[RFC PATCH 17/20] i386/pc: Add e820 entry for SGX EPC section(s)

[Sean Christopherson <sean.j.christopherson@xxxxxxxxx>]

Note that SGX EPC is currently guaranteed to reside in a single
contiguous chunk of memory regardless of the number of EPC sections.

Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
---
 hw/i386/pc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 614d464394..1b555e46f3 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1850,6 +1850,9 @@ void pc_memory_init(PCMachineState *pcms,
                                     ram_above_4g);
         e820_add_entry(0x100000000ULL, pcms->above_4g_mem_size, E820_RAM);
     }
+    if (pcms->sgx_epc != NULL) {
+        e820_add_entry(pcms->sgx_epc->base, pcms->sgx_epc->size, E820_RESERVED);
+    }
 
     if (!pcmc->has_reserved_memory &&
         (machine->ram_slots ||
-- 
2.22.0