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| author | kib <kib@FreeBSD.org> | 2013-08-30 07:42:38 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2013-08-30 07:42:38 +0000 |
| commit | f8c0849efff16d60a8ceaa0515e45d857fdbad0c (patch) | |
| tree | 510e86d35ef762e86057edb62728904b8955ab3d /sys/amd64/include | |
| parent | dc9c173247c790c181a79be41f9f9218a09e91de (diff) | |
| download | FreeBSD-src-f8c0849efff16d60a8ceaa0515e45d857fdbad0c.zip FreeBSD-src-f8c0849efff16d60a8ceaa0515e45d857fdbad0c.tar.gz | |
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
Diffstat (limited to 'sys/amd64/include')
| -rw-r--r-- | sys/amd64/include/cpufunc.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sys/amd64/include/cpufunc.h b/sys/amd64/include/cpufunc.h index 881fcd2..3d381c6 100644 --- a/sys/amd64/include/cpufunc.h +++ b/sys/amd64/include/cpufunc.h @@ -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) { |
