diff mbox series

[19/32] i386/pc: Add e820 entry for SGX EPC section(s)

Message ID 20210419100156.53504-20-yang.zhong@intel.com (mailing list archive)
State New, archived
Headers show
Series Qemu SGX virtualization | expand

Commit Message

Yang Zhong April 19, 2021, 10:01 a.m. UTC 
From: Sean Christopherson <sean.j.christopherson@intel.com>

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@intel.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
---
 hw/i386/pc.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index ca8ec072bc..d556eaca25 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -895,6 +895,10 @@  void pc_memory_init(PCMachineState *pcms,
         e820_add_entry(0x100000000ULL, x86ms->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 ||
          (machine->maxram_size > machine->ram_size))) {