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Subject[PATCH v3 07/21] x86/virt/tdx: Do TDX module global initialization
Date
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/tdx.c | 11 ++++++++++-
arch/x86/virt/vmx/tdx/tdx.h | 1 +
2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/x86/virt/vmx/tdx/tdx.c b/arch/x86/virt/vmx/tdx/tdx.c
index faf8355965a5..5c2f3a30be2f 100644
--- a/arch/x86/virt/vmx/tdx/tdx.c
+++ b/arch/x86/virt/vmx/tdx/tdx.c
@@ -463,11 +463,20 @@ 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/tdx.h b/arch/x86/virt/vmx/tdx/tdx.h
index dcc1f6dfe378..f0983b1936d8 100644
--- a/arch/x86/virt/vmx/tdx/tdx.h
+++ b/arch/x86/virt/vmx/tdx/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;
--
2.35.1
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