tree e97ff62734f68bb9ef08d3ab9168e3265949d3b6
parent 8d9877253b3c442868eb21bb4fd98cf177192993
author Andre Przywara <andre.przywara@arm.com> 1587663523 +0100
committer Will Deacon <will@kernel.org> 1587747601 +0100

memslot: Add support for READONLY mappings

A KVM memslot has a flags field, which allows to mark a region as
read-only.
Add another memory type bit to allow kvmtool-internal users to map a
write-protected region. Write access would trap and can be handled by
the MMIO emulation, which should register on the same guest address
region.

Tested-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>