numa: Add optional sgx_epc_sections field to NumaConfig

This new option allows the user to define a list of SGX EPC sections
attached to a specific NUMA node.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

vmm/src/acpi.rs

@@ -103,12 +103,24 @@ impl MemoryAffinity {
         proximity_domain: u32,
         flags: MemAffinityFlags,
     ) -> Self {
-        let base_addr = region.start_addr().raw_value();
+        Self::from_range(
+            region.start_addr().raw_value(),
+            region.len(),
+            proximity_domain,
+            flags,
+        )
+    }
+
+    fn from_range(
+        base_addr: u64,
+        size: u64,
+        proximity_domain: u32,
+        flags: MemAffinityFlags,
+    ) -> Self {
         let base_addr_lo = (base_addr & 0xffff_ffff) as u32;
         let base_addr_hi = (base_addr >> 32) as u32;
-        let length = region.len() as u64;
-        let length_lo = (length & 0xffff_ffff) as u32;
-        let length_hi = (length >> 32) as u32;
+        let length_lo = (size & 0xffff_ffff) as u32;
+        let length_hi = (size >> 32) as u32;
 
         MemoryAffinity {
             type_: 1,
@@ -254,6 +266,16 @@ fn create_srat_table(numa_nodes: &NumaNodes) -> Sdt {
             ))
         }
 
+        #[cfg(target_arch = "x86_64")]
+        for section in node.sgx_epc_sections() {
+            srat.append(MemoryAffinity::from_range(
+                section.start().raw_value(),
+                section.size(),
+                proximity_domain,
+                MemAffinityFlags::ENABLE,
+            ))
+        }
+
         for cpu in node.cpus() {
             let x2apic_id = *cpu as u32;