invpcid.h (1487B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _ASM_X86_INVPCID 3#define _ASM_X86_INVPCID 4 5static inline void __invpcid(unsigned long pcid, unsigned long addr, 6 unsigned long type) 7{ 8 struct { u64 d[2]; } desc = { { pcid, addr } }; 9 10 /* 11 * The memory clobber is because the whole point is to invalidate 12 * stale TLB entries and, especially if we're flushing global 13 * mappings, we don't want the compiler to reorder any subsequent 14 * memory accesses before the TLB flush. 15 */ 16 asm volatile("invpcid %[desc], %[type]" 17 :: [desc] "m" (desc), [type] "r" (type) : "memory"); 18} 19 20#define INVPCID_TYPE_INDIV_ADDR 0 21#define INVPCID_TYPE_SINGLE_CTXT 1 22#define INVPCID_TYPE_ALL_INCL_GLOBAL 2 23#define INVPCID_TYPE_ALL_NON_GLOBAL 3 24 25/* Flush all mappings for a given pcid and addr, not including globals. */ 26static inline void invpcid_flush_one(unsigned long pcid, 27 unsigned long addr) 28{ 29 __invpcid(pcid, addr, INVPCID_TYPE_INDIV_ADDR); 30} 31 32/* Flush all mappings for a given PCID, not including globals. */ 33static inline void invpcid_flush_single_context(unsigned long pcid) 34{ 35 __invpcid(pcid, 0, INVPCID_TYPE_SINGLE_CTXT); 36} 37 38/* Flush all mappings, including globals, for all PCIDs. */ 39static inline void invpcid_flush_all(void) 40{ 41 __invpcid(0, 0, INVPCID_TYPE_ALL_INCL_GLOBAL); 42} 43 44/* Flush all mappings for all PCIDs except globals. */ 45static inline void invpcid_flush_all_nonglobals(void) 46{ 47 __invpcid(0, 0, INVPCID_TYPE_ALL_NON_GLOBAL); 48} 49 50#endif /* _ASM_X86_INVPCID */