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arm/arm64: KVM: Get rid of KVM_MEMSLOT_INCOHERENT

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KVM_MEMSLOT_INCOHERENT is not used anymore, as we've killed its
only use in the arm/arm64 MMU code. Let's remove the last artifacts.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier
2017-01-25 13:47:43 +00:00
parent 13b7756cec
commit 9d93dc1c96
2 changed files with 0 additions and 10 deletions
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9
arch/arm/kvm/mmu.c
View File

@@ -1876,15 +1876,6 @@ void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
unsigned long npages) unsigned long npages)
{ {
/*
* Readonly memslots are not incoherent with the caches by definition,
* but in practice, they are used mostly to emulate ROMs or NOR flashes
* that the guest may consider devices and hence map as uncached.
* To prevent incoherency issues in these cases, tag all readonly
* regions as incoherent.
*/
if (slot->flags & KVM_MEM_READONLY)
slot->flags |= KVM_MEMSLOT_INCOHERENT;
return 0; return 0;
} }

1
include/linux/kvm_host.h
View File

@@ -45,7 +45,6 @@
* include/linux/kvm_h. * include/linux/kvm_h.
*/ */
#define KVM_MEMSLOT_INVALID (1UL << 16) #define KVM_MEMSLOT_INVALID (1UL << 16)
#define KVM_MEMSLOT_INCOHERENT (1UL << 17)
/* Two fragments for cross MMIO pages. */ /* Two fragments for cross MMIO pages. */
#define KVM_MAX_MMIO_FRAGMENTS 2 #define KVM_MAX_MMIO_FRAGMENTS 2