From patchwork Wed Feb 12 01:43:17 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Roman Kisel X-Patchwork-Id: 13970918 X-Patchwork-Delegate: kw@linux.com Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id DD51E78F4E; Wed, 12 Feb 2025 01:43:24 +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=1739324606; cv=none; b=Gd+mM/PQYOxYfT/5LE/wwvbobS0bPxtSCHglopjRSZWSXN5GmWRoXw/XXTHGlwPQMq8VHyUqjAYbsCyeGYD1+HmDDo9m/crgNOIWw9AA8bBSnOmqnSeJ5f5ekSm+ZkQbq7heDkQknykDJTfrMahTXELoWH/vG3h7oOyyo5zO75A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739324606; c=relaxed/simple; bh=6wOswjEyVshRcyj6xmW7UdxxhfituqIr+zoTiHBhT6w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=U8He8q3n9WRBke9uMgfmo4ciJPsAKK7rORD4Gm8m08h45bQjY2k15xy0Idqk2w69MhPnnnp5EAm7Cb4KomEDslHO8rrMvSWH1xaGyZwhVYxWH6fcTZYRqwm+8erDEdThgYpzrucCfsepB33bm3zI6fEg3yB8W1tft7KPcw/AIGQ= 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=DRazXyTk; 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="DRazXyTk" Received: from romank-3650.corp.microsoft.com (unknown [131.107.160.188]) by linux.microsoft.com (Postfix) with ESMTPSA id D69412107AB9; Tue, 11 Feb 2025 17:43:23 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com D69412107AB9 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1739324604; bh=AAZd/a36HARyHdp+510YAxs0/PoFjrLrLsZ3rfIrEhE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DRazXyTkBQM8jzof7aBxhuYIn9yf6y5Uw4Ucf1WNgwMy8MWhti7O4mWwec00Eh/4B S075Q4SOZR42Uzp41zFF8I0iJgdMqcSBeob1cw8rKc9sXGkT5LzlmEDefc6Ssz/0Ao rIC8G8gG/Zzljm3g63sidPg3YQLjY6SaLnfWm70I= 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, krzk+dt@kernel.org, kw@linux.com, kys@microsoft.com, lpieralisi@kernel.org, manivannan.sadhasivam@linaro.org, mingo@redhat.com, robh@kernel.org, ssengar@linux.microsoft.com, tglx@linutronix.de, wei.liu@kernel.org, will@kernel.org, devicetree@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: benhill@microsoft.com, bperkins@microsoft.com, sunilmut@microsoft.com Subject: [PATCH hyperv-next v4 2/6] Drivers: hv: Enable VTL mode for arm64 Date: Tue, 11 Feb 2025 17:43:17 -0800 Message-ID: <20250212014321.1108840-3-romank@linux.microsoft.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250212014321.1108840-1-romank@linux.microsoft.com> References: <20250212014321.1108840-1-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 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..db9912ef96a8 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 || 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.