From: Kai Huang <kai.huang@intel.com>
To: x86@kernel.org
Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
dave.hansen@intel.com, luto@kernel.org, kvm@vger.kernel.org,
pbonzini@redhat.com, seanjc@google.com, hpa@zytor.com,
peterz@infradead.org, kirill.shutemov@linux.intel.com,
sathyanarayanan.kuppuswamy@linux.intel.com, tony.luck@intel.com,
ak@linux.intel.com, dan.j.williams@intel.com,
chang.seok.bae@intel.com, keescook@chromium.org,
hengqi.arch@bytedance.com, laijs@linux.alibaba.com,
metze@samba.org, linux-kernel@vger.kernel.org,
kai.huang@intel.com
Subject: [RFC PATCH 07/21] x86/virt/tdx: Do TDX module global initialization
Date: Mon, 28 Feb 2022 15:12:55 +1300 [thread overview]
Message-ID: <2fd6826f9df6793f030d949af8a71dc77f946817.1646007267.git.kai.huang@intel.com> (raw)
In-Reply-To: <cover.1646007267.git.kai.huang@intel.com>
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 --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;
--
2.33.1
next prev parent reply other threads:[~2022-02-28 2:15 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-28 2:12 [RFC PATCH 00/21] TDX host kernel support Kai Huang
2022-02-28 2:12 ` [RFC PATCH 01/21] x86/virt/tdx: Detect SEAM Kai Huang
2022-02-28 2:12 ` [RFC PATCH 02/21] x86/virt/tdx: Detect TDX private KeyIDs Kai Huang
2022-02-28 2:12 ` [RFC PATCH 03/21] x86/virt/tdx: Implement the SEAMCALL base function Kai Huang
2022-02-28 2:12 ` [RFC PATCH 04/21] x86/virt/tdx: Add skeleton for detecting and initializing TDX on demand Kai Huang
2022-02-28 2:12 ` [RFC PATCH 05/21] x86/virt/tdx: Detect P-SEAMLDR and TDX module Kai Huang
2022-02-28 2:12 ` [RFC PATCH 06/21] x86/virt/tdx: Shut down TDX module in case of error Kai Huang
2022-02-28 2:12 ` Kai Huang [this message]
2022-02-28 2:12 ` [RFC PATCH 08/21] x86/virt/tdx: Do logical-cpu scope TDX module initialization Kai Huang
2022-02-28 2:12 ` [RFC PATCH 09/21] x86/virt/tdx: Get information about TDX module and convertible memory Kai Huang
2022-02-28 2:12 ` [RFC PATCH 10/21] x86/virt/tdx: Add placeholder to coveret all system RAM as TDX memory Kai Huang
2022-02-28 2:12 ` [RFC PATCH 11/21] x86/virt/tdx: Choose to use " Kai Huang
2022-02-28 2:13 ` [RFC PATCH 12/21] x86/virt/tdx: Create TDMRs to cover all system RAM Kai Huang
2022-02-28 2:13 ` [RFC PATCH 13/21] x86/virt/tdx: Allocate and set up PAMTs for TDMRs Kai Huang
2022-02-28 2:13 ` [RFC PATCH 14/21] x86/virt/tdx: Set up reserved areas for all TDMRs Kai Huang
2022-02-28 2:13 ` [RFC PATCH 15/21] x86/virt/tdx: Reserve TDX module global KeyID Kai Huang
2022-02-28 2:13 ` [RFC PATCH 16/21] x86/virt/tdx: Configure TDX module with TDMRs and " Kai Huang
2022-02-28 2:13 ` [RFC PATCH 17/21] x86/virt/tdx: Configure global KeyID on all packages Kai Huang
2022-02-28 2:13 ` [RFC PATCH 18/21] x86/virt/tdx: Initialize all TDMRs Kai Huang
2022-02-28 2:13 ` [RFC PATCH 19/21] x86: Flush cache of TDX private memory during kexec() Kai Huang
2022-02-28 2:13 ` [RFC PATCH 20/21] x86/virt/tdx: Add kernel command line to opt-in TDX host support Kai Huang
2022-02-28 2:13 ` [RFC PATCH 21/21] Documentation/x86: Add documentation for " Kai Huang
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