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[Qemu-devel] [PATCH v5 15/23] sev: add command to encrypt guest memory r
From: |
Brijesh Singh |
Subject: |
[Qemu-devel] [PATCH v5 15/23] sev: add command to encrypt guest memory region |
Date: |
Wed, 6 Dec 2017 14:03:38 -0600 |
The KVM_SEV_LAUNCH_UPDATE_DATA command is used to encrypt a guest memory
region using the VM Encryption Key created using LAUNCH_START.
Signed-off-by: Brijesh Singh <address@hidden>
---
accel/kvm/kvm-all.c | 2 ++
accel/kvm/sev.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
include/sysemu/sev.h | 1 +
3 files changed, 47 insertions(+)
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index 54a0fd6097fb..d35eebb97901 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -1675,6 +1675,8 @@ static int kvm_init(MachineState *ms)
if (!kvm_state->memcrypt_handle) {
goto err;
}
+
+ kvm_state->memcrypt_encrypt_data = sev_encrypt_data;
}
ret = kvm_arch_init(ms, s);
diff --git a/accel/kvm/sev.c b/accel/kvm/sev.c
index 74eb67526bd0..83fc950bd3ac 100644
--- a/accel/kvm/sev.c
+++ b/accel/kvm/sev.c
@@ -368,6 +368,37 @@ sev_launch_start(SEVState *s)
return 0;
}
+static int
+sev_launch_update_data(uint8_t *addr, uint64_t len)
+{
+ int ret, fw_error;
+ struct kvm_sev_launch_update_data *update;
+
+ if (addr == NULL || len <= 0) {
+ return 1;
+ }
+
+ update = g_malloc0(sizeof(*update));
+ if (!update) {
+ return 1;
+ }
+
+ update->uaddr = (__u64)addr;
+ update->len = len;
+ ret = sev_ioctl(KVM_SEV_LAUNCH_UPDATE_DATA, update, &fw_error);
+ if (ret) {
+ error_report("%s: LAUNCH_UPDATE ret=%d fw_error=%d '%s'",
+ __func__, ret, fw_error, fw_error_to_str(fw_error));
+ goto err;
+ }
+
+ DPRINTF("SEV: LAUNCH_UPDATE_DATA %#lx+%#lx\n", (unsigned long)addr, len);
+
+err:
+ g_free(update);
+ return ret;
+}
+
void *
sev_guest_init(const char *id)
{
@@ -417,6 +448,19 @@ err:
return NULL;
}
+int
+sev_encrypt_data(void *handle, uint8_t *ptr, uint64_t len)
+{
+ SEVState *s = (SEVState *)handle;
+
+ /* if SEV is in update state then encrypt the data else do nothing */
+ if (s->cur_state == SEV_STATE_LUPDATE) {
+ return sev_launch_update_data(ptr, len);
+ }
+
+ return 0;
+}
+
static void
sev_register_types(void)
{
diff --git a/include/sysemu/sev.h b/include/sysemu/sev.h
index 45b464cc96f5..b1ea3f805290 100644
--- a/include/sysemu/sev.h
+++ b/include/sysemu/sev.h
@@ -69,6 +69,7 @@ struct SEVState {
typedef struct SEVState SEVState;
void *sev_guest_init(const char *id);
+int sev_encrypt_data(void *handle, uint8_t *ptr, uint64_t len);
#endif
--
2.9.5
- [Qemu-devel] [PATCH v5 04/23] monitor/i386: use debug APIs when accessing guest memory, (continued)
- [Qemu-devel] [PATCH v5 04/23] monitor/i386: use debug APIs when accessing guest memory, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 06/23] machine: add -memory-encryption property, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 07/23] kvm: update kvm.h to include memory encryption ioctls, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 08/23] docs: add AMD Secure Encrypted Virtualization (SEV), Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 09/23] accel: add Secure Encrypted Virtulization (SEV) object, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 10/23] sev: add command to initialize the memory encryption context, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 11/23] sev: register the guest memory range which may contain encrypted data, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 12/23] kvm: introduce memory encryption APIs, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 13/23] hmp: display memory encryption support in 'info kvm', Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 14/23] sev: add command to create launch memory encryption context, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 15/23] sev: add command to encrypt guest memory region,
Brijesh Singh <=
- [Qemu-devel] [PATCH v5 17/23] qapi: add SEV_MEASUREMENT event, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 16/23] target/i386: encrypt bios rom, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 18/23] sev: emit the SEV_MEASUREMENT event, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 19/23] sev: Finalize the SEV guest launch flow, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 20/23] hw: i386: set ram_debug_ops when memory encryption is enabled, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 21/23] sev: add debug encrypt and decrypt commands, Brijesh Singh, 2017/12/06
- [Qemu-devel] [PATCH v5 23/23] sev: add migration blocker, Brijesh Singh, 2017/12/06