From nobody Sun May 24 19:34:44 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5E6961F936; Fri, 22 May 2026 17:26:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779470770; cv=none; b=ifa8pnWOBgNxGHT2M3MoPnOF/nPVGPSBMgiGLO0nsP2H2zf6aQmITabtAL0KlwAZsDN++1eedHkrLOdhpKrDJsCovpLK5uHTEVocd+YxxFRta6bygHZXQujkMVSVjgm2GKAcUlhFZdGFGnlIho54nzgTRlH7H+7f/4rY1EtEtak= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779470770; c=relaxed/simple; bh=c3XpqIQf/Etj3T+oQKkWVs/XpFtBxjNz8RYuJBtwUcg=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=St5OwesWLeuqPwMgMer0xi9BlLGi0ls8VrFkpiW+dhk/HAvh698TGiO9FrHIWTUWgZxnPJyXRmFz/NQhSUwgt6Qi5OpdSispUbr0Y8yqUkwsj8INlCEMoaHpd/h/yfsaz0uNyNacOzS9tff/WP+2LKKnzLUW0vJExnOtmpAEnas= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=yqoekRpk; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=nEmYlU22; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="yqoekRpk"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="nEmYlU22" Date: Fri, 22 May 2026 17:26:06 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1779470768; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rFZP8JrFgA4TgEveeKiMfUgOpFiz3b5md7ovgx4HRT0=; b=yqoekRpk3XfgnEkOdoV3WlUG1gulCboDZ2GUw3Jf/4hXFsdYht95VhYw5YcWa2iJyYbX+k OunT0d59zi+6hQ+Utsyqu2uEB/FuUJrhTYsNkbYA/XIgZMhKqAZrYowLR/MbkHdHNz3WSx 117PdNDWM92XsHmxgwZBcRK6YdvaWoqd24trkS9BwIpj8huTF6hAxiyAyrBgVF9w1fFMnL q/Ows7gZqrMa81dWWWJqlFIsYuc1O3yzpOliTdxhgwFvnV33kxen35g3tjbbkzSpy0RHXh lsnyPjPF5BBhpCkV/dsRib6zgtHOt36HrIg0HBywzYr1e1FdBq1xfrvlMCCZBg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1779470768; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rFZP8JrFgA4TgEveeKiMfUgOpFiz3b5md7ovgx4HRT0=; b=nEmYlU22RHugwuy1u/Dm+TYADIpKHHOGuQhBPKdHZKELu0SCAVQ/hBZ4f6Qm0DGuf0bYOQ H6k8a6+k3QXa2JAg== From: "tip-bot2 for Chao Gao" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/tdx] x86/virt/tdx: Refresh TDX module version after update Cc: Chao Gao , Dave Hansen , Rick Edgecombe , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20260520222912.75D9589C@davehans-spike.ostc.intel.com> References: <20260520222912.75D9589C@davehans-spike.ostc.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <177947076660.711.12328270234772782097.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the x86/tdx branch of tip: Commit-ID: 6e49a980dea9ca6ca12ca78e33578d11b6752fcd Gitweb: https://git.kernel.org/tip/6e49a980dea9ca6ca12ca78e33578d11b= 6752fcd Author: Chao Gao AuthorDate: Wed, 20 May 2026 15:29:12 -07:00 Committer: Dave Hansen CommitterDate: Fri, 22 May 2026 10:20:10 -07:00 x86/virt/tdx: Refresh TDX module version after update The kernel exposes the TDX module version through sysfs so userspace can check update compatibility. That information needs to remain accurate across runtime updates. A runtime update may change the module's update_version, so refresh the cached version right after a successful update. Drop __ro_after_init from tdx_sysinfo because it is now updated at runtime. Do not refresh the rest of tdx_sysinfo, even if some values change across updates. TDX module updates are backward compatible, so existing tdx_sysinfo consumers, such as KVM, can continue to operate without seeing the new values. [ dhansen: trim changelog ] Signed-off-by: Chao Gao Signed-off-by: Dave Hansen Reviewed-by: Rick Edgecombe Link: https://patch.msgid.link/20260520133909.409394-22-chao.gao@intel.com Link: https://patch.msgid.link/20260520222912.75D9589C@davehans-spike.ostc.= intel.com --- arch/x86/virt/vmx/tdx/tdx.c | 9 ++++++++- arch/x86/virt/vmx/tdx/tdx_global_metadata.c | 2 +- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/arch/x86/virt/vmx/tdx/tdx.c b/arch/x86/virt/vmx/tdx/tdx.c index d54c2ec..b15269b 100644 --- a/arch/x86/virt/vmx/tdx/tdx.c +++ b/arch/x86/virt/vmx/tdx/tdx.c @@ -67,7 +67,7 @@ static struct tdmr_info_list tdx_tdmr_list; /* All TDX-usable memory regions. Protected by mem_hotplug_lock. */ static LIST_HEAD(tdx_memlist); =20 -static struct tdx_sys_info tdx_sysinfo __ro_after_init; +static struct tdx_sys_info tdx_sysinfo; =20 static DEFINE_RAW_SPINLOCK(sysinit_lock); =20 @@ -1321,6 +1321,13 @@ int tdx_module_run_update(void) if (ret) return ret; =20 + ret =3D get_tdx_sys_info_version(&tdx_sysinfo.version); + /* + * Only fails if there is something unexpected + * and severely wrong with the module. + */ + WARN_ON_ONCE(ret); + tdx_module_state.initialized =3D true; return 0; } diff --git a/arch/x86/virt/vmx/tdx/tdx_global_metadata.c b/arch/x86/virt/vm= x/tdx/tdx_global_metadata.c index e793dec..e49c300 100644 --- a/arch/x86/virt/vmx/tdx/tdx_global_metadata.c +++ b/arch/x86/virt/vmx/tdx/tdx_global_metadata.c @@ -7,7 +7,7 @@ * Include this file to other C file instead. */ =20 -static __init int get_tdx_sys_info_version(struct tdx_sys_info_version *sy= sinfo_version) +static int get_tdx_sys_info_version(struct tdx_sys_info_version *sysinfo_v= ersion) { int ret =3D 0; u64 val;