Contributors: 10
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Quentin Perret |
275 |
65.48% |
21 |
44.68% |
| Will Deacon |
65 |
15.48% |
9 |
19.15% |
| Fuad Tabba |
24 |
5.71% |
1 |
2.13% |
| Vincent Donnefort |
19 |
4.52% |
5 |
10.64% |
| David Brazdil |
18 |
4.29% |
3 |
6.38% |
| Marc Zyngier |
11 |
2.62% |
3 |
6.38% |
| Andrew Scull |
4 |
0.95% |
2 |
4.26% |
| Lorenzo Pieralisi |
2 |
0.48% |
1 |
2.13% |
| Sudeep Holla |
1 |
0.24% |
1 |
2.13% |
| Thomas Gleixner |
1 |
0.24% |
1 |
2.13% |
| Total |
420 |
|
47 |
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2020 Google LLC
* Author: Quentin Perret <qperret@google.com>
*/
#ifndef __KVM_NVHE_MEM_PROTECT__
#define __KVM_NVHE_MEM_PROTECT__
#include <linux/kvm_host.h>
#include <asm/kvm_hyp.h>
#include <asm/kvm_mmu.h>
#include <asm/kvm_pgtable.h>
#include <asm/virt.h>
#include <nvhe/memory.h>
#include <nvhe/pkvm.h>
#include <nvhe/spinlock.h>
struct host_mmu {
struct kvm_arch arch;
struct kvm_pgtable pgt;
struct kvm_pgtable_mm_ops mm_ops;
hyp_spinlock_t lock;
};
extern struct host_mmu host_mmu;
/* This corresponds to page-table locking order */
enum pkvm_component_id {
PKVM_ID_HOST,
PKVM_ID_HYP,
PKVM_ID_FFA,
};
extern unsigned long hyp_nr_cpus;
int __pkvm_prot_finalize(void);
int __pkvm_host_share_hyp(u64 pfn);
int __pkvm_host_unshare_hyp(u64 pfn);
int __pkvm_host_donate_hyp(u64 pfn, u64 nr_pages);
int __pkvm_hyp_donate_host(u64 pfn, u64 nr_pages);
int __pkvm_host_share_ffa(u64 pfn, u64 nr_pages);
int __pkvm_host_unshare_ffa(u64 pfn, u64 nr_pages);
int __pkvm_host_share_guest(u64 pfn, u64 gfn, u64 nr_pages, struct pkvm_hyp_vcpu *vcpu,
enum kvm_pgtable_prot prot);
int __pkvm_host_unshare_guest(u64 gfn, u64 nr_pages, struct pkvm_hyp_vm *hyp_vm);
int __pkvm_host_relax_perms_guest(u64 gfn, struct pkvm_hyp_vcpu *vcpu, enum kvm_pgtable_prot prot);
int __pkvm_host_wrprotect_guest(u64 gfn, u64 nr_pages, struct pkvm_hyp_vm *hyp_vm);
int __pkvm_host_test_clear_young_guest(u64 gfn, u64 nr_pages, bool mkold, struct pkvm_hyp_vm *vm);
int __pkvm_host_mkyoung_guest(u64 gfn, struct pkvm_hyp_vcpu *vcpu);
bool addr_is_memory(phys_addr_t phys);
int host_stage2_idmap_locked(phys_addr_t addr, u64 size, enum kvm_pgtable_prot prot);
int host_stage2_set_owner_locked(phys_addr_t addr, u64 size, u8 owner_id);
int kvm_host_prepare_stage2(void *pgt_pool_base);
int kvm_guest_prepare_stage2(struct pkvm_hyp_vm *vm, void *pgd);
void handle_host_mem_abort(struct kvm_cpu_context *host_ctxt);
int hyp_pin_shared_mem(void *from, void *to);
void hyp_unpin_shared_mem(void *from, void *to);
void reclaim_pgtable_pages(struct pkvm_hyp_vm *vm, struct kvm_hyp_memcache *mc);
int refill_memcache(struct kvm_hyp_memcache *mc, unsigned long min_pages,
struct kvm_hyp_memcache *host_mc);
static __always_inline void __load_host_stage2(void)
{
if (static_branch_likely(&kvm_protected_mode_initialized))
__load_stage2(&host_mmu.arch.mmu, &host_mmu.arch);
else
write_sysreg(0, vttbr_el2);
}
#ifdef CONFIG_NVHE_EL2_DEBUG
void pkvm_ownership_selftest(void *base);
#else
static inline void pkvm_ownership_selftest(void *base) { }
#endif
#endif /* __KVM_NVHE_MEM_PROTECT__ */