Introduce a new memory region flag, KVM_MEM_UNCACHED, which is needed by ARM. This flag informs KVM that the given memory region is typically mapped by the guest as uncached. KVM for ARM then maps that region as uncached for userspace as well, in order to keep coherency.
Andrew Jones (3): KVM: promote KVM_MEMSLOT_INCOHERENT to uapi arm/arm64: KVM: decouple READONLY and UNCACHED arm/arm64: KVM: implement KVM_MEM_UNCACHED Documentation/virtual/kvm/api.txt | 16 ++++--- arch/arm/include/asm/kvm_mmu.h | 9 ++++ arch/arm/include/uapi/asm/kvm.h | 2 + arch/arm/kvm/arm.c | 1 + arch/arm/kvm/mmu.c | 90 ++++++++++++++++++++++++++++++++++----- arch/arm64/include/asm/kvm_mmu.h | 9 ++++ arch/arm64/include/uapi/asm/kvm.h | 2 + include/linux/kvm_host.h | 1 - include/uapi/linux/kvm.h | 2 + virt/kvm/kvm_main.c | 7 ++- 10 files changed, 121 insertions(+), 18 deletions(-) -- 1.8.3.1
