cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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kvm_mm.h (1494B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2
      3#ifndef __KVM_MM_H__
      4#define __KVM_MM_H__ 1
      5
      6/*
      7 * Architectures can choose whether to use an rwlock or spinlock
      8 * for the mmu_lock.  These macros, for use in common code
      9 * only, avoids using #ifdefs in places that must deal with
     10 * multiple architectures.
     11 */
     12
     13#ifdef KVM_HAVE_MMU_RWLOCK
     14#define KVM_MMU_LOCK_INIT(kvm)		rwlock_init(&(kvm)->mmu_lock)
     15#define KVM_MMU_LOCK(kvm)		write_lock(&(kvm)->mmu_lock)
     16#define KVM_MMU_UNLOCK(kvm)		write_unlock(&(kvm)->mmu_lock)
     17#define KVM_MMU_READ_LOCK(kvm)		read_lock(&(kvm)->mmu_lock)
     18#define KVM_MMU_READ_UNLOCK(kvm)	read_unlock(&(kvm)->mmu_lock)
     19#else
     20#define KVM_MMU_LOCK_INIT(kvm)		spin_lock_init(&(kvm)->mmu_lock)
     21#define KVM_MMU_LOCK(kvm)		spin_lock(&(kvm)->mmu_lock)
     22#define KVM_MMU_UNLOCK(kvm)		spin_unlock(&(kvm)->mmu_lock)
     23#define KVM_MMU_READ_LOCK(kvm)		spin_lock(&(kvm)->mmu_lock)
     24#define KVM_MMU_READ_UNLOCK(kvm)	spin_unlock(&(kvm)->mmu_lock)
     25#endif /* KVM_HAVE_MMU_RWLOCK */
     26
     27kvm_pfn_t hva_to_pfn(unsigned long addr, bool atomic, bool *async,
     28		     bool write_fault, bool *writable);
     29
     30#ifdef CONFIG_HAVE_KVM_PFNCACHE
     31void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm,
     32				       unsigned long start,
     33				       unsigned long end,
     34				       bool may_block);
     35#else
     36static inline void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm,
     37						     unsigned long start,
     38						     unsigned long end,
     39						     bool may_block)
     40{
     41}
     42#endif /* HAVE_KVM_PFNCACHE */
     43
     44#endif /* __KVM_MM_H__ */