From: Marc Zyngier Date: Wed, 25 Jan 2017 13:47:43 +0000 (+0000) Subject: arm/arm64: KVM: Get rid of KVM_MEMSLOT_INCOHERENT X-Git-Tag: v4.11-rc1~109^2~37^2~12 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9d93dc1c96ec446bef9c34a189ea24556f1af89a;p=platform%2Fkernel%2Flinux-exynos.git arm/arm64: KVM: Get rid of KVM_MEMSLOT_INCOHERENT 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 Signed-off-by: Marc Zyngier --- diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index 5cc35080..962616f 100644 --- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -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, 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; } diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 1c5190d..cda457b 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -45,7 +45,6 @@ * include/linux/kvm_h. */ #define KVM_MEMSLOT_INVALID (1UL << 16) -#define KVM_MEMSLOT_INCOHERENT (1UL << 17) /* Two fragments for cross MMIO pages. */ #define KVM_MAX_MMIO_FRAGMENTS 2