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hyperv: Add support to process syndbg commands

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SynDbg commands can come from two different flows:
1. Hypercalls, in this mode the data being sent is fully
   encapsulated network packets.
2. SynDbg specific MSRs, in this mode only the data that needs to be
   transfered is passed.

Signed-off-by: Jon Doron <arilou@gmail.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20220216102500.692781-4-arilou@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jon Doron 2022-02-16 12:24:59 +02:00 • committed by Paolo Bonzini
parent ccbdf5e81b
commit 73d2407407
8 changed files with 451 additions and 8 deletions
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6
target/i386/kvm/hyperv-stub.c
View file

@ -27,6 +27,12 @@ int kvm_hv_handle_exit(X86CPU *cpu, struct kvm_hyperv_exit *exit)
return 0;
case KVM_EXIT_HYPERV_HCALL:
exit->u.hcall.result = HV_STATUS_INVALID_HYPERCALL_CODE;
return 0;
case KVM_EXIT_HYPERV_SYNDBG:
if (!hyperv_feat_enabled(cpu, HYPERV_FEAT_SYNDBG)) {
return -1;
}
return 0;
default:
return -1;