On Tue, Mar 02, 2021 at 02:59:40PM +0000, Quentin Perret wrote: > With nVHE, the host currently creates all stage 1 hypervisor mappings at > EL1 during boot, installs them at EL2, and extends them as required > (e.g. when creating a new VM). But in a world where the host is no > longer trusted, it cannot have full control over the code mapped in the > hypervisor. > > In preparation for enabling the hypervisor to create its own stage 1 > mappings during boot, introduce an early page allocator, with minimal > functionality. This allocator is designed to be used only during early > bootstrap of the hyp code when memory protection is enabled, which will > then switch to using a full-fledged page allocator after init. > > Signed-off-by: Quentin Perret <qperret@xxxxxxxxxx> > --- > arch/arm64/kvm/hyp/include/nvhe/early_alloc.h | 14 +++++ > arch/arm64/kvm/hyp/include/nvhe/memory.h | 24 +++++++++ > arch/arm64/kvm/hyp/nvhe/Makefile | 2 +- > arch/arm64/kvm/hyp/nvhe/early_alloc.c | 54 +++++++++++++++++++ > arch/arm64/kvm/hyp/nvhe/psci-relay.c | 4 +- > 5 files changed, 94 insertions(+), 4 deletions(-) > create mode 100644 arch/arm64/kvm/hyp/include/nvhe/early_alloc.h > create mode 100644 arch/arm64/kvm/hyp/include/nvhe/memory.h > create mode 100644 arch/arm64/kvm/hyp/nvhe/early_alloc.c Acked-by: Will Deacon <will@xxxxxxxxxx> Will _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
