diff mbox series

[RFC,07/21] x86/virt/tdx: Do TDX module global initialization

Message ID 2fd6826f9df6793f030d949af8a71dc77f946817.1646007267.git.kai.huang@intel.com (mailing list archive)
State New, archived
Headers show
Series TDX host kernel support | expand

Commit Message

Huang, Kai Feb. 28, 2022, 2:12 a.m. UTC 
Do the TDX module global initialization which requires calling
TDH.SYS.INIT once on any logical cpu.

Signed-off-by: Kai Huang <kai.huang@intel.com>
---
 arch/x86/virt/vmx/tdx.c | 11 ++++++++++-
 arch/x86/virt/vmx/tdx.h |  1 +
 2 files changed, 11 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/x86/virt/vmx/tdx.c b/arch/x86/virt/vmx/tdx.c
index 17f16ec6cb28..197c721d5388 100644
--- a/arch/x86/virt/vmx/tdx.c
+++ b/arch/x86/virt/vmx/tdx.c
@@ -464,11 +464,20 @@  static int __tdx_detect(void)
 
 static int init_tdx_module(void)
 {
+	int ret;
+
+	/* TDX module global initialization */
+	ret = seamcall(TDH_SYS_INIT, 0, 0, 0, 0, NULL, NULL);
+	if (ret)
+		goto out;
+
 	/*
 	 * Return -EFAULT until all steps of TDX module
 	 * initialization are done.
 	 */
-	return -EFAULT;
+	ret = -EFAULT;
+out:
+	return ret;
 }
 
 static void shutdown_tdx_module(void)
diff --git a/arch/x86/virt/vmx/tdx.h b/arch/x86/virt/vmx/tdx.h
index dcc1f6dfe378..f0983b1936d8 100644
--- a/arch/x86/virt/vmx/tdx.h
+++ b/arch/x86/virt/vmx/tdx.h
@@ -38,6 +38,7 @@  struct p_seamldr_info {
 /*
  * TDX module SEAMCALL leaf functions
  */
+#define TDH_SYS_INIT		33
 #define TDH_SYS_LP_SHUTDOWN	44
 
 struct tdx_module_output;