[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] xen: workaround for 64-bit size/alignment bitops
On 28/04/14 09:47, Pranavkumar Sawargaonkar wrote: > On 27 April 2014 14:39, Vladimir Murzin <murzin.v@xxxxxxxxx> wrote: >> Xen assumes that bit operations are able to operate on 32-bit size and >> alignment. For arm64 bitops are based on atomic exclusive load/store >> instructions to guarantee that changes are made atomically. However, these >> instructions require that address to be aligned to the data size. Because, by >> default, bitops operates on 64-bit size it implies that address should be >> aligned appropriately. All these lead to breakage of Xen assumption for >> bitops >> properties. >> >> As a workaround address is aligned forcefully along with adjustment for bit >> position. >> [...] > > I have tried this patch on XGENE and works fine, I have managed to get > dom0 and domU working with it. > > Tested-by: Pranavkumar Sawargaonkar <pranavkumar@xxxxxxxxxx> Thanks. Are there arm64 platforms that support Xen currently available in 3.15? Or can this wait until 3.16? David _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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