On Fri, 5 Feb 2021 at 13:58, Steven Price <steven.price@xxxxxxx> wrote: > > The VMM may not wish to have it's own mapping of guest memory mapped > with PROT_MTE because this causes problems if the VMM has tag checking > enabled (the guest controls the tags in physical RAM and it's unlikely > the tags are correct for the VMM). > > Instead add a new ioctl which allows the VMM to easily read/write the > tags from guest memory, allowing the VMM's mapping to be non-PROT_MTE > while the VMM can still read/write the tags for the purpose of > migration. > > Signed-off-by: Steven Price <steven.price@xxxxxxx> > --- > arch/arm64/include/uapi/asm/kvm.h | 13 +++++++ > arch/arm64/kvm/arm.c | 57 +++++++++++++++++++++++++++++++ > include/uapi/linux/kvm.h | 1 + > 3 files changed, 71 insertions(+) Missing the update to the docs in Documentation/virtual/kvm/api.txt :-) thanks -- PMM _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
