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authorXiaoyao Li <xiaoyao.li@intel.com>2025-05-08 10:59:11 -0400
committerPaolo Bonzini <pbonzini@redhat.com>2025-05-28 19:01:40 +0200
commit8eddedc3701d2190db976a05155a8263c8ec175b (patch)
treeb2066c0e550efa10698ac6b9d522a9074dde0ac4 /accel/kvm/kvm-all.c
parent631a2ac5a4beab740b342367550562cd659b4c4a (diff)
downloadfocaccia-qemu-8eddedc3701d2190db976a05155a8263c8ec175b.tar.gz
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i386/tdx: Get tdx_capabilities via KVM_TDX_CAPABILITIES
KVM provides TDX capabilities via sub command KVM_TDX_CAPABILITIES of
IOCTL(KVM_MEMORY_ENCRYPT_OP). Get the capabilities when initializing
TDX context. It will be used to validate user's setting later.

Since there is no interface reporting how many cpuid configs contains in
KVM_TDX_CAPABILITIES, QEMU chooses to try starting with a known number
and abort when it exceeds KVM_MAX_CPUID_ENTRIES.

Besides, introduce the interfaces to invoke TDX "ioctls" at VCPU scope
in preparation.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Link: https://lore.kernel.org/r/20250508150002.689633-6-xiaoyao.li@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'accel/kvm/kvm-all.c')
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