On Thu, Nov 1, 2018 at 3:59 AM James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote: > > On Tue, 2018-10-16 at 11:52 +0200, Laurent Vivier wrote: > > Hi, > > > > Any comment on this last version? > > > > Any chance to be merged? > > I've got a use case for this: I went to one of the Graphene talks in > Edinburgh and it struck me that we seem to keep reinventing the type of > sandboxing that qemu-user already does. However if you want to do an > x86 on x86 sandbox, you can't currently use the binfmt_misc mechanism > because that has you running *every* binary on the system emulated. > Doing it per user namespace fixes this problem and allows us to at > least cut down on all the pointless duplication. Waaaaaait. What? qemu-user does not do "sandboxing". qemu-user makes your code slower and *LESS* secure. As far as I know, qemu-user is only intended for purposes like development and testing.