From: Avi Kivity <avi@redhat.com>
To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: blauwirbel@gmail.com, kvm@vger.kernel.org, gleb@redhat.com,
seabios@seabios.org, liu ping fan <qemulist@gmail.com>,
qemu-devel@nongnu.org,
Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com>,
kevin@koconnor.net, kraxel@redhat.com, anthony@codemonkey.ws,
imammedo@redhat.com, Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [RFC PATCH v3 05/19] Implement dimm device abstraction
Date: Wed, 31 Oct 2012 14:34:02 +0200 [thread overview]
Message-ID: <50911ABA.4050003@redhat.com> (raw)
In-Reply-To: <CAJSP0QULwAE=tis-1fhW1yDCGiVK_F8pMij6eRPs4r4XTCWzhg@mail.gmail.com>
On 10/31/2012 02:18 PM, Stefan Hajnoczi wrote:
>>
>> IMO we should use the same mechanism as proposed for other devices:
>> address_space_map() should grab a reference on the dimm device, and
>> address_space_unmap() can release it. This way device destruction will
>> be deferred as soon as all devices complete I/O.
>>
>> We will have to be careful with network receive buffers though, since
>> they can be held indefinitely.
>
> Network receive buffers aren't mapped. Net receive is not zero-copy.
> For example, virtio-net does virtqueue_pop() inside
> virtio_net_receive().
>
> I don't see a problem with networking.
What about vhost-net? But that is managed separately with a MemoryListener.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-10-31 12:34 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-21 11:17 [RFC PATCH v3 00/19] ACPI memory hotplug Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 01/19][SeaBIOS] Add ACPI_EXTRACT_DEVICE* macros Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 02/19][SeaBIOS] Add SSDT memory device support Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 03/19][SeaBIOS] acpi-dsdt: Implement functions for memory hotplug Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 04/19][SeaBIOS] acpi: generate hotplug memory devices Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 05/19] Implement dimm device abstraction Vasilis Liaskovitis
2012-09-24 6:02 ` Wen Congyang
2012-10-23 12:25 ` [Qemu-devel] " Stefan Hajnoczi
2012-10-24 8:06 ` liu ping fan
2012-10-24 10:15 ` Stefan Hajnoczi
2012-10-24 17:16 ` Vasilis Liaskovitis
2012-10-25 8:00 ` liu ping fan
2012-10-31 11:15 ` Avi Kivity
2012-10-31 12:18 ` [Qemu-devel] " Stefan Hajnoczi
2012-10-31 12:34 ` Avi Kivity [this message]
2012-10-31 12:34 ` Stefan Hajnoczi
2012-09-21 11:17 ` [RFC PATCH v3 06/19] Implement "-dimm" command line option Vasilis Liaskovitis
2012-09-22 13:46 ` Blue Swirl
2012-09-24 10:42 ` Vasilis Liaskovitis
2012-09-29 11:13 ` Blue Swirl
2012-10-09 17:04 ` Vasilis Liaskovitis
2012-10-13 8:57 ` Blue Swirl
2012-10-17 9:19 ` Vasilis Liaskovitis
2012-10-17 10:03 ` Avi Kivity
2012-10-18 9:27 ` Vasilis Liaskovitis
2012-10-18 12:33 ` Avi Kivity
2012-10-19 17:48 ` Blue Swirl
2012-10-22 10:55 ` Avi Kivity
2012-10-22 8:39 ` Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 07/19] acpi_piix4: Implement memory device hotplug registers Vasilis Liaskovitis
2012-09-22 13:49 ` Blue Swirl
2012-09-21 11:17 ` [RFC PATCH v3 08/19] pc: calculate dimm physical addresses and adjust memory map Vasilis Liaskovitis
2012-09-22 14:15 ` Blue Swirl
2012-09-24 15:27 ` Vasilis Liaskovitis
2012-09-29 11:27 ` Blue Swirl
2012-09-21 11:17 ` [RFC PATCH v3 09/19] pc: Add dimm paravirt SRAT info Vasilis Liaskovitis
2012-09-27 3:55 ` Wen Congyang
2012-09-21 11:17 ` [RFC PATCH v3 10/19] fix live-migration when "populated=on" is missing Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 11/19] Implement qmp and hmp commands for notification lists Vasilis Liaskovitis
2012-09-21 22:03 ` Eric Blake
2012-09-24 14:45 ` Vasilis Liaskovitis
2012-10-23 12:15 ` Stefan Hajnoczi
2012-09-21 11:17 ` [RFC PATCH v3 12/19] Implement "info memory-total" and "query-memory-total" Vasilis Liaskovitis
2012-09-21 22:36 ` Eric Blake
2012-09-21 11:17 ` [RFC PATCH v3 13/19] balloon: update with hotplugged memory Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 14/19][SeaBIOS] Add _OST dimm method Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 15/19] Add _OST dimm support Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 16/19] Update dimm state on reset Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 17/19][SeaBIOS] Implement _PS3 method for memory device Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 18/19] Implement _PS3 for dimm Vasilis Liaskovitis
2012-09-21 11:17 ` [RFC PATCH v3 19/19][SeaBIOS] Calculate pcimem_start and pcimem64_start from SRAT entries Vasilis Liaskovitis
2012-09-21 11:19 ` [RFC PATCH v3 19/19] alternative: Introduce paravirt interface QEMU_CFG_PCI_WINDOW Vasilis Liaskovitis
2012-09-21 11:20 ` [RFC PATCH v3 20/19][SeaBIOS] alternative: Use paravirt interface for pci windows Vasilis Liaskovitis
2012-09-24 6:35 ` Wen Congyang
2012-09-24 10:46 ` Vasilis Liaskovitis
2012-09-24 6:51 ` [RFC PATCH v3 19/19][SeaBIOS] Calculate pcimem_start and pcimem64_start from SRAT entries Wen Congyang
2012-09-22 14:17 ` [RFC PATCH v3 00/19] ACPI memory hotplug Blue Swirl
2012-10-31 10:58 ` Stefan Hajnoczi
2012-10-31 11:16 ` Avi Kivity
2012-11-01 9:01 ` Vasilis Liaskovitis
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