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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2020-12-10 18:09:54 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-12-15 11:20:51 +0100 |
| commit | 7ed9abfe8e9f62384f9b11c9fca19e551dbec5bd (patch) | |
| tree | 389f9ae52777cd6cefda824b5ddb22afe62334a5 /arch/x86/kvm/x86.h | |
| parent | KVM: SVM: Support MMIO for an SEV-ES guest (diff) | |
| download | linux-7ed9abfe8e9f62384f9b11c9fca19e551dbec5bd.tar.xz linux-7ed9abfe8e9f62384f9b11c9fca19e551dbec5bd.zip | |
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/x86.h')
| -rw-r--r-- | arch/x86/kvm/x86.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h index 046709f16abe..fe7f3df91b2c 100644 --- a/arch/x86/kvm/x86.h +++ b/arch/x86/kvm/x86.h @@ -431,5 +431,8 @@ int kvm_sev_es_mmio_write(struct kvm_vcpu *vcpu, gpa_t src, unsigned int bytes, void *dst); int kvm_sev_es_mmio_read(struct kvm_vcpu *vcpu, gpa_t src, unsigned int bytes, void *dst); +int kvm_sev_es_string_io(struct kvm_vcpu *vcpu, unsigned int size, + unsigned int port, void *data, unsigned int count, + int in); #endif |