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| author | Brijesh Singh <brijesh.singh@amd.com> | 2018-03-08 06:48:46 -0600 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-03-13 12:04:03 +0100 |
| commit | 54e89539670e904b0d4f0993abeb92f641c60436 (patch) | |
| tree | a698d1deef86da325b1023a77dc3cfd2ac8d4a48 /accel | |
| parent | b20e37801fc4a94ba40737541710c29c923e1c48 (diff) | |
| download | qemu-54e89539670e904b0d4f0993abeb92f641c60436.zip qemu-54e89539670e904b0d4f0993abeb92f641c60436.tar.gz qemu-54e89539670e904b0d4f0993abeb92f641c60436.tar.bz2 | |
kvm: introduce memory encryption APIs
Inorder to integerate the Secure Encryption Virtualization (SEV) support
add few high-level memory encryption APIs which can be used for encrypting
the guest memory region.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'accel')
| -rw-r--r-- | accel/kvm/kvm-all.c | 14 | ||||
| -rw-r--r-- | accel/kvm/sev-stub.c | 5 | ||||
| -rw-r--r-- | accel/stubs/kvm-stub.c | 5 |
3 files changed, 24 insertions, 0 deletions
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index e0e43fd..ffee68e 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -107,6 +107,7 @@ struct KVMState /* memory encryption */ void *memcrypt_handle; + int (*memcrypt_encrypt_data)(void *handle, uint8_t *ptr, uint64_t len); }; KVMState *kvm_state; @@ -151,6 +152,17 @@ bool kvm_memcrypt_enabled(void) return false; } +int kvm_memcrypt_encrypt_data(uint8_t *ptr, uint64_t len) +{ + if (kvm_state->memcrypt_handle && + kvm_state->memcrypt_encrypt_data) { + return kvm_state->memcrypt_encrypt_data(kvm_state->memcrypt_handle, + ptr, len); + } + + return 1; +} + static KVMSlot *kvm_get_free_slot(KVMMemoryListener *kml) { KVMState *s = kvm_state; @@ -1659,6 +1671,8 @@ static int kvm_init(MachineState *ms) ret = -1; goto err; } + + kvm_state->memcrypt_encrypt_data = sev_encrypt_data; } ret = kvm_arch_init(ms, s); diff --git a/accel/kvm/sev-stub.c b/accel/kvm/sev-stub.c index 4a5cc55..4f97452 100644 --- a/accel/kvm/sev-stub.c +++ b/accel/kvm/sev-stub.c @@ -15,6 +15,11 @@ #include "qemu-common.h" #include "sysemu/sev.h" +int sev_encrypt_data(void *handle, uint8_t *ptr, uint64_t len) +{ + abort(); +} + void *sev_guest_init(const char *id) { return NULL; diff --git a/accel/stubs/kvm-stub.c b/accel/stubs/kvm-stub.c index f83192d..02d5170 100644 --- a/accel/stubs/kvm-stub.c +++ b/accel/stubs/kvm-stub.c @@ -110,6 +110,11 @@ bool kvm_memcrypt_enabled(void) return false; } +int kvm_memcrypt_encrypt_data(uint8_t *ptr, uint64_t len) +{ + return 1; +} + #ifndef CONFIG_USER_ONLY int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev) { |