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Re: [Qemu-devel] [PATCH 3/5] vring: use hostmem's RAM safe api
From: |
liu ping fan |
Subject: |
Re: [Qemu-devel] [PATCH 3/5] vring: use hostmem's RAM safe api |
Date: |
Fri, 12 Apr 2013 12:49:45 +0800 |
On Thu, Apr 11, 2013 at 6:15 PM, Stefan Hajnoczi <address@hidden> wrote:
> On Mon, Apr 01, 2013 at 04:20:32PM +0800, Liu Ping Fan wrote:
>> @@ -51,7 +50,7 @@ bool vring_setup(Vring *vring, VirtIODevice *vdev, int n)
>>
>> void vring_teardown(Vring *vring)
>> {
>> - hostmem_finalize(&vring->hostmem);
>> + memory_region_unref(vring->vring_mr);
>> }
>
> dataplane keeps a reference to the vring. This prevents memory hot
> unplug while the device is up. If this is a problem we'll have to
> reduce the lifespan of the vring mapping.
>
hot unplug is rare case, maybe we can ignore the delay of device's finalize.
> Stefan
- Re: [Qemu-devel] [PATCH 2/5] hostmem: make hostmem global and RAM hotunplg safe, (continued)
- Re: [Qemu-devel] [PATCH 2/5] hostmem: make hostmem global and RAM hotunplg safe, Stefan Hajnoczi, 2013/04/11
- Re: [Qemu-devel] [PATCH 2/5] hostmem: make hostmem global and RAM hotunplg safe, Paolo Bonzini, 2013/04/11
- Re: [Qemu-devel] [PATCH 2/5] hostmem: make hostmem global and RAM hotunplg safe, liu ping fan, 2013/04/11
- Re: [Qemu-devel] [PATCH 2/5] hostmem: make hostmem global and RAM hotunplg safe, Stefan Hajnoczi, 2013/04/12
- Re: [Qemu-devel] [PATCH 2/5] hostmem: make hostmem global and RAM hotunplg safe, Paolo Bonzini, 2013/04/12
- Re: [Qemu-devel] [PATCH 2/5] hostmem: make hostmem global and RAM hotunplg safe, liu ping fan, 2013/04/14
- Re: [Qemu-devel] [PATCH 2/5] hostmem: make hostmem global and RAM hotunplg safe, Paolo Bonzini, 2013/04/15
[Qemu-devel] [PATCH 3/5] vring: use hostmem's RAM safe api, Liu Ping Fan, 2013/04/01
[Qemu-devel] [PATCH 4/5] virtio-blk: release reference to RAM's memoryRegion, Liu Ping Fan, 2013/04/01
- Re: [Qemu-devel] [PATCH 4/5] virtio-blk: release reference to RAM's memoryRegion, li guang, 2013/04/02
- Re: [Qemu-devel] [PATCH 4/5] virtio-blk: release reference to RAM's memoryRegion, Stefan Hajnoczi, 2013/04/11
- Re: [Qemu-devel] [PATCH 4/5] virtio-blk: release reference to RAM's memoryRegion, liu ping fan, 2013/04/12
- Re: [Qemu-devel] [PATCH 4/5] virtio-blk: release reference to RAM's memoryRegion, Stefan Hajnoczi, 2013/04/12
- Re: [Qemu-devel] [PATCH 4/5] virtio-blk: release reference to RAM's memoryRegion, liu ping fan, 2013/04/12
- Re: [Qemu-devel] [PATCH 4/5] virtio-blk: release reference to RAM's memoryRegion, Stefan Hajnoczi, 2013/04/16
- Re: [Qemu-devel] [PATCH 4/5] virtio-blk: release reference to RAM's memoryRegion, Paolo Bonzini, 2013/04/16