On Fri, 2015-10-09 at 11:40 +0100, Julien Grall wrote: > On 09/10/15 10:22, Ian Campbell wrote: > > On Thu, 2015-10-08 at 20:22 +0100, Julien Grall wrote: > > > When restoring the system register state for an AArch32 guest at EL2, > > > writes to DACR32_EL2 may not be correctly synchronised by Cortex-A57, > > > which can lead to the guest effectively running into unexpected > > > domain > > > faults. > > > > > > Thankfully, we don't hit this erratum in Xen. Nonetheless, document > > > the > > > code to prevent any introduction of the erratum if the context switch > > > code is re-ordered. > > > > > > Link: > > > http://lists.xen.org/archives/html/xen-devel/2015-09/msg01746.html > > > Signed-off-by: Julien Grall <julien.gr...@citrix.com> > > > > Acked-by: Ian Campbell <ian.campb...@citrix.com> > > > > nits: > > > > > > + /* > > > + * This write to sysreg CONTEXTIDR_EL1 ensure we don't hit the > > > erratum > > > > "ensures" and s/the //. > > > > (fixable on commit) > > I'm fine if you fix it while committing.
Done. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
