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[PATCH 15/32] i386: Propagate SGX CPUID sub-leafs to KVM
From: |
Yang Zhong |
Subject: |
[PATCH 15/32] i386: Propagate SGX CPUID sub-leafs to KVM |
Date: |
Mon, 19 Apr 2021 18:01:39 +0800 |
From: Sean Christopherson <sean.j.christopherson@intel.com>
The SGX sub-leafs are enumerated at CPUID 0x12. Indices 0 and 1 are
always present when SGX is supported, and enumerate SGX features and
capabilities. Indices >=2 are directly correlated with the platform's
EPC sections. Because the number of EPC sections is dynamic and user
defined, the number of SGX sub-leafs is "NULL" terminated.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
---
target/i386/kvm/kvm.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index 648cccd7c2..67770b01cb 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -1615,6 +1615,25 @@ int kvm_arch_init_vcpu(CPUState *cs)
}
break;
case 0x7:
+ case 0x12:
+ for (j = 0; ; j++) {
+ c->function = i;
+ c->flags = KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
+ c->index = j;
+ cpu_x86_cpuid(env, i, j, &c->eax, &c->ebx, &c->ecx, &c->edx);
+
+ if (j > 1 && (c->eax & 0xf) != 1) {
+ break;
+ }
+
+ if (cpuid_i == KVM_MAX_CPUID_ENTRIES) {
+ fprintf(stderr, "cpuid_data is full, no space for "
+ "cpuid(eax:0x12,ecx:0x%x)\n", j);
+ abort();
+ }
+ c = &cpuid_data.entries[cpuid_i++];
+ }
+ break;
case 0x14: {
uint32_t times;
--
2.29.2.334.gfaefdd61ec
- [PATCH 06/32] i386: Add primary SGX CPUID and MSR defines, (continued)
- [PATCH 06/32] i386: Add primary SGX CPUID and MSR defines, Yang Zhong, 2021/04/19
- [PATCH 05/32] vl: Add "sgx-epc" option to expose SGX EPC sections to guest, Yang Zhong, 2021/04/19
- [PATCH 09/32] i386: Add SGX CPUID leaf FEAT_SGX_12_1_EAX, Yang Zhong, 2021/04/19
- [PATCH 10/32] i386: Add get/set/migrate support for SGX_LEPUBKEYHASH MSRs, Yang Zhong, 2021/04/19
- [PATCH 07/32] i386: Add SGX CPUID leaf FEAT_SGX_12_0_EAX, Yang Zhong, 2021/04/19
- [PATCH 12/32] i386: Update SGX CPUID info according to hardware/KVM/user input, Yang Zhong, 2021/04/19
- [PATCH 11/32] i386: Add feature control MSR dependency when SGX is enabled, Yang Zhong, 2021/04/19
- [PATCH 13/32] linux-headers: Add placeholder for KVM_CAP_SGX_ATTRIBUTE, Yang Zhong, 2021/04/19
- [PATCH 15/32] i386: Propagate SGX CPUID sub-leafs to KVM,
Yang Zhong <=
- [PATCH 14/32] i386: kvm: Add support for exposing PROVISIONKEY to guest, Yang Zhong, 2021/04/19
- [PATCH 16/32] Adjust min CPUID level to 0x12 when SGX is enabled, Yang Zhong, 2021/04/19
- [PATCH 17/32] hw/i386/fw_cfg: Set SGX bits in feature control fw_cfg accordingly, Yang Zhong, 2021/04/19
- [PATCH 18/32] hw/i386/pc: Account for SGX EPC sections when calculating device memory, Yang Zhong, 2021/04/19
- [PATCH 19/32] i386/pc: Add e820 entry for SGX EPC section(s), Yang Zhong, 2021/04/19
- [PATCH 20/32] i386: acpi: Add SGX EPC entry to ACPI tables, Yang Zhong, 2021/04/19
- [PATCH 21/32] q35: Add support for SGX EPC, Yang Zhong, 2021/04/19
- [PATCH 22/32] i440fx: Add support for SGX EPC, Yang Zhong, 2021/04/19
- [PATCH 23/32] hostmem: Add the reset interface for EPC backend reset, Yang Zhong, 2021/04/19
- [PATCH 24/32] sgx-epc: Add the reset interface for sgx-epc virt device, Yang Zhong, 2021/04/19