KVM: x86: Rename gb_page_enable() to get_lpage_level() in kvm_x86_ops

Then the callback can provide the maximum supported large page level, which
is more flexible.

Also move the gb page support into x86_64 specific.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index aff3479867a8..c990424d86d0 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1641,10 +1641,12 @@ static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
                          u32 index, int *nent, int maxnent)
 {
         unsigned f_nx = is_efer_nx() ? F(NX) : 0;
-        unsigned f_gbpages = kvm_x86_ops->gb_page_enable() ? F(GBPAGES) : 0;
 #ifdef CONFIG_X86_64
+        unsigned f_gbpages = (kvm_x86_ops->get_lpage_level() == PT_PDPE_LEVEL)
+                                ? F(GBPAGES) : 0;
         unsigned f_lm = F(LM);
 #else
+        unsigned f_gbpages = 0;
         unsigned f_lm = 0;
 #endif
         unsigned f_rdtscp = kvm_x86_ops->rdtscp_supported() ? F(RDTSCP) : 0;