mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 21:57:43 +00:00
1a3b0caeb7
Unclutter tlbflush.h a little. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Laight <David.Laight@aculab.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Eduardo Valentin <eduval@amazon.com> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: aliguori@amazon.com Cc: daniel.gruss@iaik.tugraz.at Cc: hughd@google.com Cc: keescook@google.com Cc: linux-mm@kvack.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_X86_INVPCID
|
|
#define _ASM_X86_INVPCID
|
|
|
|
static inline void __invpcid(unsigned long pcid, unsigned long addr,
|
|
unsigned long type)
|
|
{
|
|
struct { u64 d[2]; } desc = { { pcid, addr } };
|
|
|
|
/*
|
|
* The memory clobber is because the whole point is to invalidate
|
|
* stale TLB entries and, especially if we're flushing global
|
|
* mappings, we don't want the compiler to reorder any subsequent
|
|
* memory accesses before the TLB flush.
|
|
*
|
|
* The hex opcode is invpcid (%ecx), %eax in 32-bit mode and
|
|
* invpcid (%rcx), %rax in long mode.
|
|
*/
|
|
asm volatile (".byte 0x66, 0x0f, 0x38, 0x82, 0x01"
|
|
: : "m" (desc), "a" (type), "c" (&desc) : "memory");
|
|
}
|
|
|
|
#define INVPCID_TYPE_INDIV_ADDR 0
|
|
#define INVPCID_TYPE_SINGLE_CTXT 1
|
|
#define INVPCID_TYPE_ALL_INCL_GLOBAL 2
|
|
#define INVPCID_TYPE_ALL_NON_GLOBAL 3
|
|
|
|
/* Flush all mappings for a given pcid and addr, not including globals. */
|
|
static inline void invpcid_flush_one(unsigned long pcid,
|
|
unsigned long addr)
|
|
{
|
|
__invpcid(pcid, addr, INVPCID_TYPE_INDIV_ADDR);
|
|
}
|
|
|
|
/* Flush all mappings for a given PCID, not including globals. */
|
|
static inline void invpcid_flush_single_context(unsigned long pcid)
|
|
{
|
|
__invpcid(pcid, 0, INVPCID_TYPE_SINGLE_CTXT);
|
|
}
|
|
|
|
/* Flush all mappings, including globals, for all PCIDs. */
|
|
static inline void invpcid_flush_all(void)
|
|
{
|
|
__invpcid(0, 0, INVPCID_TYPE_ALL_INCL_GLOBAL);
|
|
}
|
|
|
|
/* Flush all mappings for all PCIDs except globals. */
|
|
static inline void invpcid_flush_all_nonglobals(void)
|
|
{
|
|
__invpcid(0, 0, INVPCID_TYPE_ALL_NON_GLOBAL);
|
|
}
|
|
|
|
#endif /* _ASM_X86_INVPCID */
|