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From: Michael Kelley <mikelley@microsoft.com>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: Will Deacon <will@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
	Catalin Marinas <catalin.marinas@arm.com>,
	"Mark.Rutland@arm.com" <Mark.Rutland@arm.com>,
	Marc Zyngier <maz@kernel.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
	linux-efi <linux-efi@vger.kernel.org>,
	linux-arch <linux-arch@vger.kernel.org>,
	"wei.liu@kernel.org" <wei.liu@kernel.org>,
	vkuznets <vkuznets@redhat.com>, KY Srinivasan <kys@microsoft.com>,
	Sunil Muthuswamy <sunilmut@microsoft.com>,
	Boqun Feng <boqun.feng@gmail.com>
Subject: RE: [PATCH v7 10/10] Drivers: hv: Enable Hyper-V code to be built on ARM64
Date: Mon, 24 Aug 2020 17:28:49 +0000
Message-ID: <MW2PR2101MB1052425768531AC236A34A9AD7560@MW2PR2101MB1052.namprd21.prod.outlook.com> (raw)
In-Reply-To: <CAMj1kXHKDD5+Na7t=bbkqo2OaiidmnJg+RqermV-2=exj-P77A@mail.gmail.com>

From: Ard Biesheuvel <ardb@kernel.org> Sent: Monday, August 24, 2020 10:24 AM
> 
> On Mon, 24 Aug 2020 at 18:48, Michael Kelley <mikelley@microsoft.com> wrote:
> >
> > Update drivers/hv/Kconfig so CONFIG_HYPERV can be selected on
> > ARM64, causing the Hyper-V specific code to be built.
> >
> > Signed-off-by: Michael Kelley <mikelley@microsoft.com>
> > ---
> >  drivers/hv/Kconfig | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig
> > index 79e5356..1113e49 100644
> > --- a/drivers/hv/Kconfig
> > +++ b/drivers/hv/Kconfig
> > @@ -4,7 +4,8 @@ menu "Microsoft Hyper-V guest support"
> >
> >  config HYPERV
> >         tristate "Microsoft Hyper-V client drivers"
> > -       depends on X86 && ACPI && X86_LOCAL_APIC && HYPERVISOR_GUEST
> > +       depends on ACPI && \
> > +                       ((X86 && X86_LOCAL_APIC && HYPERVISOR_GUEST) || ARM64)
> >         select PARAVIRT
> >         select X86_HV_CALLBACK_VECTOR
> >         help
> 
> Given the comment in a previous patch
> 
> +/*
> + * All data structures defined in the TLFS that are shared between Hyper-V
> + * and a guest VM use Little Endian byte ordering.  This matches the default
> + * byte ordering of Linux running on ARM64, so no special handling is required.
> + */
> 
> shouldn't this depend on !CONFIG_CPU_BIG_ENDIAN ?

Yes indeed.  I'll add it.

Michael

  reply index

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-24 16:46 [PATCH v7 00/10] Enable Linux guests on Hyper-V " Michael Kelley
2020-08-24 16:46 ` [PATCH v7 01/10] arm/arm64: smccc-1.1: Add vendor specific owner definition Michael Kelley
2020-08-24 16:46 ` [PATCH v7 02/10] arm64: hyperv: Add core Hyper-V include files Michael Kelley
2020-08-24 18:38   ` Arnd Bergmann
2020-08-24 16:46 ` [PATCH v7 03/10] arm64: hyperv: Add hypercall and register access functions Michael Kelley
2020-08-24 16:46 ` [PATCH v7 04/10] arm64: hyperv: Add memory alloc/free functions for Hyper-V size pages Michael Kelley
2020-08-24 16:46 ` [PATCH v7 05/10] arm64: hyperv: Add interrupt handlers for VMbus and stimer Michael Kelley
2020-08-24 18:54   ` Arnd Bergmann
2020-08-25 22:04     ` Michael Kelley
2020-08-26  7:14       ` Arnd Bergmann
2020-08-24 16:46 ` [PATCH v7 06/10] arm64: hyperv: Add kexec and panic handlers Michael Kelley
2020-08-24 16:46 ` [PATCH v7 07/10] arm64: hyperv: Initialize hypervisor on boot Michael Kelley
2020-08-24 18:33   ` Arnd Bergmann
2020-08-25 21:20     ` Michael Kelley
2020-08-26  7:18       ` Arnd Bergmann
2020-08-24 16:46 ` [PATCH v7 08/10] Drivers: hv: vmbus: Add hooks for per-CPU IRQ Michael Kelley
2020-08-24 16:46 ` [PATCH v7 09/10] arm64: efi: Export screen_info Michael Kelley
2020-08-24 17:21   ` Ard Biesheuvel
2020-08-24 17:35   ` Greg KH
2020-08-24 17:40     ` Michael Kelley
2020-08-24 17:52       ` Greg KH
2020-08-24 16:46 ` [PATCH v7 10/10] Drivers: hv: Enable Hyper-V code to be built on ARM64 Michael Kelley
2020-08-24 17:24   ` Ard Biesheuvel
2020-08-24 17:28     ` Michael Kelley [this message]
2020-08-25  8:47     ` Ben Dooks

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