From patchwork Fri Mar 7 22:02:55 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Roman Kisel X-Patchwork-Id: 14007236 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 489A7C28B28 for ; Fri, 7 Mar 2025 22:09:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=LpTpRt4zyFlRJYD8tPLZbpAYbMwzKTWzeKLZA5iBaMI=; b=RP7KQNlGm3K0om/oCh40j/4+7g bTO74nsucN2E+az1DjYhy/uA7yyMP64kOh3A2eSx7qICIkkzpMp2G3u2spl4Fra6qsZwH3CZpKB93 v7SJWx3IMOTVpgu3P3AhZlRk0qrpHXqPdAPwJWvdodOENE2VQLfqEliaePzBgNHr1iW0S0kbihYSk 03LLTd3JgOUgFuzIdhNj4M27/TQTlJKVBXyGZOwDZffSAUmhzZ4G4ULrZlom0bJJm/3ntNS2M6NE6 F0sfE6U1SCrXRiRegvFDL4Gk55HpdS+oLo25FUjfqOaYiQoiv8VVxJl/AmAZUiXDaDsSylVAAqz0R ZrdhBJmg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tqft3-0000000FfZ9-3CCi; Fri, 07 Mar 2025 22:09:45 +0000 Received: from linux.microsoft.com ([13.77.154.182]) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tqfmd-0000000Fdxb-2ZIF for linux-arm-kernel@lists.infradead.org; Fri, 07 Mar 2025 22:03:09 +0000 Received: from romank-3650.corp.microsoft.com (unknown [131.107.160.188]) by linux.microsoft.com (Postfix) with ESMTPSA id 9CBAB2038F43; Fri, 7 Mar 2025 14:03:06 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 9CBAB2038F43 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1741384986; bh=LpTpRt4zyFlRJYD8tPLZbpAYbMwzKTWzeKLZA5iBaMI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a7kCOSptSaA3b1ke3hYkm1YaReZW6KqfsuH8JemiqDUPwWDR8tIBFOuUslpthcXvR mgplFjyvk4oTCp95w+o/GwAaaR4hEGRpKv4x96tjymfJsSAhw0ANPfMCvl/WVvtpJn 4ZRMgYfTn2fRDyXs5ycChpFhL1poolLT7jbZMoMc= 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 03/11] Drivers: hv: Enable VTL mode for arm64 Date: Fri, 7 Mar 2025 14:02:55 -0800 Message-ID: <20250307220304.247725-4-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> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250307_140307_678330_A70C9F6C X-CRM114-Status: GOOD ( 13.76 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Kconfig dependencies for arm64 guests on Hyper-V require that be ACPI enabled, and limit VTL mode to x86/x64. To enable VTL mode on arm64 as well, update the dependencies. Since VTL mode requires DeviceTree instead of ACPI, don’t require arm64 guests on Hyper-V to have ACPI unconditionally. Signed-off-by: Roman Kisel --- drivers/hv/Kconfig | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig index 862c47b191af..c37b1a44e580 100644 --- a/drivers/hv/Kconfig +++ b/drivers/hv/Kconfig @@ -5,18 +5,20 @@ menu "Microsoft Hyper-V guest support" config HYPERV tristate "Microsoft Hyper-V client drivers" depends on (X86 && X86_LOCAL_APIC && HYPERVISOR_GUEST) \ - || (ACPI && ARM64 && !CPU_BIG_ENDIAN) + || (ARM64 && !CPU_BIG_ENDIAN) + depends on (ACPI || HYPERV_VTL_MODE) select PARAVIRT select X86_HV_CALLBACK_VECTOR if X86 - select OF_EARLY_FLATTREE if OF help Select this option to run Linux as a Hyper-V client operating system. config HYPERV_VTL_MODE bool "Enable Linux to boot in VTL context" - depends on X86_64 && HYPERV + depends on (X86_64 || ARM64) depends on SMP + select OF_EARLY_FLATTREE + select OF default n help Virtual Secure Mode (VSM) is a set of hypervisor capabilities and @@ -31,7 +33,7 @@ config HYPERV_VTL_MODE Select this option to build a Linux kernel to run at a VTL other than the normal VTL0, which currently is only VTL2. This option - initializes the x86 platform for VTL2, and adds the ability to boot + initializes the kernel to run in VTL2, and adds the ability to boot secondary CPUs directly into 64-bit context as required for VTLs other than 0. A kernel built with this option must run at VTL2, and will not run as a normal guest.