From patchwork Tue May 14 22:43:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Roman Kisel X-Patchwork-Id: 13664455 X-Patchwork-Delegate: bhelgaas@google.com Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 7B983181D1B; Tue, 14 May 2024 22:45:27 +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=1715726728; cv=none; b=K1zCeqN4W+xpk3tjTEFFELyuSnB7fAqvy+1IywGYxSXErgvLXQEKOJuIfI+xgZqHtO1CxGKN4BriyhnzBvJO6Sr8/55ai2yQzMozz49Cyu8P1T24QXjVWswo7w9AOMQ5kCrkWTjT3C1vVDsYt35xi55VNHHAAh34ypN3da9LllY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715726728; c=relaxed/simple; bh=WakItw23tStfr+6wb4ZT4IxnE2d/1msBu5yJn9iUY9E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=iV7QAxZd7nubyFWgX77j59740j0pzRn5Nt9hYGDr3mvkE7w5SM4GkGuxIi1uG9mMvKotK2XRHBVbDeoI3fVHLCyhm4qhdKj/R3G12vxxNTJviEbTO6fVhX+trW3HdDj3JXMhO31MZ+UsyN7a3rZL+0FrGWReavijPdEzESzLwqQ= 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=GhPZZCx2; 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="GhPZZCx2" Received: from xps-8930.corp.microsoft.com (unknown [131.107.160.48]) by linux.microsoft.com (Postfix) with ESMTPSA id 242E52095D0C; Tue, 14 May 2024 15:45:21 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 242E52095D0C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1715726721; bh=tNavMrInayINex2Ss/cK7mDsEK6d64ATDiDMkzKu5sg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GhPZZCx25j1r3g9Qxj5sQshhjQP4zOxyEb0DkzPHh2OgJell4GEYhEhrxd5lQ07VS ZpjZGEU64DQy5pvIJsG9vN0gbPuZ4ol7NCDvJ82AzDG0bpfRcaZFe36AtMWmTQVyUe TYhGMjRt6PKFrKID6RyoMRIpSPezk3XrzaufVW58= From: Roman Kisel To: arnd@arndb.de, bhelgaas@google.com, bp@alien8.de, catalin.marinas@arm.com, dave.hansen@linux.intel.com, decui@microsoft.com, haiyangz@microsoft.com, hpa@zytor.com, kw@linux.com, kys@microsoft.com, lenb@kernel.org, lpieralisi@kernel.org, mingo@redhat.com, mhklinux@outlook.com, rafael@kernel.org, robh@kernel.org, tglx@linutronix.de, wei.liu@kernel.org, will@kernel.org, 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: ssengar@microsoft.com, sunilmut@microsoft.com, vdso@hexbites.dev Subject: [PATCH v2 2/6] drivers/hv: Enable VTL mode for arm64 Date: Tue, 14 May 2024 15:43:49 -0700 Message-ID: <20240514224508.212318-3-romank@linux.microsoft.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240514224508.212318-1-romank@linux.microsoft.com> References: <20240514224508.212318-1-romank@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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. Signed-off-by: Roman Kisel --- drivers/hv/Kconfig | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig index 862c47b191af..a5cd1365e248 100644 --- a/drivers/hv/Kconfig +++ b/drivers/hv/Kconfig @@ -5,7 +5,7 @@ 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) select PARAVIRT select X86_HV_CALLBACK_VECTOR if X86 select OF_EARLY_FLATTREE if OF @@ -15,7 +15,7 @@ config HYPERV config HYPERV_VTL_MODE bool "Enable Linux to boot in VTL context" - depends on X86_64 && HYPERV + depends on HYPERV depends on SMP default n help @@ -31,7 +31,7 @@ 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.