Hi all, To adapt the CSS I/O tests to protected virtualisation we need utilities to: 1- allocate the I/O buffers in a private page using (patch 2) It must be in a dedicated page to avoid exporting code or guest private data to the host. We accept a size in byte and flags and allocate page integral memory to handle the Protected Virtualization. 2- share the I/O buffers with the host (patch 1) This patch uses the page allocator reworked by Claudio. The 2 first patches are the implementation of the tools, patch 3 is the modification of the css.c test for PV. The checkpatch always asked me to modify MAINTAINERS, so I added me as reviewer to be in copy for CSS at least. May be we could create a finer grain MAINTAINERS in the future. regards, Pierre Pierre Morel (3): s390x: pv: implement routine to share/unshare memory s390x: define UV compatible I/O allocation s390x: css: pv: css test adaptation for PV lib/s390x/asm/uv.h | 39 ++++++++++++++++++++++++ lib/s390x/css.h | 3 +- lib/s390x/css_lib.c | 28 +++++------------ lib/s390x/malloc_io.c | 71 +++++++++++++++++++++++++++++++++++++++++++ lib/s390x/malloc_io.h | 45 +++++++++++++++++++++++++++ s390x/Makefile | 1 + s390x/css.c | 43 ++++++++++++++++++-------- 7 files changed, 196 insertions(+), 34 deletions(-) create mode 100644 lib/s390x/malloc_io.c create mode 100644 lib/s390x/malloc_io.h -- 2.17.1 changelog: from v4: - better SPDX license (Thomast, Janosch) - use get_order instead of a false calculation (Thomas) - rename functions malloc_io_pages to malloc_io_mem (Thomas) - Explicit error sentence for share errors (Janosch) - use UVC_RC_EXECUTED instead of bare hexa in share (Janosch) - removed MAINTAINERS changes, will be in another patch if ever (Janosch, Thomas) from v3: - add failure report to the new allocations in css.c (Thomas) - rework alloc_io_page and free_io_page (Thomas, Claudio) - add SPDX licenses (Thomas) - add comment for the functions declaration. - add me as reviewer for the CSS from v2: - use the page allocator reworked by Claudio from v1: - add the kvm-unit-test header - correct checks for errors on Set/Remove Shared Access - Add report for uv Set/Remove Shared Access - zero the allocated I/O page before use - free the page on error.
