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[PULL v4 23/43] i386: Propagate SGX CPUID sub-leafs to KVM
From: |
Paolo Bonzini |
Subject: |
[PULL v4 23/43] i386: Propagate SGX CPUID sub-leafs to KVM |
Date: |
Wed, 8 Sep 2021 12:04:06 +0200 |
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>
Message-Id: <20210719112136.57018-15-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.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 488926a95f..f6bbf33bc1 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -1703,6 +1703,25 @@ 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;
--
2.31.1
- Re: [PULL v4 21/43] i386: Update SGX CPUID info according to hardware/KVM/user input, (continued)
- [PULL v4 22/43] i386: kvm: Add support for exposing PROVISIONKEY to guest, Paolo Bonzini, 2021/09/08
- [PULL v4 19/43] fw_cfg: add etc/msr_feature_control, Paolo Bonzini, 2021/09/08
- [PULL v4 27/43] i386/pc: Add e820 entry for SGX EPC section(s), Paolo Bonzini, 2021/09/08
- [PULL v4 32/43] sgx-epc: Add the reset interface for sgx-epc virt device, Paolo Bonzini, 2021/09/08
- [PULL v4 15/43] i386: Add SGX CPUID leaf FEAT_SGX_12_0_EAX, Paolo Bonzini, 2021/09/08
- [PULL v4 36/43] sgx-epc: Add the fill_device_info() callback support, Paolo Bonzini, 2021/09/08
- [PULL v4 40/43] docs/system: move x86 CPU configuration to a separate document, Paolo Bonzini, 2021/09/08
- [PULL v4 39/43] docs/system: standardize man page sections to --- with overline, Paolo Bonzini, 2021/09/08
- [PULL v4 23/43] i386: Propagate SGX CPUID sub-leafs to KVM,
Paolo Bonzini <=
- [PULL v4 25/43] hw/i386/fw_cfg: Set SGX bits in feature control fw_cfg accordingly, Paolo Bonzini, 2021/09/08
- [PULL v4 28/43] i386: acpi: Add SGX EPC entry to ACPI tables, Paolo Bonzini, 2021/09/08
- [PULL v4 26/43] hw/i386/pc: Account for SGX EPC sections when calculating device memory, Paolo Bonzini, 2021/09/08
- [PULL v4 29/43] q35: Add support for SGX EPC, Paolo Bonzini, 2021/09/08
- [PULL v4 31/43] hostmem-epc: Add the reset interface for EPC backend reset, Paolo Bonzini, 2021/09/08
- [PULL v4 33/43] sgx-epc: Avoid bios reset during sgx epc initialization, Paolo Bonzini, 2021/09/08
- [PULL v4 37/43] docs: standardize book titles to === with overline, Paolo Bonzini, 2021/09/08
- [PULL v4 34/43] hostmem-epc: Make prealloc consistent with qemu cmdline during reset, Paolo Bonzini, 2021/09/08
- [PULL v4 35/43] Kconfig: Add CONFIG_SGX support, Paolo Bonzini, 2021/09/08