Re: [RFC PATCH v3 06/36] i386/tdx: Get tdx_capabilities via KVM_TDX_CAPABILITIES

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On 3/18/2022 10:08 AM, Isaku Yamahata wrote:
On Thu, Mar 17, 2022 at 09:58:43PM +0800,
Xiaoyao Li <xiaoyao.li@xxxxxxxxx> wrote:

diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c
index e3b94373b316..bed337e5ba18 100644
--- a/target/i386/kvm/tdx.c
+++ b/target/i386/kvm/tdx.c
@@ -14,10 +14,77 @@
  #include "qemu/osdep.h"
  #include "qapi/error.h"
  #include "qom/object_interfaces.h"
+#include "sysemu/kvm.h"
#include "hw/i386/x86.h"
  #include "tdx.h"
+enum tdx_ioctl_level{
+    TDX_VM_IOCTL,
+    TDX_VCPU_IOCTL,
+};
+
+static int __tdx_ioctl(void *state, enum tdx_ioctl_level level, int cmd_id,
+                        __u32 metadata, void *data)
+{
+    struct kvm_tdx_cmd tdx_cmd;
+    int r;
+
+    memset(&tdx_cmd, 0x0, sizeof(tdx_cmd));
+
+    tdx_cmd.id = cmd_id;
+    tdx_cmd.metadata = metadata;
+    tdx_cmd.data = (__u64)(unsigned long)data;
+
+    switch (level) {
+    case TDX_VM_IOCTL:
+        r = kvm_vm_ioctl(kvm_state, KVM_MEMORY_ENCRYPT_OP, &tdx_cmd);
+        break;
+    case TDX_VCPU_IOCTL:
+        r = kvm_vcpu_ioctl(state, KVM_MEMORY_ENCRYPT_OP, &tdx_cmd);
+        break;
+    default:
+        error_report("Invalid tdx_ioctl_level %d", level);
+        exit(1);
+    }
+
+    return r;
+}
+
+#define tdx_vm_ioctl(cmd_id, metadata, data) \
+        __tdx_ioctl(NULL, TDX_VM_IOCTL, cmd_id, metadata, data)
+
+#define tdx_vcpu_ioctl(cpu, cmd_id, metadata, data) \
+        __tdx_ioctl(cpu, TDX_VCPU_IOCTL, cmd_id, metadata, data)

No point to use macro.  Normal (inline) function can works.


OK. Will change it to inline function.



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