On Tue, Mar 02, 2021 at 02:59:37PM +0000, Quentin Perret wrote: > Currently, the hyp code cannot make full use of a bss, as the kernel > section is mapped read-only. > > While this mapping could simply be changed to read-write, it would > intermingle even more the hyp and kernel state than they currently are. > Instead, introduce a __hyp_bss section, that uses reserved pages, and > create the appropriate RW hyp mappings during KVM init. > > Signed-off-by: Quentin Perret <qperret@xxxxxxxxxx> > --- > arch/arm64/include/asm/sections.h | 1 + > arch/arm64/kernel/vmlinux.lds.S | 52 ++++++++++++++++++++----------- > arch/arm64/kvm/arm.c | 14 ++++++++- > arch/arm64/kvm/hyp/nvhe/hyp.lds.S | 1 + > 4 files changed, 49 insertions(+), 19 deletions(-) Acked-by: Will Deacon <will@xxxxxxxxxx> Will _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
