@@ -1026,7 +1026,7 @@ void kvm_mmu_setup(struct kvm_vcpu *vcpu);
void kvm_mmu_init_vm(struct kvm *kvm);
void kvm_mmu_uninit_vm(struct kvm *kvm);
void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
- u64 dirty_mask, u64 nx_mask, u64 x_mask);
+ u64 dirty_mask, u64 nx_mask, u64 x_mask, bool xonly);
void kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
void kvm_mmu_slot_remove_write_access(struct kvm *kvm,
@@ -175,6 +175,8 @@ static u64 __read_mostly shadow_user_mask;
static u64 __read_mostly shadow_accessed_mask;
static u64 __read_mostly shadow_dirty_mask;
static u64 __read_mostly shadow_mmio_mask;
+/* true if processor supports execute only ept mappings */
+static bool __read_mostly shadow_xonly_valid;
static void mmu_spte_set(u64 *sptep, u64 spte);
static void mmu_free_roots(struct kvm_vcpu *vcpu);
@@ -282,13 +284,15 @@ static bool check_mmio_spte(struct kvm_vcpu *vcpu, u64 spte)
}
void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
- u64 dirty_mask, u64 nx_mask, u64 x_mask)
+ u64 dirty_mask, u64 nx_mask, u64 x_mask,
+ bool xonly_valid)
{
shadow_user_mask = user_mask;
shadow_accessed_mask = accessed_mask;
shadow_dirty_mask = dirty_mask;
shadow_nx_mask = nx_mask;
shadow_x_mask = x_mask;
+ shadow_xonly_valid = xonly_valid;
}
EXPORT_SYMBOL_GPL(kvm_mmu_set_mask_ptes);
@@ -6369,7 +6369,8 @@ static __init int hardware_setup(void)
kvm_mmu_set_mask_ptes(0ull,
(enable_ept_ad_bits) ? VMX_EPT_ACCESS_BIT : 0ull,
(enable_ept_ad_bits) ? VMX_EPT_DIRTY_BIT : 0ull,
- 0ull, VMX_EPT_EXECUTABLE_MASK);
+ 0ull, VMX_EPT_EXECUTABLE_MASK,
+ cpu_has_vmx_ept_execute_only() ? true : false);
ept_set_mmio_spte_mask();
kvm_enable_tdp();
} else
@@ -5873,7 +5873,7 @@ int kvm_arch_init(void *opaque)
kvm_x86_ops = ops;
kvm_mmu_set_mask_ptes(PT_USER_MASK, PT_ACCESSED_MASK,
- PT_DIRTY_MASK, PT64_NX_MASK, 0);
+ PT_DIRTY_MASK, PT64_NX_MASK, 0, false);
kvm_timer_init();
This is passed as the last argument with the call to kvm_mmu_set_mask_ptes. This is an easier alternative to FNAMing is_shadow_pte_present(). Signed-off-by: Bandan Das <bsd@redhat.com> --- arch/x86/include/asm/kvm_host.h | 2 +- arch/x86/kvm/mmu.c | 6 +++++- arch/x86/kvm/vmx.c | 3 ++- arch/x86/kvm/x86.c | 2 +- 4 files changed, 9 insertions(+), 4 deletions(-)