Re: [PATCH 13/18] KVM: x86/mmu: Avoid warning when installing non-private memory attributes

In preparation to introducing RWX memory attributes, make sure
user-space is attempting to install a memory attribute with
KVM_MEMORY_ATTRIBUTE_PRIVATE before throwing a warning on systems with
no private memory support.

Signed-off-by: Nicolas Saenz Julienne <redacted>
---
 arch/x86/kvm/mmu/mmu.c | 8 ++++++--
 virt/kvm/kvm_main.c    | 1 +
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index b0c210b96419f..d56c04fbdc66b 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c

@@ -7359,6 +7359,9 @@ void kvm_mmu_pre_destroy_vm(struct kvm *kvm)
 bool kvm_arch_pre_set_memory_attributes(struct kvm *kvm,
 					struct kvm_gfn_range *range)
 {
+	unsigned long attrs = range->arg.attributes;
+	bool priv_attr = attrs & KVM_MEMORY_ATTRIBUTE_PRIVATE;