From mboxrd@z Thu Jan 1 00:00:00 1970 From: Riku Voipio Subject: Re: [RFC] ARM VM System Sepcification Date: Fri, 28 Feb 2014 15:38:10 +0200 Message-ID: References: <20140226183454.GA14639@cbox> <11174980.YJ21cfsHoG@wuerfel> <5AA88E43-1A40-4409-9A56-334988483843@suse.de> <6039706.L1ZWvgjHF0@wuerfel> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7845788444180984657==" Cc: "cross-distro-cunTk1MwBs8s++Sfvej+rw@public.gmane.org" , Ian Campbell , Arnd Bergmann , Rob Herring , Michael Casadevall , "xen-devel-GuqFBffKawuEi8DpZVb4nw@public.gmane.org" , Stefano Stabellini , "kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Grant Likely , "kvmarm-FPEHb7Xf0XXUo1n7N8X6UoWGPAHP3yOg@public.gmane.org" , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" To: Alexander Graf Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: cross-distro-bounces-cunTk1MwBs8s++Sfvej+rw@public.gmane.org Sender: cross-distro-bounces-cunTk1MwBs8s++Sfvej+rw@public.gmane.org List-Id: kvm.vger.kernel.org --===============7845788444180984657== Content-Type: multipart/alternative; boundary=20cf302efa447c845e04f3778c60 --20cf302efa447c845e04f3778c60 Content-Type: text/plain; charset=ISO-8859-1 On 28 February 2014 02:05, Alexander Graf wrote: > > Am 28.02.2014 um 03:56 schrieb Arnd Bergmann > >> Replace Windows by "Linux with custom drivers" and you're in the same > >> situation even when you neglect Windows. Reality will be that we will > >> have fdt and acpi based systems. > > We will however want to boot all sorts of guests in a standardized > > virtual environment: > > * 32 bit Linux (since some distros don't support biarch or multiarch > > on arm64) for running applications that are either binary-only > > or not 64-bit safe. > > * 32-bit Android > > * big-endian Linux for running applications that are not endian-clean > > (typically network stuff ported from powerpc or mipseb. > > * OS/v guests > > * NOMMU Linux > > * BSD based OSs > > * QNX > > * random other RTOSs *snip* > You're forgetting a few pretty important cases here: > > * Enterprise grade Linux distribution that only supports ACPI > * Maybe WinRT if we can convince MS to use it > * Non-Linux with x86/ia64 heritage and thus ACPI support I think we need limit the scope of the spec a bit here. For a this VM system specification, we should describe what is simple to set up and high performance for KVM, Xen and mainline Linux. For everyone else, there is Qemu where we can mangle to provide whatever the guest OS might want. Re UEFI, Riku --20cf302efa447c845e04f3778c60 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
On 28 February 2014 02:05, Alexander Graf <agraf-l3A5Bk7waGM@public.gmane.org> wrote:
> > Am 28.02.201= 4 um 03:56 schrieb Arnd Bergmann <arnd@= arndb.de>
> >> Replace Windows by "Linux with custom drivers" and = you're in the same
> >> situation even when you neglect Win= dows. Reality will be that we will
> >> have fdt and acpi based= systems.

> > We will however want to boot all sorts of guests in a standar= dized
> > virtual environment:

> > * 32 bit Linux (si= nce some distros don't support biarch or multiarch
> > =A0on a= rm64) for running applications that are either binary-only
> > =A0or not 64-bit safe.
> > * 32-bit Android
> >= * big-endian Linux for running applications that are not endian-clean
&= gt; > =A0(typically network stuff ported from powerpc or mipseb.
>= > * OS/v guests
> > * NOMMU Linux
> > * BSD based OSs
> > * QNX
= > > * random other RTOSs

*snip*
=A0
> You're forg= etting a few pretty important cases here:
>
> * Enterprise grad= e Linux distribution that only supports ACPI
> * Maybe WinRT if we can convince MS to use it
> * Non-Linux with= x86/ia64 heritage and thus ACPI support

I think we need limit the s= cope of the spec a bit here.

For a this VM system specification, we= should describe what is simple to set up and high performance for KVM, Xen= and mainline Linux. For everyone else, there is Qemu where we can mangle t= o provide whatever the guest OS might want.

Re UEFI,=A0

Riku
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