On Tue, Oct 17, 2017 at 01:56:18PM +0100, Wei Liu wrote: > On Tue, Oct 17, 2017 at 12:36:44PM +0100, Roger Pau Monne wrote: > > Currently there are many offenders of the unaligned access checks, > > which makes booting with the unaligned check a PVH Dom0 impossible. > > > > The main offenders seem to be the ACPI code, the VMX code and > > specially the intremap code (set_ire_sid). > > > > Signed-off-by: Roger Pau Monné <roger....@citrix.com> > > --- > > Cc: Andrew Cooper <andrew.coop...@citrix.com> > > Cc: George Dunlap <george.dun...@eu.citrix.com> > > Cc: Ian Jackson <ian.jack...@eu.citrix.com> > > Cc: Jan Beulich <jbeul...@suse.com> > > Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com> > > Cc: Stefano Stabellini <sstabell...@kernel.org> > > Cc: Tim Deegan <t...@xen.org> > > Cc: Wei Liu <wei.l...@citrix.com> > > Cc: Julien Grall <julien.gr...@arm.com> > > --- > > I'm not sure whether we prefer to fix the offenders, or just disable > > the alignment wholesale. In any case if we decide to disable the > > check, the patch should have vary low impact, and hence should be > > committed to 4.10 on the base that it only affects ubsan, which is not > > enabled by default and not to be used on production systems. > > I would very much like to fix the offenders but if the fixes turn out to > be cumbersome, so be it. > > What is wrong to leave this enabled? Each location is reported once, > right?
With clang it's reported every time it's hit AFAICT (certainly more than once). Roger. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
