cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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mshyperv.h (1387B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2
      3/*
      4 * Linux-specific definitions for managing interactions with Microsoft's
      5 * Hyper-V hypervisor. The definitions in this file are specific to
      6 * the ARM64 architecture.  See include/asm-generic/mshyperv.h for
      7 * definitions are that architecture independent.
      8 *
      9 * Definitions that are specified in the Hyper-V Top Level Functional
     10 * Spec (TLFS) should not go in this file, but should instead go in
     11 * hyperv-tlfs.h.
     12 *
     13 * Copyright (C) 2021, Microsoft, Inc.
     14 *
     15 * Author : Michael Kelley <mikelley@microsoft.com>
     16 */
     17
     18#ifndef _ASM_MSHYPERV_H
     19#define _ASM_MSHYPERV_H
     20
     21#include <linux/types.h>
     22#include <linux/arm-smccc.h>
     23#include <asm/hyperv-tlfs.h>
     24
     25/*
     26 * Declare calls to get and set Hyper-V VP register values on ARM64, which
     27 * requires a hypercall.
     28 */
     29
     30void hv_set_vpreg(u32 reg, u64 value);
     31u64 hv_get_vpreg(u32 reg);
     32void hv_get_vpreg_128(u32 reg, struct hv_get_vp_registers_output *result);
     33
     34static inline void hv_set_register(unsigned int reg, u64 value)
     35{
     36	hv_set_vpreg(reg, value);
     37}
     38
     39static inline u64 hv_get_register(unsigned int reg)
     40{
     41	return hv_get_vpreg(reg);
     42}
     43
     44/* SMCCC hypercall parameters */
     45#define HV_SMCCC_FUNC_NUMBER	1
     46#define HV_FUNC_ID	ARM_SMCCC_CALL_VAL(			\
     47				ARM_SMCCC_STD_CALL,		\
     48				ARM_SMCCC_SMC_64,		\
     49				ARM_SMCCC_OWNER_VENDOR_HYP,	\
     50				HV_SMCCC_FUNC_NUMBER)
     51
     52#include <asm-generic/mshyperv.h>
     53
     54#endif