From: Paolo Bonzini <pbonzini@redhat.com>
Date: Tue, 16 Jul 2024 13:54:57 +0000 (-0400)
Subject: Merge tag 'kvm-x86-mtrrs-6.11' of https://github.com/kvm-x86/linux into HEAD
X-Git-Url: https://repo.jachan.dev/J-linux.git/commitdiff_plain/5c5ddf71071f01fabe9380e16c36c9263d40d528

Merge tag 'kvm-x86-mtrrs-6.11' of https://github.com/kvm-x86/linux into HEAD

KVM x86 MTRR virtualization removal

Remove support for virtualizing MTRRs on Intel CPUs, along with a nasty CR0.CD
hack, and instead always honor guest PAT on CPUs that support self-snoop.
---

5c5ddf71071f01fabe9380e16c36c9263d40d528
diff --cc arch/x86/kvm/mmu.h
index f2e7e5c9b9ef,eb2de8eb6e46..24ea7183d7b4
--- a/arch/x86/kvm/mmu.h
+++ b/arch/x86/kvm/mmu.h
@@@ -221,13 -246,10 +221,8 @@@ static inline u8 permission_fault(struc
  	return -(u32)fault & errcode;
  }
  
- bool __kvm_mmu_honors_guest_mtrrs(bool vm_has_noncoherent_dma);
- 
- static inline bool kvm_mmu_honors_guest_mtrrs(struct kvm *kvm)
- {
- 	return __kvm_mmu_honors_guest_mtrrs(kvm_arch_has_noncoherent_dma(kvm));
- }
+ bool kvm_mmu_may_ignore_guest_pat(void);
  
 -void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end);
 -
  int kvm_arch_write_log_dirty(struct kvm_vcpu *vcpu);
  
  int kvm_mmu_post_init_vm(struct kvm *kvm);