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) Ian. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
