[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] xen/arm: Allocate memory for dom0 from the bottom with the 1:1 Workaround
On Tue, 2013-10-22 at 12:26 +0100, Ian Campbell wrote: > On Tue, 2013-10-22 at 11:51 +0100, Julien Grall wrote: > > On Linux, the option CONFIG_ARM_PATCH_PHYS_VIRT (by default enabled) allows > > the Kernel to be loaded anywhere (or nearly) by patching the translation > > pv<->virt at boot time. > > > > The current solution in Linux assuming that the delta physical address - > > virtual address is always negative. A positive delta will destroy all the > > optimisation to modify only a part of the translation instruction (add/sub). > > > > By default, Xen is allocating memory from the top of memory and then > > goes down. To avoid booting issue with Linux, we must allocate memory > > from the bottom (ie starting from 0). > > > > Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx> > > Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx> Applied. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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