[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] xen-blkfront: set pages are FOREIGN_FRAME when sharing them
On Tue, 27 Mar 2012, Konrad Rzeszutek Wilk wrote: > On Tue, Mar 27, 2012 at 02:49:58PM +0100, Stefano Stabellini wrote: > > Set pages as FOREIGN_FRAME whenever blkfront shares them with another > > domain. Then when blkfront un-share them, also removes the > > FOREIGN_FRAME_BIT from the p2m. > > > > We do it so that when the source and the destination domain are the same > > (blkfront connected to blkback in the same domain) we can more easily > > recognize which ones are the source pfns and which ones are the > > destination pfns (both are going to be pointing to the same mfns). > > > > Without this patch enstablishing a connection between blkfront and QEMU > > qdisk in the same domain causes QEMU to hang and never return. > > Considering that it fixes a serious bug, it should be backported to > > previous releases. > > > ERROR: "set_phys_to_machine" [drivers/block/xen-blkfront.ko] undefined! I cannot reproduce this error: set_phys_to_machine is defined in arch/x86/include/asm/xen/page.h, that is included by include/xen/page.h, that is included by blkfront). What CS did you apply this patch to? What is your config? _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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