Re: [Xen-devel] Kernel bug from 3.0 (was phy disks and vifs timing out in DomU)

[Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>]

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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