc Tested by: pho, bf Modified: head/sys/amd64/include/cpufunc.h Modified: head/sys/amd64/include/cpufunc.h ============================================================================== --- head/sys/amd64/include/cpufunc.h Fri Aug 30 07:37:45 2013 (r255057) +++ head/sys/amd64/include/cpufunc.h Fri Aug 30 07:42:38 2013 (r255058) @@ -472,6 +472,26 @@ invlpg(u_long addr) __asm __volatile("invlpg %0" : : "m" (*(char *)addr) : "memory"); } +#define INVPCID_ADDR 0 +#define INVPCID_CTX 1 +#define INVPCID_CTXGLOB 2 +#define INVPCID_ALLCTX 3 + +struct invpcid_descr { + uint64_t pcid:12 __packed; + uint64_t pad:52 __packed; + uint64_t addr; +} __packed; + +static __inline void +invpcid(struct invpcid_descr *d, int type) +{ + + /* invpcid (%rdx),%rax */ + __asm __volatile(".byte 0x66,0x0f,0x38,0x82,0x02" + : : "d" (d), "a" ((u_long)type) : "memory"); +} + static __inline u_short rfs(void) {
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