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xen-devel
Re: [Xen-devel] Kernel bug from 3.0 (was phy disks and vifs timing out i
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To: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
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Subject: |
Re: [Xen-devel] Kernel bug from 3.0 (was phy disks and vifs timing out in DomU) |
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From: |
Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx> |
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Date: |
Thu, 1 Sep 2011 20:19:37 +0100 |
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Cc: |
"xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Anthony Wright <anthony@xxxxxxxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, David Vrabel <david.vrabel@xxxxxxxxxx>, Todd, Deshane <todd.deshane@xxxxxxx> |
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Thu, 01 Sep 2011 12:20:43 -0700 |
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Citrix Systems, Inc. |
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<4E4E3957.1040007@xxxxxxxxxxxxxxx> <20110819125615.GA26558@xxxxxxxxxxxx> <4E56B132.9050708@xxxxxxxxxxxxxxx> <20110826142606.GA25511@xxxxxxxxxxxx> <20110826144438.GA24836@xxxxxxxxxxxx> <4E5E6843.7050206@xxxxxxxxxx> <20110831170711.GB13642@xxxxxxxxxxxx> <1314862972.28989.74.camel@xxxxxxxxxxxxxxxxxxxxxx> <20110901142356.GD23971@xxxxxxxxxxxx> <1314889953.28989.130.camel@xxxxxxxxxxxxxxxxxxxxxx> <20110901153823.GC7506@xxxxxxxxxxxx> <1314891894.28989.135.camel@xxxxxxxxxxxxxxxxxxxxxx> <4E5FC20A.2080009@xxxxxxxx> |
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On Thu, 2011-09-01 at 18:34 +0100, Jeremy Fitzhardinge wrote:
> On 09/01/2011 08:44 AM, Ian Campbell wrote:
> >
> > blkback, xenbus_client and the grant table stuff all use it as well and
> > AFAICT have the same requirement for syncing.
> >
> > $ git grep alloc_vm_area
> > arch/x86/include/asm/xen/grant_table.h:#define xen_alloc_vm_area(size)
> > alloc_vm_area(size)
> >
> > -- this macro is unused...
> >
> > arch/x86/xen/grant-table.c: xen_alloc_vm_area(PAGE_SIZE
> > * max_nr_gframes);
> > drivers/block/xen-blkback/xenbus.c: blkif->blk_ring_area =
> > alloc_vm_area(PAGE_SIZE);
> > drivers/net/xen-netback/netback.c: vif->tx_comms_area =
> > alloc_vm_area(PAGE_SIZE);
> > drivers/net/xen-netback/netback.c: vif->rx_comms_area =
> > alloc_vm_area(PAGE_SIZE);
> > drivers/xen/xenbus/xenbus_client.c: area = xen_alloc_vm_area(PAGE_SIZE);
>
> Well, 3/5ths unused.
Hmm, yes, no sure how I missed that.
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