On 22/3/24 19:11, Paolo Bonzini wrote:
From: Xiaoyao Li <[email protected]>
Introduce the helper functions to set the attributes of a range of
memory to private or shared.
This is necessary to notify KVM the private/shared attribute of each gpa
range. KVM needs the information to decide the GPA needs to be mapped at
hva-based shared memory or guest_memfd based private memory.
Signed-off-by: Xiaoyao Li <[email protected]>
Message-ID: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
---
include/sysemu/kvm.h | 4 ++++
accel/kvm/kvm-all.c | 31 +++++++++++++++++++++++++++++++
2 files changed, 35 insertions(+)
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 54f4d83a370..bda309d5ffa 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -536,4 +536,8 @@ void kvm_mark_guest_state_protected(void);
* reported for the VM.
*/
bool kvm_hwpoisoned_mem(void);
+
+int kvm_set_memory_attributes_private(hwaddr start, hwaddr size);
+int kvm_set_memory_attributes_shared(hwaddr start, hwaddr size);
uint64_t size? (kvm_memory_attributes::size is __u64).
