From: Christoffer Dall <christoffer.dall@arm.com>
To: Marc Zyngier <maz@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
James Morse <james.morse@arm.com>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Will Deacon <will@kernel.org>,
Quentin Perret <qperret@google.com>,
Russell King <linux@arm.linux.org.uk>,
Vladimir Murzin <vladimir.murzin@arm.com>,
Anders Berg <anders.berg@lsi.com>, Arnd Bergmann <arnd@arndb.de>
Subject: Re: [RFC PATCH 0/5] Removing support for 32bit KVM/arm host
Date: Wed, 19 Feb 2020 15:56:24 +0100 [thread overview]
Message-ID: <20200219145624.GD26684@e113682-lin.lund.arm.com> (raw)
In-Reply-To: <20200210141324.21090-1-maz@kernel.org>
On Mon, Feb 10, 2020 at 02:13:19PM +0000, Marc Zyngier wrote:
> KVM/arm was merged just over 7 years ago, and has lived a very quiet
> life so far. It mostly works if you're prepared to deal with its
> limitations, it has been a good prototype for the arm64 version,
> but it suffers a few problems:
>
> - It is incomplete (no debug support, no PMU)
> - It hasn't followed any of the architectural evolutions
> - It has zero users (I don't count myself here)
> - It is more and more getting in the way of new arm64 developments
>
> So here it is: unless someone screams and shows that they rely on
> KVM/arm to be maintained upsteam, I'll remove 32bit host support
> form the tree. One of the reasons that makes me confident nobody is
> using it is that I never receive *any* bug report. Yes, it is perfect.
> But if you depend on KVM/arm being available in mainline, please shout.
>
> To reiterate: 32bit guest support for arm64 stays, of course. Only
> 32bit host goes. Once this is merged, I plan to move virt/kvm/arm to
> arm64, and cleanup all the now unnecessary abstractions.
>
> The patches have been generated with the -D option to avoid spamming
> everyone with huge diffs, and there is a kvm-arm/goodbye branch in
> my kernel.org repository.
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
WARNING: multiple messages have this Message-ID (diff)
From: Christoffer Dall <christoffer.dall@arm.com>
To: Marc Zyngier <maz@kernel.org>
Cc: Anders Berg <anders.berg@lsi.com>,
Russell King <linux@arm.linux.org.uk>,
Arnd Bergmann <arnd@arndb.de>,
kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Paolo Bonzini <pbonzini@redhat.com>,
Will Deacon <will@kernel.org>,
kvmarm@lists.cs.columbia.edu
Subject: Re: [RFC PATCH 0/5] Removing support for 32bit KVM/arm host
Date: Wed, 19 Feb 2020 15:56:24 +0100 [thread overview]
Message-ID: <20200219145624.GD26684@e113682-lin.lund.arm.com> (raw)
In-Reply-To: <20200210141324.21090-1-maz@kernel.org>
On Mon, Feb 10, 2020 at 02:13:19PM +0000, Marc Zyngier wrote:
> KVM/arm was merged just over 7 years ago, and has lived a very quiet
> life so far. It mostly works if you're prepared to deal with its
> limitations, it has been a good prototype for the arm64 version,
> but it suffers a few problems:
>
> - It is incomplete (no debug support, no PMU)
> - It hasn't followed any of the architectural evolutions
> - It has zero users (I don't count myself here)
> - It is more and more getting in the way of new arm64 developments
>
> So here it is: unless someone screams and shows that they rely on
> KVM/arm to be maintained upsteam, I'll remove 32bit host support
> form the tree. One of the reasons that makes me confident nobody is
> using it is that I never receive *any* bug report. Yes, it is perfect.
> But if you depend on KVM/arm being available in mainline, please shout.
>
> To reiterate: 32bit guest support for arm64 stays, of course. Only
> 32bit host goes. Once this is merged, I plan to move virt/kvm/arm to
> arm64, and cleanup all the now unnecessary abstractions.
>
> The patches have been generated with the -D option to avoid spamming
> everyone with huge diffs, and there is a kvm-arm/goodbye branch in
> my kernel.org repository.
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: Christoffer Dall <christoffer.dall@arm.com>
To: Marc Zyngier <maz@kernel.org>
Cc: Anders Berg <anders.berg@lsi.com>,
Vladimir Murzin <vladimir.murzin@arm.com>,
Russell King <linux@arm.linux.org.uk>,
Arnd Bergmann <arnd@arndb.de>,
kvm@vger.kernel.org, Suzuki K Poulose <suzuki.poulose@arm.com>,
Quentin Perret <qperret@google.com>,
James Morse <james.morse@arm.com>,
linux-arm-kernel@lists.infradead.org,
Paolo Bonzini <pbonzini@redhat.com>,
Will Deacon <will@kernel.org>,
kvmarm@lists.cs.columbia.edu,
Julien Thierry <julien.thierry.kdev@gmail.com>
Subject: Re: [RFC PATCH 0/5] Removing support for 32bit KVM/arm host
Date: Wed, 19 Feb 2020 15:56:24 +0100 [thread overview]
Message-ID: <20200219145624.GD26684@e113682-lin.lund.arm.com> (raw)
In-Reply-To: <20200210141324.21090-1-maz@kernel.org>
On Mon, Feb 10, 2020 at 02:13:19PM +0000, Marc Zyngier wrote:
> KVM/arm was merged just over 7 years ago, and has lived a very quiet
> life so far. It mostly works if you're prepared to deal with its
> limitations, it has been a good prototype for the arm64 version,
> but it suffers a few problems:
>
> - It is incomplete (no debug support, no PMU)
> - It hasn't followed any of the architectural evolutions
> - It has zero users (I don't count myself here)
> - It is more and more getting in the way of new arm64 developments
>
> So here it is: unless someone screams and shows that they rely on
> KVM/arm to be maintained upsteam, I'll remove 32bit host support
> form the tree. One of the reasons that makes me confident nobody is
> using it is that I never receive *any* bug report. Yes, it is perfect.
> But if you depend on KVM/arm being available in mainline, please shout.
>
> To reiterate: 32bit guest support for arm64 stays, of course. Only
> 32bit host goes. Once this is merged, I plan to move virt/kvm/arm to
> arm64, and cleanup all the now unnecessary abstractions.
>
> The patches have been generated with the -D option to avoid spamming
> everyone with huge diffs, and there is a kvm-arm/goodbye branch in
> my kernel.org repository.
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-02-19 14:56 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200210141344eucas1p25a6da0b0251931ef3659397a6f34c0c3@eucas1p2.samsung.com>
2020-02-10 14:13 ` [RFC PATCH 0/5] Removing support for 32bit KVM/arm host Marc Zyngier
2020-02-10 14:13 ` Marc Zyngier
2020-02-10 14:13 ` Marc Zyngier
2020-02-10 14:13 ` [RFC PATCH 1/5] arm: Unplug KVM from the build system Marc Zyngier
2020-02-10 14:13 ` Marc Zyngier
2020-02-10 14:13 ` Marc Zyngier
2020-02-10 14:13 ` [RFC PATCH 2/5] arm: Remove KVM from config files Marc Zyngier
2020-02-10 14:13 ` Marc Zyngier
2020-02-10 14:13 ` Marc Zyngier
2020-02-10 14:13 ` [RFC PATCH 3/5] arm: Remove 32bit KVM host support Marc Zyngier
2020-02-10 14:13 ` Marc Zyngier
2020-02-10 14:13 ` Marc Zyngier
2020-02-10 14:13 ` [RFC PATCH 4/5] arm: Remove HYP/Stage-2 page-table support Marc Zyngier
2020-02-10 14:13 ` Marc Zyngier
2020-02-10 14:13 ` Marc Zyngier
2020-02-10 14:13 ` [RFC PATCH 5/5] arm: Remove GICv3 vgic compatibility macros Marc Zyngier
2020-02-10 14:13 ` Marc Zyngier
2020-02-10 14:13 ` Marc Zyngier
2020-02-10 15:21 ` [RFC PATCH 0/5] Removing support for 32bit KVM/arm host Olof Johansson
2020-02-10 15:21 ` Olof Johansson
2020-02-10 15:21 ` Olof Johansson
2020-02-10 15:54 ` Arnd Bergmann
2020-02-10 15:54 ` Arnd Bergmann
2020-02-10 15:54 ` Arnd Bergmann
2020-02-10 15:46 ` Will Deacon
2020-02-10 15:46 ` Will Deacon
2020-02-10 15:46 ` Will Deacon
2020-02-10 16:25 ` Russell King - ARM Linux admin
2020-02-10 16:25 ` Russell King - ARM Linux admin
2020-02-10 16:25 ` Russell King - ARM Linux admin
2020-02-10 16:26 ` Russell King - ARM Linux admin
2020-02-10 16:26 ` Russell King - ARM Linux admin
2020-02-10 16:26 ` Russell King - ARM Linux admin
2020-02-11 15:12 ` Vladimir Murzin
2020-02-11 15:12 ` Vladimir Murzin
2020-02-11 15:12 ` Vladimir Murzin
2020-02-11 15:23 ` Catalin Marinas
2020-02-11 15:23 ` Catalin Marinas
2020-02-11 15:23 ` Catalin Marinas
2020-02-17 0:14 ` Linus Walleij
2020-02-17 0:14 ` Linus Walleij
2020-02-17 0:14 ` Linus Walleij
2020-02-19 13:53 ` Stefan Agner
2020-02-19 13:53 ` Stefan Agner
2020-02-19 13:53 ` Stefan Agner
2020-02-20 11:01 ` Marc Zyngier
2020-02-20 11:01 ` Marc Zyngier
2020-02-20 11:01 ` Marc Zyngier
2020-02-19 14:56 ` Christoffer Dall [this message]
2020-02-19 14:56 ` Christoffer Dall
2020-02-19 14:56 ` Christoffer Dall
2020-02-19 15:09 ` Arnd Bergmann
2020-02-19 15:09 ` Arnd Bergmann
2020-02-19 15:09 ` Arnd Bergmann
2020-02-19 15:46 ` Jan Kiszka
2020-02-19 15:46 ` Jan Kiszka
2020-02-19 15:46 ` Jan Kiszka
2020-02-20 10:29 ` Marc Zyngier
2020-02-20 10:29 ` Marc Zyngier
2020-02-20 10:29 ` Marc Zyngier
2020-02-20 12:44 ` Marek Szyprowski
2020-02-20 12:44 ` Marek Szyprowski
2020-02-20 12:44 ` Marek Szyprowski
2020-02-20 13:15 ` Marc Zyngier
2020-02-20 13:15 ` Marc Zyngier
2020-02-20 13:15 ` Marc Zyngier
2020-02-20 13:17 ` Paolo Bonzini
2020-02-20 13:17 ` Paolo Bonzini
2020-02-20 13:17 ` Paolo Bonzini
2020-02-20 13:32 ` Robin Murphy
2020-02-20 13:32 ` Robin Murphy
2020-02-20 13:32 ` Robin Murphy
2020-02-20 14:01 ` Marc Zyngier
2020-02-20 14:01 ` Marc Zyngier
2020-02-20 14:01 ` Marc Zyngier
2020-02-20 14:38 ` Robin Murphy
2020-02-20 14:38 ` Robin Murphy
2020-02-20 14:38 ` Robin Murphy
2020-02-22 14:21 ` Takashi Yoshi
2020-02-22 14:21 ` Takashi Yoshi
2020-02-22 14:40 ` Takashi Yoshi
2020-02-22 14:40 ` Takashi Yoshi
2020-02-22 14:40 ` Takashi Yoshi
2020-02-22 21:31 ` Arnd Bergmann
2020-02-22 21:31 ` Arnd Bergmann
2020-02-22 21:31 ` Arnd Bergmann
2020-02-25 21:34 ` Takashi Yoshi
2020-02-25 21:34 ` Takashi Yoshi
2020-02-25 21:34 ` Takashi Yoshi
[not found] <mailman.29637.1581344013.2486.linux-arm-kernel@lists.infradead.org>
2020-02-18 21:37 ` Daniel Golle
2020-02-19 8:31 ` Marc Zyngier
[not found] ` <CGME20200220130838eucas1p12bc652ecd882204a8ffda5ed28f48bd5@eucas1p1.samsung.com>
2020-02-20 13:08 ` Bartlomiej Zolnierkiewicz
2020-02-20 13:39 ` Marc Zyngier
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