From: Petr Beneš <w1be...@gmail.com> This series introduces the ability to configure the maximum number of altp2m tables during domain creation. Previously, the limits were hardcoded to a maximum of 10. This change allows for greater flexibility in environments that require more or fewer altp2m views.
Adjustments include: - "Prepare" commits with style changes. - Adding a new `altp2m_count` parameter to xl. - Adding a new `altp2m_count` parameter to the OCaml bindings. - Adding a new `altp2m_count` parameter to the xl.cfg manual. - Adding a new `nr_altp2m` field into the `xen_domctl_createdomain`, which, after sanity checks, is stored in newly introduced `nr_altp2m` field of `struct domain` - leaving room for other architectures to implement the altp2m feature. - Replacing MAX_ALTP2M macro occurrences with `domain->nr_altp2m`. This enhancement is particularly relevant for users leveraging Xen's features for virtual machine introspection. Changes since v2: - Changed max_altp2m to nr_altp2m. - Moved arch-dependent check from xen/common/domain.c to xen/arch/x86/domain.c. - Replaced min(d->nr_altp2m, MAX_EPTP) occurences for just d->nr_altp2m. - Replaced array_index_nospec(altp2m_idx, ...) for just altp2m_idx. - Shortened long lines. - Removed unnecessary comments in altp2m_vcpu_initialise/destroy. - Moved nr_altp2m field after max_ fields in xen_domctl_createdomain. - Removed the commit that adjusted the initial allocation of pages from 256 to 1024. This means that after these patches, technically, the nr_altp2m will be capped to (256 - 1 + vcpus + MAX_NESTEDP2M) instead of MAX_EPTP (512). Future work will be needed to fix this. Petr Beneš (6): x86/p2m: Add braces for better code clarity tools/xl: Add altp2m_count parameter docs/man: Add altp2m_count parameter to the xl.cfg manual x86: Make the maximum number of altp2m views configurable tools/libxl: Activate the altp2m_count feature tools/ocaml: Add altp2m_count parameter docs/man/xl.cfg.5.pod.in | 14 +++++ tools/golang/xenlight/helpers.gen.go | 2 + tools/golang/xenlight/types.gen.go | 1 + tools/include/libxl.h | 8 +++ tools/libs/light/libxl_create.c | 10 ++++ tools/libs/light/libxl_types.idl | 1 + tools/ocaml/libs/xc/xenctrl.ml | 1 + tools/ocaml/libs/xc/xenctrl.mli | 1 + tools/ocaml/libs/xc/xenctrl_stubs.c | 11 ++-- tools/xl/xl_parse.c | 4 ++ xen/arch/x86/domain.c | 12 +++++ xen/arch/x86/hvm/hvm.c | 8 ++- xen/arch/x86/hvm/vmx/vmx.c | 2 +- xen/arch/x86/include/asm/domain.h | 7 ++- xen/arch/x86/include/asm/p2m.h | 4 +- xen/arch/x86/mm/altp2m.c | 23 +++++++- xen/arch/x86/mm/hap/hap.c | 6 +-- xen/arch/x86/mm/mem_access.c | 23 ++++---- xen/arch/x86/mm/mem_sharing.c | 2 +- xen/arch/x86/mm/p2m-ept.c | 10 ++-- xen/arch/x86/mm/p2m.c | 80 ++++++++++++++-------------- xen/common/domain.c | 1 + xen/include/public/domctl.h | 5 +- xen/include/xen/sched.h | 2 + 24 files changed, 161 insertions(+), 77 deletions(-) -- 2.34.1
