On Wed, 2018-09-26 at 17:47 +0100, George Dunlap wrote: > From: Isaila Alexandru <aisa...@bitdefender.com> > > This patch adds access control for NPT mode. > > There aren’t enough extra bits to store the access rights in the NPT > p2m > table, so we add a radix tree to store extra information. > > For efficiency: > - Only allocate this radix tree when we first store "non-default" > extra information > > - Remove entires which match the default extra information rather > than continuing to store them > > - For superpages, only store an entry for the first gfn in the > superpage. Use the order of the p2m entry being read to determine > the proper place to look in the radix table. > > Modify p2m_type_to_flags() to accept and interpret an access value, > parallel to the ept code. > > Add a set_default_access() method to the p2m-pt and p2m-ept versions > of the p2m rather than setting it directly, to deal with different > default permitted access values. > > Signed-off-by: Alexandru Isaila <aisa...@bitdefender.com> > Signed-off-by: George Dunlap <george.dun...@citrix.com> > --- > NB, this is compile-tested only.
I've tested this with xen-access and it works as expected > > diff --git a/xen/arch/x86/monitor.c b/xen/arch/x86/monitor.c > index 3c42e21906..2e6b1e75e4 100644 > --- a/xen/arch/x86/monitor.c > +++ b/xen/arch/x86/monitor.c > @@ -20,6 +20,7 @@ > */ > > #include <asm/monitor.h> > +#include <asm/p2m.h> Is this intended? Regards, Alex _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
