[PATCH v1 1/1] virt: acrn: Mark the uuid field as unused

From: Andy Shevchenko
Date: Tue Jun 07 2022 - 14:19:50 EST


After the commits for userspace [1][2] the uuid field is not being
used in the ACRN code. Update kernel to reflect these changes.
I.e. we do the following:
- adding a comment explaining that it's not used anymore
- replacing the specific type by a raw buffer
- updating the example code accordingly

[1]: https://github.com/projectacrn/acrn-hypervisor/commit/da0d24326ed6
[2]: https://github.com/projectacrn/acrn-hypervisor/commit/bb0327e70097

Fixes: 5b06931d7f8b ("sample/acrn: Introduce a sample of HSM ioctl interface usage")
Fixes: 9c5137aedd11 ("virt: acrn: Introduce VM management interfaces")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
include/uapi/linux/acrn.h | 5 ++---
samples/acrn/vm-sample.c | 3 ---
2 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/include/uapi/linux/acrn.h b/include/uapi/linux/acrn.h
index ccf47ed92500..04fa83647ae5 100644
--- a/include/uapi/linux/acrn.h
+++ b/include/uapi/linux/acrn.h
@@ -12,7 +12,6 @@
#define _UAPI_ACRN_H

#include <linux/types.h>
-#include <linux/uuid.h>

#define ACRN_IO_REQUEST_MAX 16

@@ -186,7 +185,7 @@ struct acrn_ioreq_notify {
* @reserved0: Reserved and must be 0
* @vcpu_num: Number of vCPU in the VM. Return from hypervisor.
* @reserved1: Reserved and must be 0
- * @uuid: UUID of the VM. Pass to hypervisor directly.
+ * @uuid: Reserved (used to be UUID of the VM)
* @vm_flag: Flag of the VM creating. Pass to hypervisor directly.
* @ioreq_buf: Service VM GPA of I/O request buffer. Pass to
* hypervisor directly.
@@ -198,7 +197,7 @@ struct acrn_vm_creation {
__u16 reserved0;
__u16 vcpu_num;
__u16 reserved1;
- guid_t uuid;
+ __u8 uuid[16];
__u64 vm_flag;
__u64 ioreq_buf;
__u64 cpu_affinity;
diff --git a/samples/acrn/vm-sample.c b/samples/acrn/vm-sample.c
index b2dad47a77a0..7abd68b20153 100644
--- a/samples/acrn/vm-sample.c
+++ b/samples/acrn/vm-sample.c
@@ -29,8 +29,6 @@ static struct acrn_io_request *io_req_buf = (struct acrn_io_request *)io_request

__u16 vcpu_num;
__u16 vmid;
-/* POST_STANDARD_VM_UUID1, refer to https://github.com/projectacrn/acrn-hypervisor/blob/master/hypervisor/include/common/vm_uuids.h */
-guid_t vm_uuid = GUID_INIT(0x385479d2, 0xd625, 0xe811, 0x86, 0x4e, 0xcb, 0x7a, 0x18, 0xb3, 0x46, 0x43);

int hsm_fd;
int is_running = 1;
@@ -63,7 +61,6 @@ int main(int argc, char **argv)
}
hsm_fd = open("/dev/acrn_hsm", O_RDWR|O_CLOEXEC);

- memcpy(&create_vm.uuid, &vm_uuid, 16);
create_vm.ioreq_buf = (__u64)io_req_buf;
ret = ioctl(hsm_fd, ACRN_IOCTL_CREATE_VM, &create_vm);
printf("Created VM! [%d]\n", ret);
--
2.35.1