Re: [Xen-devel] [PATCH v6 7/8] xen/arm: don't iomem_permit_access for reserved-memory regions

2019-08-16 Thread Stefano Stabellini
On Fri, 16 Aug 2019, Julien Grall wrote: > On 16/08/2019 00:36, Stefano Stabellini wrote: > > Don't allow reserved-memory regions to be remapped into any unprivileged > > guests, until reserved-memory regions are properly supported in Xen. For > > now, do not call iomem_permit_access on them,

Re: [Xen-devel] [PATCH v6 7/8] xen/arm: don't iomem_permit_access for reserved-memory regions

2019-08-16 Thread Julien Grall
Hi, On 16/08/2019 00:36, Stefano Stabellini wrote: Don't allow reserved-memory regions to be remapped into any unprivileged guests, until reserved-memory regions are properly supported in Xen. For now, do not call iomem_permit_access on them, because giving iomem_permit_access to dom0 means

[Xen-devel] [PATCH v6 7/8] xen/arm: don't iomem_permit_access for reserved-memory regions

2019-08-15 Thread Stefano Stabellini
Don't allow reserved-memory regions to be remapped into any unprivileged guests, until reserved-memory regions are properly supported in Xen. For now, do not call iomem_permit_access on them, because giving iomem_permit_access to dom0 means that the toolstack will be able to assign the region to a