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[Qemu-devel] [RFC PATCH v3 06/18] kvm: add memory encryption APIs
From: |
Brijesh Singh |
Subject: |
[Qemu-devel] [RFC PATCH v3 06/18] kvm: add memory encryption APIs |
Date: |
Tue, 1 Nov 2016 11:52:50 -0400 |
User-agent: |
StGit/0.17.1-dirty |
Add APIs to provide guest memory encryption support.
Signed-off-by: Brijesh Singh <address@hidden>
---
include/sysemu/kvm.h | 8 ++++++
kvm-all.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 72 insertions(+)
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index df67cc0..db00673 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -227,6 +227,14 @@ int kvm_init_vcpu(CPUState *cpu);
int kvm_cpu_exec(CPUState *cpu);
int kvm_destroy_vcpu(CPUState *cpu);
+bool kvm_memory_encryption_enabled(void);
+int kvm_memory_encryption_start(void);
+int kvm_memory_encryption_finish(void);
+void *kvm_memory_encryption_get_handle(void);
+void kvm_memory_encryption_set_debug_ops(MemoryRegion *mr);
+int kvm_memory_encryption_dec(uint8_t *dst, const uint8_t *src, uint32_t len);
+int kvm_memory_encryption_enc(uint8_t *dst, const uint8_t *src, uint32_t len);
+
#ifdef NEED_CPU_H
#include "cpu.h"
diff --git a/kvm-all.c b/kvm-all.c
index 330219e..86c810e 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -36,6 +36,7 @@
#include "qemu/event_notifier.h"
#include "trace.h"
#include "hw/irq.h"
+#include "sysemu/security-policy.h"
#include "hw/boards.h"
@@ -101,6 +102,16 @@ struct KVMState
#endif
KVMMemoryListener memory_listener;
QLIST_HEAD(, KVMParkedVcpu) kvm_parked_vcpus;
+
+ /* memory encryption support */
+ void *ehandle;
+ int (*mem_encrypt_start)(void *ehandle);
+ int (*mem_encrypt_finish)(void *ehandle);
+ int (*mem_encrypt_dec)(void *ehandle, uint8_t *dst, const uint8_t *src,
+ uint32_t len);
+ int (*mem_encrypt_enc)(void *ehandle, uint8_t *dst, const uint8_t *src,
+ uint32_t len);
+ void (*mem_encrypt_debug_ops)(void *ehandle, MemoryRegion *mr);
};
KVMState *kvm_state;
@@ -127,6 +138,59 @@ static const KVMCapabilityInfo kvm_required_capabilites[]
= {
KVM_CAP_LAST_INFO
};
+bool kvm_memory_encryption_enabled(void)
+{
+ return kvm_state->ehandle ? true : false;
+}
+
+int kvm_memory_encryption_start(void)
+{
+ if (kvm_state->mem_encrypt_start) {
+ return kvm_state->mem_encrypt_start(kvm_state->ehandle);
+ }
+
+ return 1;
+}
+
+int kvm_memory_encryption_finish(void)
+{
+ if (kvm_state->mem_encrypt_finish) {
+ return kvm_state->mem_encrypt_finish(kvm_state->ehandle);
+ }
+
+ return 1;
+}
+
+int kvm_memory_encryption_dec(uint8_t *dst, const uint8_t *src, uint32_t len)
+{
+ if (kvm_state->mem_encrypt_dec) {
+ return kvm_state->mem_encrypt_dec(kvm_state->ehandle, dst, src, len);
+ }
+
+ return 1;
+}
+
+int kvm_memory_encryption_enc(uint8_t *dst, const uint8_t *src, uint32_t len)
+{
+ if (kvm_state->mem_encrypt_enc) {
+ return kvm_state->mem_encrypt_enc(kvm_state->ehandle, dst, src, len);
+ }
+
+ return 1;
+}
+
+void kvm_memory_encryption_set_debug_ops(MemoryRegion *mr)
+{
+ if (kvm_state->mem_encrypt_debug_ops) {
+ return kvm_state->mem_encrypt_debug_ops(kvm_state->ehandle, mr);
+ }
+}
+
+void *kvm_memory_encryption_get_handle(void)
+{
+ return kvm_state->ehandle;
+}
+
int kvm_get_max_memslots(void)
{
KVMState *s = KVM_STATE(current_machine->accelerator);
- [Qemu-devel] [RFC PATCH v3 00/18] x86: Secure Encrypted Virtualization (AMD), Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 01/18] memattrs: add debug attrs, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 02/18] exec: add guest RAM read and write ops, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 03/18] exec: add debug version of physical memory read and write apis, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 04/18] monitor: use debug version of memory access apis, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 05/18] core: add new security-policy object, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 06/18] kvm: add memory encryption APIs,
Brijesh Singh <=
- [Qemu-devel] [RFC PATCH v3 07/18] sev: add Secure Encrypted Virtulization (SEV) support, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 08/18] hmp: display memory encryption support in 'info kvm', Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 09/18] core: loader: create memory encryption context before copying data, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 10/18] sev: add LAUNCH_START command, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 11/18] sev: add LAUNCH_UPDATE command, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 12/18] sev: add LAUNCH_FINISH command, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 13/18] sev: add DEBUG_DECRYPT command, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 14/18] sev: add DEBUG_ENCRYPT command, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 16/18] target-i386: add cpuid Fn8000_001f, Brijesh Singh, 2016/11/01
- [Qemu-devel] [RFC PATCH v3 17/18] i386: clear C-bit in SEV guest page table walk, Brijesh Singh, 2016/11/01