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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ptp_kvm_arm.c (533B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 *  Virtual PTP 1588 clock for use with KVM guests
      4 *  Copyright (C) 2019 ARM Ltd.
      5 *  All Rights Reserved
      6 */
      7
      8#include <linux/arm-smccc.h>
      9#include <linux/ptp_kvm.h>
     10
     11#include <asm/arch_timer.h>
     12#include <asm/hypervisor.h>
     13
     14int kvm_arch_ptp_init(void)
     15{
     16	int ret;
     17
     18	ret = kvm_arm_hyp_service_available(ARM_SMCCC_KVM_FUNC_PTP);
     19	if (ret <= 0)
     20		return -EOPNOTSUPP;
     21
     22	return 0;
     23}
     24
     25int kvm_arch_ptp_get_clock(struct timespec64 *ts)
     26{
     27	return kvm_arch_ptp_get_crosststamp(NULL, ts, NULL);
     28}