| From e8377e3f4d540e2594a50985523e87d1f3cabbc7 Mon Sep 17 00:00:00 2001 |
| From: Yang Zhong <yang.zhong@intel.com> |
| Date: Mon, 1 Nov 2021 12:20:08 -0400 |
| Subject: [PATCH 3/7] doc: Add the SGX numa description |
| |
| RH-Author: Paul Lai <None> |
| RH-MergeRequest: 111: numa: Enable numa for SGX EPC sections |
| RH-Commit: [3/5] 41c74688c9662b966c243566a837135ff52341c4 |
| RH-Bugzilla: 1518984 |
| RH-Acked-by: Paolo Bonzini <None> |
| RH-Acked-by: Bandan Das <None> |
| RH-Acked-by: Cornelia Huck <cohuck@redhat.com> |
| |
| Add the SGX numa reference command and how to check if |
| SGX numa is support or not with multiple EPC sections. |
| |
| Signed-off-by: Yang Zhong <yang.zhong@intel.com> |
| Message-Id: <20211101162009.62161-5-yang.zhong@intel.com> |
| Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
| (cherry picked from commit d1889b36098c79e2e6ac90faf3d0dc5ec0057677) |
| Signed-off-by: Paul Lai <plai@redhat.com> |
| |
| docs/system/i386/sgx.rst | 31 +++++++++++++++++++++++++++---- |
| 1 file changed, 27 insertions(+), 4 deletions(-) |
| |
| diff --git a/docs/system/i386/sgx.rst b/docs/system/i386/sgx.rst |
| index f8fade5ac2..0f0a73f758 100644 |
| |
| |
| @@ -141,8 +141,7 @@ To launch a SGX guest: |
| |qemu_system_x86| \\ |
| -cpu host,+sgx-provisionkey \\ |
| -object memory-backend-epc,id=mem1,size=64M,prealloc=on \\ |
| - -object memory-backend-epc,id=mem2,size=28M \\ |
| - -M sgx-epc.0.memdev=mem1,sgx-epc.1.memdev=mem2 |
| + -M sgx-epc.0.memdev=mem1,sgx-epc.0.node=0 |
| |
| Utilizing SGX in the guest requires a kernel/OS with SGX support. |
| The support can be determined in guest by:: |
| @@ -152,8 +151,32 @@ The support can be determined in guest by:: |
| and SGX epc info by:: |
| |
| $ dmesg | grep sgx |
| - [ 1.242142] sgx: EPC section 0x180000000-0x181bfffff |
| - [ 1.242319] sgx: EPC section 0x181c00000-0x1837fffff |
| + [ 0.182807] sgx: EPC section 0x140000000-0x143ffffff |
| + [ 0.183695] sgx: [Firmware Bug]: Unable to map EPC section to online node. Fallback to the NUMA node 0. |
| + |
| +To launch a SGX numa guest: |
| + |
| +.. parsed-literal:: |
| + |
| + |qemu_system_x86| \\ |
| + -cpu host,+sgx-provisionkey \\ |
| + -object memory-backend-ram,size=2G,host-nodes=0,policy=bind,id=node0 \\ |
| + -object memory-backend-epc,id=mem0,size=64M,prealloc=on,host-nodes=0,policy=bind \\ |
| + -numa node,nodeid=0,cpus=0-1,memdev=node0 \\ |
| + -object memory-backend-ram,size=2G,host-nodes=1,policy=bind,id=node1 \\ |
| + -object memory-backend-epc,id=mem1,size=28M,prealloc=on,host-nodes=1,policy=bind \\ |
| + -numa node,nodeid=1,cpus=2-3,memdev=node1 \\ |
| + -M sgx-epc.0.memdev=mem0,sgx-epc.0.node=0,sgx-epc.1.memdev=mem1,sgx-epc.1.node=1 |
| + |
| +and SGX epc numa info by:: |
| + |
| + $ dmesg | grep sgx |
| + [ 0.369937] sgx: EPC section 0x180000000-0x183ffffff |
| + [ 0.370259] sgx: EPC section 0x184000000-0x185bfffff |
| + |
| + $ dmesg | grep SRAT |
| + [ 0.009981] ACPI: SRAT: Node 0 PXM 0 [mem 0x180000000-0x183ffffff] |
| + [ 0.009982] ACPI: SRAT: Node 1 PXM 1 [mem 0x184000000-0x185bfffff] |
| |
| References |
| ---------- |
| -- |
| 2.27.0 |
| |