v7: 3/3: Fix check for AD Use kvm_vcpu_read_guest_page() v6: https://lkml.org/lkml/2017/8/1/1015 3/3: Fix check for memory type in address Change check function name as requested in the review Move setting of mmu->ept_ad to after calling mmu_unload and also reset base_role.ad_disabled appropriately Replace IS_ALIGN with page_address_valid() v5: https://lkml.org/lkml/2017/7/28/621 1/3 and 2/3 are unchanged but some changes in 3/3. I left the mmu_load failure path untouched because I am not sure what's the right thing to do here. 3/3: Move the eptp switching logic to a different function Add check for EPTP_ADDRESS in check_vmentry_prereq Add check for validity of ept pointer Check if AD bit is set and set ept_ad Add TODO item about mmu_unload failure v4: https://lkml.org/lkml/2017/7/10/705 2/3: Use WARN_ONCE to avoid logging dos v3: https://lkml.org/lkml/2017/7/10/684 3/3: Add missing nested_release_page_clean() and check the eptp as mentioned in SDM 24.6.14 v2: https://lkml.org/lkml/2017/7/6/813 1/3: Patch to enable vmfunc on the host but cause a #UD if L1 tries to use it directly. (new) 2/3: Expose vmfunc to the nested hypervisor, but no vm functions are exposed and L0 emulates a vmfunc vmexit to L1. 3/3: Force a vmfunc vmexit when L2 tries to use vmfunc and emulate eptp switching. Unconditionally expose EPTP switching to the L1 hypervisor since L0 fakes eptp switching via a mmu reload. These patches expose eptp switching/vmfunc to the nested hypervisor. vmfunc is enabled in the secondary controls for the host and is exposed to the nested hypervisor. However, if the nested hypervisor decides to use eptp switching, L0 emulates it. v1: https://lkml.org/lkml/2017/6/29/958 Bandan Das (3): KVM: vmx: Enable VMFUNCs KVM: nVMX: Enable VMFUNC for the L1 hypervisor KVM: nVMX: Emulate EPTP switching for the L1 hypervisor arch/x86/include/asm/vmx.h | 9 +++ arch/x86/kvm/vmx.c | 185 ++++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 192 insertions(+), 2 deletions(-) -- 2.9.4
