nEPT: Try to enable EPT paging for L2 guest

Once found EPT is enabled by L1 VMM, enabled nested EPT support
for L2 guest.

Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com>
Acked-by: Tim Deegan <tim@xen.org>
Acked-by: Jun Nakajima <jun.nakajima@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Committed-by: Jan Beulich <jbeulich@suse.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/xen/include/asm-x86/hvm/vmx/vvmx.h b/xen/include/asm-x86/hvm/vmx/vvmx.h
index 33d059a31f..5f92784b9c 100644
--- a/xen/include/asm-x86/hvm/vmx/vvmx.h
+++ b/xen/include/asm-x86/hvm/vmx/vvmx.h
@@ -33,9 +33,10 @@ struct nestedvmx {
         u32           error_code;
     } intr;
     struct {
+        bool_t   enabled;
         uint32_t exit_reason;
         uint32_t exit_qual;
-    } ept_exit;
+    } ept;
 };
 
 #define vcpu_2_nvmx(v)	(vcpu_nestedhvm(v).u.nvmx)
@@ -110,6 +111,8 @@ int nvmx_intercepts_exception(struct vcpu *v,
                               unsigned int trap, int error_code);
 void nvmx_domain_relinquish_resources(struct domain *d);
 
+bool_t nvmx_ept_enabled(struct vcpu *v);
+
 int nvmx_handle_vmxon(struct cpu_user_regs *regs);
 int nvmx_handle_vmxoff(struct cpu_user_regs *regs);
 
@@ -178,6 +181,8 @@ enum vvmcs_encoding_type {
 u64 __get_vvmcs(void *vvmcs, u32 vmcs_encoding);
 void __set_vvmcs(void *vvmcs, u32 vmcs_encoding, u64 val);
 
+uint64_t get_shadow_eptp(struct vcpu *v);
+
 void nvmx_destroy_vmcs(struct vcpu *v);
 int nvmx_handle_vmptrld(struct cpu_user_regs *regs);
 int nvmx_handle_vmptrst(struct cpu_user_regs *regs);