From: Anthony Liguori <anthony@codemonkey.ws>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
qemu-devel <qemu-devel@nongnu.org>,
Blue Swirl <blauwirbel@gmail.com>, Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH v5 07/16] apic: Open-code timer save/restore
Date: Mon, 19 Dec 2011 16:21:47 -0600 [thread overview]
Message-ID: <4EEFB8FB.3030105@codemonkey.ws> (raw)
In-Reply-To: <61e59db37279bb3834b996c84e9a0523638f5e35.1323952403.git.jan.kiszka@siemens.com>
On 12/15/2011 06:33 AM, Jan Kiszka wrote:
> To enable migration between accelerated and non-accelerated APIC models,
> we will need to handle the timer saving and restoring specially and can
> no longer rely on the automatics of VMSTATE_TIMER. Specifically,
> accelerated model will not start any QEMUTimer.
>
> This patch therefore factors out the generic bits into apic_next_timer
> and introduces a post-load callback that can be implemented differently
> by both models.
>
> Signed-off-by: Jan Kiszka<jan.kiszka@siemens.com>
So you basically want the timer to be a dummy field for the in-kernel apic?
Can you fix this up in a pre-save routine (put QEMUTimer into a state where
there isn't an event pending)?
Regards,
Anthony Liguori
WARNING: multiple messages have this Message-ID (diff)
From: Anthony Liguori <anthony@codemonkey.ws>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
qemu-devel <qemu-devel@nongnu.org>,
Blue Swirl <blauwirbel@gmail.com>, Avi Kivity <avi@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v5 07/16] apic: Open-code timer save/restore
Date: Mon, 19 Dec 2011 16:21:47 -0600 [thread overview]
Message-ID: <4EEFB8FB.3030105@codemonkey.ws> (raw)
In-Reply-To: <61e59db37279bb3834b996c84e9a0523638f5e35.1323952403.git.jan.kiszka@siemens.com>
On 12/15/2011 06:33 AM, Jan Kiszka wrote:
> To enable migration between accelerated and non-accelerated APIC models,
> we will need to handle the timer saving and restoring specially and can
> no longer rely on the automatics of VMSTATE_TIMER. Specifically,
> accelerated model will not start any QEMUTimer.
>
> This patch therefore factors out the generic bits into apic_next_timer
> and introduces a post-load callback that can be implemented differently
> by both models.
>
> Signed-off-by: Jan Kiszka<jan.kiszka@siemens.com>
So you basically want the timer to be a dummy field for the in-kernel apic?
Can you fix this up in a pre-save routine (put QEMUTimer into a state where
there isn't an event pending)?
Regards,
Anthony Liguori
next prev parent reply other threads:[~2011-12-19 22:21 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-15 12:33 [PATCH v5 00/16] uq/master: Introduce basic irqchip support Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 01/16] msi: Generalize msix_supported to msi_supported Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 02/16] kvm: Move kvmclock into hw/kvm folder Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 03/16] apic: Stop timer on reset Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 04/16] apic: Inject external NMI events via LINT1 Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 05/16] apic: Introduce apic_report_irq_delivered Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 06/16] apic: Introduce backend/frontend infrastructure for KVM reuse Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-19 22:14 ` Anthony Liguori
2011-12-19 22:14 ` Anthony Liguori
2011-12-19 23:32 ` Jan Kiszka
2011-12-19 23:32 ` Jan Kiszka
2011-12-20 0:28 ` Anthony Liguori
2011-12-20 0:32 ` Jan Kiszka
2011-12-20 0:38 ` Anthony Liguori
2011-12-20 9:56 ` Avi Kivity
2011-12-20 9:56 ` Avi Kivity
2011-12-20 13:41 ` Anthony Liguori
2011-12-20 13:51 ` Paolo Bonzini
2011-12-20 13:51 ` Paolo Bonzini
2011-12-20 13:54 ` Anthony Liguori
2011-12-20 13:57 ` Paolo Bonzini
2011-12-20 14:07 ` Anthony Liguori
2011-12-20 17:02 ` Jan Kiszka
2011-12-20 17:02 ` Jan Kiszka
2011-12-20 19:14 ` Anthony Liguori
2011-12-20 21:23 ` Jan Kiszka
2011-12-20 21:38 ` Anthony Liguori
2011-12-20 21:45 ` Jan Kiszka
2011-12-20 21:55 ` Anthony Liguori
2011-12-20 22:20 ` Jan Kiszka
2011-12-20 22:20 ` [Qemu-devel] " Jan Kiszka
2011-12-20 23:41 ` Anthony Liguori
2011-12-20 23:45 ` Jan Kiszka
2011-12-20 14:07 ` Avi Kivity
2011-12-20 14:07 ` Avi Kivity
2011-12-15 12:33 ` [PATCH v5 07/16] apic: Open-code timer save/restore Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-19 22:21 ` Anthony Liguori [this message]
2011-12-19 22:21 ` Anthony Liguori
2011-12-19 23:45 ` Jan Kiszka
2011-12-19 23:45 ` [Qemu-devel] " Jan Kiszka
2011-12-20 0:31 ` Anthony Liguori
2011-12-20 0:34 ` Jan Kiszka
2011-12-20 0:34 ` [Qemu-devel] " Jan Kiszka
2011-12-20 0:53 ` Anthony Liguori
2011-12-20 0:53 ` [Qemu-devel] " Anthony Liguori
2011-12-20 1:24 ` Jan Kiszka
2011-12-20 1:24 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 08/16] i8259: Introduce backend/frontend infrastructure for KVM reuse Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 09/16] ioapic: " Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 10/16] memory: Introduce memory_region_init_reservation Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 11/16] kvm: Introduce core services for in-kernel irqchip support Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 12/16] kvm: x86: Establish IRQ0 override control Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 13/16] kvm: x86: Add user space part for in-kernel APIC Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 14/16] kvm: x86: Add user space part for in-kernel i8259 Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 15/16] kvm: x86: Add user space part for in-kernel IOAPIC Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-15 12:33 ` [PATCH v5 16/16] kvm: Arm in-kernel irqchip support Jan Kiszka
2011-12-15 12:33 ` [Qemu-devel] " Jan Kiszka
2011-12-19 21:17 ` [PATCH v5 00/16] uq/master: Introduce basic " Marcelo Tosatti
2011-12-19 21:17 ` [Qemu-devel] " Marcelo Tosatti
2011-12-19 22:24 ` Anthony Liguori
2011-12-19 22:24 ` Anthony Liguori
2011-12-19 23:49 ` Jan Kiszka
2011-12-19 23:49 ` [Qemu-devel] " Jan Kiszka
2011-12-20 0:32 ` Anthony Liguori
2011-12-20 0:37 ` Jan Kiszka
2011-12-20 0:42 ` Anthony Liguori
2011-12-20 0:42 ` [Qemu-devel] " Anthony Liguori
2011-12-20 10:01 ` Avi Kivity
2011-12-20 10:01 ` Avi Kivity
2011-12-20 1:08 ` Anthony Liguori
2011-12-20 1:19 ` Jan Kiszka
2011-12-20 1:19 ` [Qemu-devel] " Jan Kiszka
2011-12-20 1:28 ` Jan Kiszka
2011-12-20 1:28 ` [Qemu-devel] " Jan Kiszka
2011-12-20 2:46 ` Anthony Liguori
2011-12-20 3:10 ` Anthony Liguori
2011-12-20 8:34 ` Jan Kiszka
2011-12-20 8:34 ` [Qemu-devel] " Jan Kiszka
2011-12-20 10:03 ` Avi Kivity
2011-12-20 10:03 ` [Qemu-devel] " Avi Kivity
2011-12-20 10:08 ` Avi Kivity
2011-12-20 10:08 ` Avi Kivity
2011-12-20 13:45 ` Anthony Liguori
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