motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-02 07:13:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

i386: kvm: Add support for exposing PROVISIONKEY to guest

Browse source 
If the guest want to fully use SGX, the guest needs to be able to
access provisioning key. Add a new KVM_CAP_SGX_ATTRIBUTE to KVM to
support provisioning key to KVM guests.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20210719112136.57018-14-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2021-07-19 19:21:16 +08:00 • committed by Paolo Bonzini
parent 1dec2e1f19
commit c22f546785
3 changed files with 35 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

5
target/i386/cpu.c
View file

@ -5542,7 +5542,10 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
*ecx |= XSTATE_FP_MASK | XSTATE_SSE_MASK;
/* Access to PROVISIONKEY requires additional credentials. */
*eax &= ~(1U << 4);
if ((*eax & (1U << 4)) &&
!kvm_enable_sgx_provisioning(cs->kvm_state)) {
*eax &= ~(1U << 4);
}
}
#endif
break;