KVM: Add kvm_x86_ops get_tdp_level()

The function get_tdp_level() provided the number of tdp level for EPT and
NPT rather than the NPT specific macro.

Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index bcfaf7e..20fb3c8 100644 (file)
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1343,7 +1343,7 @@ static int tdp_page_fault(struct kvm_vcpu *vcpu, gva_t gpa,
        spin_lock(&vcpu->kvm->mmu_lock);
        kvm_mmu_free_some_pages(vcpu);
        r = __direct_map(vcpu, gpa, error_code & PFERR_WRITE_MASK,
-                        largepage, gfn, pfn, TDP_ROOT_LEVEL);
+                        largepage, gfn, pfn, kvm_x86_ops->get_tdp_level());
        spin_unlock(&vcpu->kvm->mmu_lock);
 
        return r;
@@ -1450,7 +1450,7 @@ static int init_kvm_tdp_mmu(struct kvm_vcpu *vcpu)
        context->page_fault = tdp_page_fault;
        context->free = nonpaging_free;
        context->prefetch_page = nonpaging_prefetch_page;
-       context->shadow_root_level = TDP_ROOT_LEVEL;
+       context->shadow_root_level = kvm_x86_ops->get_tdp_level();
        context->root_hpa = INVALID_PAGE;
 
        if (!is_paging(vcpu)) {

diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h
index a4fcb78..1730757 100644 (file)
--- a/arch/x86/kvm/mmu.h
+++ b/arch/x86/kvm/mmu.h
@@ -3,12 +3,6 @@
 
 #include <linux/kvm_host.h>
 
-#ifdef CONFIG_X86_64
-#define TDP_ROOT_LEVEL PT64_ROOT_LEVEL
-#else
-#define TDP_ROOT_LEVEL PT32E_ROOT_LEVEL
-#endif
-
 #define PT64_PT_BITS 9
 #define PT64_ENT_PER_PAGE (1 << PT64_PT_BITS)
 #define PT32_PT_BITS 10

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 89e0be2..ab22615 100644 (file)
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1863,6 +1863,15 @@ static bool svm_cpu_has_accelerated_tpr(void)
        return false;
 }
 
+static int get_npt_level(void)
+{
+#ifdef CONFIG_X86_64
+       return PT64_ROOT_LEVEL;
+#else
+       return PT32E_ROOT_LEVEL;
+#endif
+}
+
 static struct kvm_x86_ops svm_x86_ops = {
        .cpu_has_kvm_support = has_svm,
        .disabled_by_bios = is_disabled,
@@ -1920,6 +1929,7 @@ static struct kvm_x86_ops svm_x86_ops = {
        .inject_pending_vectors = do_interrupt_requests,
 
        .set_tss_addr = svm_set_tss_addr,
+       .get_tdp_level = get_npt_level,
 };
 
 static int __init svm_init(void)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index d93250d..98e4f2b 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2788,6 +2788,11 @@ static void __init vmx_check_processor_compat(void *rtn)
        }
 }
 
+static int get_ept_level(void)
+{
+       return VMX_EPT_DEFAULT_GAW + 1;
+}
+
 static struct kvm_x86_ops vmx_x86_ops = {
        .cpu_has_kvm_support = cpu_has_kvm_support,
        .disabled_by_bios = vmx_disabled_by_bios,
@@ -2844,6 +2849,7 @@ static struct kvm_x86_ops vmx_x86_ops = {
        .inject_pending_vectors = do_interrupt_requests,
 
        .set_tss_addr = vmx_set_tss_addr,
+       .get_tdp_level = get_ept_level,
 };
 
 static int __init vmx_init(void)

diff --git a/arch/x86/kvm/vmx.h b/arch/x86/kvm/vmx.h
index 5f7fdc9..093b085 100644 (file)
--- a/arch/x86/kvm/vmx.h
+++ b/arch/x86/kvm/vmx.h
@@ -351,5 +351,6 @@ enum vmcs_field {
 #define VMX_EPT_EXTENT_INDIVIDUAL_BIT          (1ull << 24)
 #define VMX_EPT_EXTENT_CONTEXT_BIT             (1ull << 25)
 #define VMX_EPT_EXTENT_GLOBAL_BIT              (1ull << 26)
+#define VMX_EPT_DEFAULT_GAW                    3
 
 #endif

diff --git a/include/asm-x86/kvm_host.h b/include/asm-x86/kvm_host.h
index 9d963cd..897a1be 100644 (file)
--- a/include/asm-x86/kvm_host.h
+++ b/include/asm-x86/kvm_host.h
@@ -422,6 +422,7 @@ struct kvm_x86_ops {
                                       struct kvm_run *run);
 
        int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
+       int (*get_tdp_level)(void);
 };
 
 extern struct kvm_x86_ops *kvm_x86_ops;