Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
33 lines
567 B
C
33 lines
567 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Virtual PTP 1588 clock for use with KVM guests
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* Copyright (C) 2019 ARM Ltd.
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* All Rights Reserved
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*/
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#include <linux/arm-smccc.h>
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#include <linux/ptp_kvm.h>
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#include <asm/arch_timer.h>
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#include <asm/hypervisor.h>
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int kvm_arch_ptp_init(void)
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{
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int ret;
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ret = kvm_arm_hyp_service_available(ARM_SMCCC_KVM_FUNC_PTP);
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if (ret <= 0)
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return -EOPNOTSUPP;
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return 0;
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}
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void kvm_arch_ptp_exit(void)
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{
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}
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int kvm_arch_ptp_get_clock(struct timespec64 *ts)
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{
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return kvm_arch_ptp_get_crosststamp(NULL, ts, NULL);
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}
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