From patchwork Mon Apr 7 20:13:28 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Roman Kisel X-Patchwork-Id: 878711 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 30EC222173C; Mon, 7 Apr 2025 20:13:45 +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=1744056826; cv=none; b=sFC35jTyUEXSxenwt6bGskRFuL6uD97tdlwZk+yh73TzvrN6h4qSBmMXPChuSm/wuOiOhkAwH9dvvxqYNTCSy8JanDBKGwd8niLWkEh+1phwD5nBY4NWxiA9MzjoMBEdbBBzCLTPeQyMkHE4dxagtvlHniUUbaBOHX2VELKzin8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744056826; c=relaxed/simple; bh=blBgF6pm9yLEWrad2z6wwWi3KNdwj0wZn7wmKXkBG4w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=IfpXbtIQYIZ6Jcqnz9XkE6FnWafWA6dFOTFnYapwe7Mf5rPbbrKRZFMwYHtQtsQKtu7yTKyTV6e96EEBCaH5/QoEsqhGkmYHyixM5sHTQrSvqnO6LgwbZr3swp55xuQnEuTGidqaKQ/DXAJrODQdvnWNYEeoOc/+tgODOgOepaw= 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=VnoktXpm; 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="VnoktXpm" Received: from romank-3650.corp.microsoft.com (unknown [131.107.160.188]) by linux.microsoft.com (Postfix) with ESMTPSA id 59D362113E7E; Mon, 7 Apr 2025 13:13:39 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 59D362113E7E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1744056819; bh=dEqY+MizYE3Tuj7oGWh4pKfuLIDZLrhKXP4HN0AHPSc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VnoktXpmnCMA6P5J4u68sf8Wczp2hON3IjXx+lXkEFEApagIgyBzbnM12H5dZjUBT scAUJf3fGyIEb6Tm8OiFENslVdk3qZJd6D/0iVAj4EaRZuvT9PV50QeRqbZtnxOa2F Lu6UimG790RR1nkD6FlO0Ad5pYtwMgMbhnv9cBsI= From: Roman Kisel To: arnd@arndb.de, bhelgaas@google.com, bp@alien8.de, catalin.marinas@arm.com, conor+dt@kernel.org, dan.carpenter@linaro.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, rafael.j.wysocki@intel.com, 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 v7 03/11] Drivers: hv: Enable VTL mode for arm64 Date: Mon, 7 Apr 2025 13:13:28 -0700 Message-ID: <20250407201336.66913-4-romank@linux.microsoft.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250407201336.66913-1-romank@linux.microsoft.com> References: <20250407201336.66913-1-romank@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig index 6c1416167bd2..eefa0b559b73 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 (X86_64 || ARM64) && 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.