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kvm: add memory encryption context

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Split from a patch by Brijesh Singh (brijesh.singh@amd.com).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
This commit is contained in:
Brijesh Singh 2018-03-08 06:48:44 -06:00 • committed by Paolo Bonzini
parent 9b02f7bf85
commit b20e37801f
7 changed files with 83 additions and 2 deletions
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25
accel/kvm/kvm-all.c
View file

@ -38,6 +38,7 @@
#include "qemu/event_notifier.h"
#include "trace.h"
#include "hw/irq.h"
#include "sysemu/sev.h"
#include "hw/boards.h"
@ -103,6 +104,9 @@ struct KVMState
#endif
KVMMemoryListener memory_listener;
QLIST_HEAD(, KVMParkedVcpu) kvm_parked_vcpus;
/* memory encryption */
void *memcrypt_handle;
};
KVMState *kvm_state;
@ -138,6 +142,15 @@ int kvm_get_max_memslots(void)
return s->nr_slots;
}
bool kvm_memcrypt_enabled(void)
{
if (kvm_state && kvm_state->memcrypt_handle) {
return true;
}
return false;
}
static KVMSlot *kvm_get_free_slot(KVMMemoryListener *kml)
{
KVMState *s = kvm_state;
@ -1636,6 +1649,18 @@ static int kvm_init(MachineState *ms)
kvm_state = s;
/*
* if memory encryption object is specified then initialize the memory
* encryption context.
*/
if (ms->memory_encryption) {
kvm_state->memcrypt_handle = sev_guest_init(ms->memory_encryption);
if (!kvm_state->memcrypt_handle) {
ret = -1;
goto err;
}
}
ret = kvm_arch_init(ms, s);
if (ret < 0) {
goto err;