mirror of
https://github.com/torvalds/linux.git
synced 2024-12-04 01:51:34 +00:00
1a48ce9264
* kvm-arm64/psci-1.1:
: .
: Limited PSCI-1.1 support from Will Deacon:
:
: This small series exposes the PSCI SYSTEM_RESET2 call to guests, which
: allows the propagation of a "reset_type" and a "cookie" back to the VMM.
: Although Linux guests only ever pass 0 for the type ("SYSTEM_WARM_RESET"),
: the vendor-defined range can be used by a bootloader to provide additional
: information about the reset, such as an error code.
: .
KVM: arm64: Remove unneeded semicolons
KVM: arm64: Indicate SYSTEM_RESET2 in kvm_run::system_event flags field
KVM: arm64: Expose PSCI SYSTEM_RESET2 call to the guest
KVM: arm64: Bump guest PSCI version to 1.1
Signed-off-by: Marc Zyngier <maz@kernel.org>
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2012,2013 - ARM Ltd
|
|
* Author: Marc Zyngier <marc.zyngier@arm.com>
|
|
*/
|
|
|
|
#ifndef __KVM_ARM_PSCI_H__
|
|
#define __KVM_ARM_PSCI_H__
|
|
|
|
#include <linux/kvm_host.h>
|
|
#include <uapi/linux/psci.h>
|
|
|
|
#define KVM_ARM_PSCI_0_1 PSCI_VERSION(0, 1)
|
|
#define KVM_ARM_PSCI_0_2 PSCI_VERSION(0, 2)
|
|
#define KVM_ARM_PSCI_1_0 PSCI_VERSION(1, 0)
|
|
#define KVM_ARM_PSCI_1_1 PSCI_VERSION(1, 1)
|
|
|
|
#define KVM_ARM_PSCI_LATEST KVM_ARM_PSCI_1_1
|
|
|
|
static inline int kvm_psci_version(struct kvm_vcpu *vcpu)
|
|
{
|
|
/*
|
|
* Our PSCI implementation stays the same across versions from
|
|
* v0.2 onward, only adding the few mandatory functions (such
|
|
* as FEATURES with 1.0) that are required by newer
|
|
* revisions. It is thus safe to return the latest, unless
|
|
* userspace has instructed us otherwise.
|
|
*/
|
|
if (test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features)) {
|
|
if (vcpu->kvm->arch.psci_version)
|
|
return vcpu->kvm->arch.psci_version;
|
|
|
|
return KVM_ARM_PSCI_LATEST;
|
|
}
|
|
|
|
return KVM_ARM_PSCI_0_1;
|
|
}
|
|
|
|
|
|
int kvm_psci_call(struct kvm_vcpu *vcpu);
|
|
|
|
struct kvm_one_reg;
|
|
|
|
int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu);
|
|
int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
|
|
int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
|
|
int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
|
|
|
|
#endif /* __KVM_ARM_PSCI_H__ */
|