KVM: TDX: Implement TDX vcpu enter/exit path

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Implement callbacks to enter/exit a TDX VCPU by calling tdh_vp_enter().
Ensure the TDX VCPU is in a correct state to run.

Do not pass arguments from/to vcpu->arch.regs[] unconditionally. Instead,
marshall state to/from the appropriate x86 registers only when needed,
i.e., to handle some TDVMCALL sub-leaves following KVM's ABI to leverage
the existing code.

Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Message-ID: <20250129095902.16391-6-adrian.hunter@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Isaku Yamahata 2025-01-29 11:58:54 +02:00 • committed by Paolo Bonzini

parent 7172c753c2

commit 81bf912b2c

4 changed files with 90 additions and 2 deletions

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20

arch/x86/kvm/vmx/main.c

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62

arch/x86/kvm/vmx/tdx.c

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3

arch/x86/kvm/vmx/tdx.h

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7

arch/x86/kvm/vmx/x86_ops.h

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