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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2021-07-19 19:21:17 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-09-30 14:50:20 +0200 |
| commit | b9edbadefb9ecbb1b1754c86ba7d1d7ce3e876aa (patch) | |
| tree | 22397e42f04874a23eab314c23fd0c7d3afdb555 | |
| parent | c22f5467856d7e7fa5ee4a1f0ee9edc3bb80bf5c (diff) | |
| download | qemu-b9edbadefb9ecbb1b1754c86ba7d1d7ce3e876aa.zip qemu-b9edbadefb9ecbb1b1754c86ba7d1d7ce3e876aa.tar.gz qemu-b9edbadefb9ecbb1b1754c86ba7d1d7ce3e876aa.tar.bz2 | |
i386: Propagate SGX CPUID sub-leafs to KVM
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>
| -rw-r--r-- | target/i386/kvm/kvm.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 488926a..f6bbf33 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; |