linux.git/tools/testing/selftests/kvm/include/aarch64, branch v6.11

Merge tag 'kvm-x86-selftests_utils-6.10' of https://github.com/kvm-x86/linux into HEAD

2024-05-12T07:18:11+00:00

KVM selftests treewide updates for 6.10:

 - Define _GNU_SOURCE for all selftests to fix a warning that was introduced by
   a change to kselftest_harness.h late in the 6.9 cycle, and because forcing
   every test to #define _GNU_SOURCE is painful.

 - Provide a global psuedo-RNG instance for all tests, so that library code can
   generate random, but determinstic numbers.

 - Use the global pRNG to randomly force emulation of select writes from guest
   code on x86, e.g. to help validate KVM's emulation of locked accesses.

 - Rename kvm_util_base.h back to kvm_util.h, as the weird layer of indirection
   was added purely to avoid manually #including ucall_common.h in a handful of
   locations.

 - Allocate and initialize x86's GDT, IDT, TSS, segments, and default exception
   handlers at VM creation, instead of forcing tests to manually trigger the
   related setup.

Revert "kvm: selftests: move base kvm_util.h declarations to kvm_util_base.h"

2024-04-29T19:54:13+00:00

Effectively revert the movement of code from kvm_util.h => kvm_util_base.h,
as the TL;DR of the justification for the move was to avoid #idefs and/or
circular dependencies between what ended up being ucall_common.h and what
was (and now again, is), kvm_util.h.

But avoiding #ifdef and circular includes is trivial: don't do that.  The
cost of removing kvm_util_base.h is a few extra includes of ucall_common.h,
but that cost is practically nothing.  On the other hand, having a "base"
version of a header that is really just the header itself is confusing,
and makes it weird/hard to choose names for headers that actually are
"base" headers, e.g. to hold core KVM selftests typedefs.

For all intents and purposes, this reverts commit
7d9a662ed9f0403e7b94940dceb81552b8edb931.

Reviewed-by: Ackerley Tng 
Link: https://lore.kernel.org/r/20240314232637.2538648-2-seanjc@google.com
Signed-off-by: Sean Christopherson

KVM: selftests: Use MPIDR_HWID_BITMASK from cputype.h

2024-04-25T12:19:56+00:00

No need for a home-rolled definition, just rely on the common header.

Signed-off-by: Oliver Upton 
Link: https://lore.kernel.org/r/20240422200158.2606761-19-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier

KVM: selftests: Add helper for enabling LPIs on a redistributor

2024-04-25T12:19:56+00:00

The selftests GIC library presently does not support LPIs. Add a
userspace helper for configuring a redistributor for LPIs, installing
an LPI configuration table and LPI pending table.

Signed-off-by: Oliver Upton 
Link: https://lore.kernel.org/r/20240422200158.2606761-18-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier

KVM: selftests: Add a minimal library for interacting with an ITS

2024-04-25T12:19:56+00:00

A prerequisite of testing LPI injection performance is of course
instantiating an ITS for the guest. Add a small library for creating an
ITS and interacting with it from the guest.

Signed-off-by: Oliver Upton 
Link: https://lore.kernel.org/r/20240422200158.2606761-17-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier

KVM: selftests: Add quadword MMIO accessors

2024-04-25T12:19:56+00:00

The base registers in the GIC ITS and redistributor for LPIs are 64 bits
wide. Add quadword accessors to poke at them.

Signed-off-by: Oliver Upton 
Link: https://lore.kernel.org/r/20240422200158.2606761-16-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier

KVM: selftests: Standardise layout of GIC frames

2024-04-25T12:19:56+00:00

It would appear that all of the selftests are using the same exact
layout for the GIC frames. Fold this back into the library
implementation to avoid defining magic values all over the selftests.

This is an extension of Colton's change, ripping out parameterization of
from the library internals in addition to the public interfaces.

Co-developed-by: Colton Lewis 
Signed-off-by: Colton Lewis 
Signed-off-by: Oliver Upton 
Link: https://lore.kernel.org/r/20240422200158.2606761-15-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier

KVM: selftests: Align with kernel's GIC definitions

2024-04-25T12:19:56+00:00

There are a few subtle incongruencies between the GIC definitions used
by the kernel and selftests. Furthermore, the selftests header blends
implementation detail (e.g. default priority) with the architectural
definitions.

This is all rather annoying, since bulk imports of the kernel header
is not possible. Move selftests-specific definitions out of the
offending header and realign tests on the canonical definitions for
things like sysregs. Finally, haul in a fresh copy of the gicv3 header
to enable a forthcoming ITS selftest.

Signed-off-by: Oliver Upton 
Link: https://lore.kernel.org/r/20240422200158.2606761-14-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier

Merge tag 'kvm-x86-selftests-6.9' of https://github.com/kvm-x86/linux into HEAD

2024-03-11T14:20:35+00:00

KVM selftests changes for 6.9:

 - Add macros to reduce the amount of boilerplate code needed to write "simple"
   selftests, and to utilize selftest TAP infrastructure, which is especially
   beneficial for KVM selftests with multiple testcases.

 - Add basic smoke tests for SEV and SEV-ES, along with a pile of library
   support for handling private/encrypted/protected memory.

 - Fix benign bugs where tests neglect to close() guest_memfd files.

KVM: riscv: selftests: Add guest helper to get vcpu id

2024-03-06T15:23:23+00:00

Add guest_get_vcpuid() helper to simplify accessing to per-cpu
private data. The sscratch CSR was used to store the vcpu id.

Signed-off-by: Haibo Xu 
Reviewed-by: Andrew Jones 
Signed-off-by: Anup Patel