diff options
| author | Tom Lendacky <thomas.lendacky@amd.com> | 2020-12-10 11:09:54 -0600 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-12-15 05:20:51 -0500 |
| commit | 7ed9abfe8e9f62384f9b11c9fca19e551dbec5bd (patch) | |
| tree | 389f9ae52777cd6cefda824b5ddb22afe62334a5 /arch/x86/kvm/svm/svm.h | |
| parent | 8f423a80d299a5b3964b8af005d1aab4e5e9106a (diff) | |
KVM: SVM: Support string IO operations for an SEV-ES guest
For an SEV-ES guest, string-based port IO is performed to a shared
(un-encrypted) page so that both the hypervisor and guest can read or
write to it and each see the contents.
For string-based port IO operations, invoke SEV-ES specific routines that
can complete the operation using common KVM port IO support.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <9d61daf0ffda496703717218f415cdc8fd487100.1607620209.git.thomas.lendacky@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm/svm.h')
| -rw-r--r-- | arch/x86/kvm/svm/svm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h index 9019ad6a8138..b3f03dede6ac 100644 --- a/arch/x86/kvm/svm/svm.h +++ b/arch/x86/kvm/svm/svm.h @@ -573,5 +573,6 @@ void __init sev_hardware_setup(void); void sev_hardware_teardown(void); void sev_free_vcpu(struct kvm_vcpu *vcpu); int sev_handle_vmgexit(struct vcpu_svm *svm); +int sev_es_string_io(struct vcpu_svm *svm, int size, unsigned int port, int in); #endif |