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From: Peter Maydell <peter.maydell@linaro.org>
To: Alexander Graf <agraf@suse.de>
Cc: QEMU Developers <qemu-devel@nongnu.org>,
	Paolo Bonzini <pbonzini@redhat.com>,
	kvm-devel <kvm@vger.kernel.org>, qemu-arm <qemu-arm@nongnu.org>
Subject: Re: [PATCH RFC v2 2/2] ARM: KVM: Enable in-kernel timers with user space gic
Date: Tue, 13 Dec 2016 13:20:50 +0000	[thread overview]
Message-ID: <CAFEAcA9yW+pOcdE6d6-FUxtVZtEcEXZyEkjwACZa89CbnJ9Y8w@mail.gmail.com> (raw)
In-Reply-To: <1479133935-63848-3-git-send-email-agraf@suse.de>

On 14 November 2016 at 14:32, Alexander Graf <agraf@suse.de> wrote:
> When running with KVM enabled, you can choose between emulating the
> gic in kernel or user space. If the kernel supports in-kernel virtualization
> of the interrupt controller, it will default to that. If not, if will
> default to user space emulation.
>
> Unfortunately when running in user mode gic emulation, we miss out on
> timer events which are only available from kernel space. This patch leverages
> the new kernel/user space pending line synchronization for those timer events.
>
> Signed-off-by: Alexander Graf <agraf@suse.de>

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM

WARNING: multiple messages have this Message-ID (diff)
From: Peter Maydell <peter.maydell@linaro.org>
To: Alexander Graf <agraf@suse.de>
Cc: QEMU Developers <qemu-devel@nongnu.org>,
	Paolo Bonzini <pbonzini@redhat.com>,
	kvm-devel <kvm@vger.kernel.org>, qemu-arm <qemu-arm@nongnu.org>
Subject: Re: [Qemu-devel] [PATCH RFC v2 2/2] ARM: KVM: Enable in-kernel timers with user space gic
Date: Tue, 13 Dec 2016 13:20:50 +0000	[thread overview]
Message-ID: <CAFEAcA9yW+pOcdE6d6-FUxtVZtEcEXZyEkjwACZa89CbnJ9Y8w@mail.gmail.com> (raw)
In-Reply-To: <1479133935-63848-3-git-send-email-agraf@suse.de>

On 14 November 2016 at 14:32, Alexander Graf <agraf@suse.de> wrote:
> When running with KVM enabled, you can choose between emulating the
> gic in kernel or user space. If the kernel supports in-kernel virtualization
> of the interrupt controller, it will default to that. If not, if will
> default to user space emulation.
>
> Unfortunately when running in user mode gic emulation, we miss out on
> timer events which are only available from kernel space. This patch leverages
> the new kernel/user space pending line synchronization for those timer events.
>
> Signed-off-by: Alexander Graf <agraf@suse.de>

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM

  reply	other threads:[~2016-12-13 13:21 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-14 14:32 [PATCH RFC v2 0/2] Enable cp15 timers with user space gic & kvm Alexander Graf
2016-11-14 14:32 ` [Qemu-devel] " Alexander Graf
2016-11-14 14:32 ` [PATCH RFC v2 1/2] linux-headers: update Alexander Graf
2016-11-14 14:32   ` [Qemu-devel] " Alexander Graf
2016-11-14 14:32 ` [PATCH RFC v2 2/2] ARM: KVM: Enable in-kernel timers with user space gic Alexander Graf
2016-11-14 14:32   ` [Qemu-devel] " Alexander Graf
2016-12-13 13:20   ` Peter Maydell [this message]
2016-12-13 13:20     ` Peter Maydell
2017-06-26 15:03     ` Andrew Jones
2017-06-26 21:32       ` Alexander Graf
2017-06-27 12:40         ` Andrew Jones

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