From patchwork Fri Mar 7 22:02:58 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Kisel X-Patchwork-Id: 871299 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 5C45E257AED; Fri, 7 Mar 2025 22:03:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741384990; cv=none; b=JMkbqEypO4bh8otitCb5hE/M7VkIbhb1kbUDWLMcLetj0aSbMt8cBYnXVml0DXQAR0rU1kOQIZMQ9LejOcUxxIeZFlqUR4t+aTdwp5/oUCzJsnhYW33It+sNJ9WbQNfij5HlHnwzZ957DZheZ+BIlqIRgpAd1Aevt7+1gqKn6rs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741384990; c=relaxed/simple; bh=cvz/ZTsNhYKR7Jb164PPQT4b9Cqedmh8XCmTmf4kZQE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hMlqHJFToEzLFUGBKVo2peJftapzJUHr63cKdD6PvT9miab3d6xqB0/JiZxbWjzNauyF7lCtOctCGgxPyjRm7JilqzF19v+hJmN6M+ddVp93p/gfF7bcbyOws1IDT8zsW2ViJF3RsxJhiKII2b5WNpf2wDsfu/bAgsM8i3mQh3w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=MnViV2co; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="MnViV2co" Received: from romank-3650.corp.microsoft.com (unknown [131.107.160.188]) by linux.microsoft.com (Postfix) with ESMTPSA id C7C432038F46; Fri, 7 Mar 2025 14:03:07 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com C7C432038F46 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1741384988; bh=DHCZgN2nv/auyPY8jlf5/CxWk9DcxsvUe9NZhUMgcn4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MnViV2cok80SEu3yXZPLruR5ncKfFuUB/DN7G00ORVAuMxkiQGqPfq064cRXssxSt SfJhMBk2aVXinFXplzZThgtTbdnZR2XdvsyJlDk6Q6MLVD9keTNL32J4TCwZ6P9x4k ig35M2awNRwyMkTjxYPev4uCYmeSyu1H+cHpbIIo= From: Roman Kisel To: arnd@arndb.de, bhelgaas@google.com, bp@alien8.de, catalin.marinas@arm.com, conor+dt@kernel.org, dave.hansen@linux.intel.com, decui@microsoft.com, haiyangz@microsoft.com, hpa@zytor.com, joey.gouly@arm.com, krzk+dt@kernel.org, kw@linux.com, kys@microsoft.com, lenb@kernel.org, lpieralisi@kernel.org, manivannan.sadhasivam@linaro.org, mark.rutland@arm.com, maz@kernel.org, mingo@redhat.com, oliver.upton@linux.dev, rafael@kernel.org, robh@kernel.org, ssengar@linux.microsoft.com, sudeep.holla@arm.com, suzuki.poulose@arm.com, tglx@linutronix.de, wei.liu@kernel.org, will@kernel.org, yuzenghui@huawei.com, devicetree@vger.kernel.org, kvmarm@lists.linux.dev, linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, x86@kernel.org Cc: apais@microsoft.com, benhill@microsoft.com, bperkins@microsoft.com, sunilmut@microsoft.com Subject: [PATCH hyperv-next v5 06/11] arm64, x86: hyperv: Report the VTL the system boots in Date: Fri, 7 Mar 2025 14:02:58 -0800 Message-ID: <20250307220304.247725-7-romank@linux.microsoft.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250307220304.247725-1-romank@linux.microsoft.com> References: <20250307220304.247725-1-romank@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The hyperv guest code might run in various Virtual Trust Levels. Report the level when the kernel boots in the non-default (0) one. Signed-off-by: Roman Kisel --- arch/arm64/hyperv/mshyperv.c | 2 ++ arch/x86/hyperv/hv_vtl.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm64/hyperv/mshyperv.c b/arch/arm64/hyperv/mshyperv.c index a7db03f5413d..3bc16dbee758 100644 --- a/arch/arm64/hyperv/mshyperv.c +++ b/arch/arm64/hyperv/mshyperv.c @@ -108,6 +108,8 @@ static int __init hyperv_init(void) if (ms_hyperv.priv_high & HV_ACCESS_PARTITION_ID) hv_get_partition_id(); ms_hyperv.vtl = get_vtl(); + if (ms_hyperv.vtl > 0) /* non default VTL */ + pr_info("Linux runs in Hyper-V Virtual Trust Level %d\n", ms_hyperv.vtl); ms_hyperv_late_init(); diff --git a/arch/x86/hyperv/hv_vtl.c b/arch/x86/hyperv/hv_vtl.c index 4e1b1e3b5658..c21bee7e8ff3 100644 --- a/arch/x86/hyperv/hv_vtl.c +++ b/arch/x86/hyperv/hv_vtl.c @@ -24,7 +24,7 @@ static bool __init hv_vtl_msi_ext_dest_id(void) void __init hv_vtl_init_platform(void) { - pr_info("Linux runs in Hyper-V Virtual Trust Level\n"); + pr_info("Linux runs in Hyper-V Virtual Trust Level %d\n", ms_hyperv.vtl); x86_platform.realmode_reserve = x86_init_noop; x86_platform.realmode_init = x86_init_noop;