tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0-only
2
3/*
4 * Privileged (non-hypervisor) host registers to save.
5 */
6struct p9_host_os_sprs {
7 unsigned long iamr;
8 unsigned long amr;
9
10 unsigned int pmc1;
11 unsigned int pmc2;
12 unsigned int pmc3;
13 unsigned int pmc4;
14 unsigned int pmc5;
15 unsigned int pmc6;
16 unsigned long mmcr0;
17 unsigned long mmcr1;
18 unsigned long mmcr2;
19 unsigned long mmcr3;
20 unsigned long mmcra;
21 unsigned long siar;
22 unsigned long sier1;
23 unsigned long sier2;
24 unsigned long sier3;
25 unsigned long sdar;
26};
27
28static inline bool nesting_enabled(struct kvm *kvm)
29{
30 return kvm->arch.nested_enable && kvm_is_radix(kvm);
31}
32
33bool load_vcpu_state(struct kvm_vcpu *vcpu,
34 struct p9_host_os_sprs *host_os_sprs);
35void store_vcpu_state(struct kvm_vcpu *vcpu);
36void save_p9_host_os_sprs(struct p9_host_os_sprs *host_os_sprs);
37void restore_p9_host_os_sprs(struct kvm_vcpu *vcpu,
38 struct p9_host_os_sprs *host_os_sprs);
39void switch_pmu_to_guest(struct kvm_vcpu *vcpu,
40 struct p9_host_os_sprs *host_os_sprs);
41void switch_pmu_to_host(struct kvm_vcpu *vcpu,
42 struct p9_host_os_sprs *host_os_sprs);
43
44#ifdef CONFIG_KVM_BOOK3S_HV_P9_TIMING
45void accumulate_time(struct kvm_vcpu *vcpu, struct kvmhv_tb_accumulator *next);
46#define start_timing(vcpu, next) accumulate_time(vcpu, next)
47#define end_timing(vcpu) accumulate_time(vcpu, NULL)
48#else
49#define accumulate_time(vcpu, next) do {} while (0)
50#define start_timing(vcpu, next) do {} while (0)
51#define end_timing(vcpu) do {} while (0)
52#endif