linux-kernel - [RFC PATCH 20/20] x86/virt/seamldr: Enable TD-Preserving Updates

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250523095322.88774-21-chao.gao@intel.com>
Date: Fri, 23 May 2025 02:52:43 -0700
From: Chao Gao <chao.gao@...el.com>
To: linux-coco@...ts.linux.dev,
	x86@...nel.org,
	kvm@...r.kernel.org
Cc: seanjc@...gle.com,
	pbonzini@...hat.com,
	eddie.dong@...el.com,
	kirill.shutemov@...el.com,
	dave.hansen@...el.com,
	dan.j.williams@...el.com,
	kai.huang@...el.com,
	isaku.yamahata@...el.com,
	elena.reshetova@...el.com,
	rick.p.edgecombe@...el.com,
	Chao Gao <chao.gao@...el.com>,
	Farrah Chen <farrah.chen@...el.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	linux-kernel@...r.kernel.org
Subject: [RFC PATCH 20/20] x86/virt/seamldr: Enable TD-Preserving Updates

All necessary steps for TD-Preserving updates have been integrated.
Remove the temporary guard to enable TD-Preserving updates.

Signed-off-by: Chao Gao <chao.gao@...el.com>
Tested-by: Farrah Chen <farrah.chen@...el.com>
---
 arch/x86/virt/vmx/tdx/seamldr.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/arch/x86/virt/vmx/tdx/seamldr.c b/arch/x86/virt/vmx/tdx/seamldr.c
index fe8f98701429..c6e40a7418d3 100644
--- a/arch/x86/virt/vmx/tdx/seamldr.c
+++ b/arch/x86/virt/vmx/tdx/seamldr.c
@@ -350,12 +350,6 @@ static int do_seamldr_install_module(void *params)
 	return ret;
 }
 
-/*
- * Temporary flag to guard TD-Preserving updates. This will be removed once
- * all necessary components for its support are integrated.
- */
-static bool td_preserving_ready;
-
 DEFINE_FREE(free_seamldr_params, struct seamldr_params *,
 	    if (!IS_ERR_OR_NULL(_T)) free_seamldr_params(_T))
 
@@ -365,9 +359,6 @@ static int seamldr_install_module(const u8 *data, u32 size)
 							  GFP_KERNEL);
 	int ret;
 
-	if (!td_preserving_ready)
-		return -EOPNOTSUPP;
-
 	if (!info)
 		return -ENOMEM;
 
-- 
2.47.1