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
757 B
C
33 lines
757 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* ucall support. A ucall is a "hypercall to userspace".
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*
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* Copyright (C) 2021 Western Digital Corporation or its affiliates.
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*/
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#include <linux/kvm.h>
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#include "kvm_util.h"
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#include "processor.h"
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#include "sbi.h"
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void *ucall_arch_get_ucall(struct kvm_vcpu *vcpu)
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{
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struct kvm_run *run = vcpu->run;
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if (run->exit_reason == KVM_EXIT_RISCV_SBI &&
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run->riscv_sbi.extension_id == KVM_RISCV_SELFTESTS_SBI_EXT) {
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switch (run->riscv_sbi.function_id) {
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case KVM_RISCV_SELFTESTS_SBI_UCALL:
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return (void *)run->riscv_sbi.args[0];
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case KVM_RISCV_SELFTESTS_SBI_UNEXP:
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vcpu_dump(stderr, vcpu, 2);
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TEST_ASSERT(0, "Unexpected trap taken by guest");
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break;
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default:
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break;
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}
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}
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return NULL;
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}
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