kernel/linux.git/tools/testing/selftests/kvm/include/aarch64, branch v6.12.80

KVM: arm64: selftests: Add arch_timer_edge_cases selftest

2024-08-30T08:04:16+00:00

Add a new arch_timer_edge_cases selftests that validates: * timers above the max TVAL value * timers in the past * moving counters ahead and behind pending timers * reprograming timers * timers fired multiple times * masking/unmasking using the timer control mask These are intentionally unusual scenarios to stress compliance with the arm architecture. Co-developed-by: Ricardo Koller Signed-off-by: Ricardo Koller Signed-off-by: Colton Lewis Link: https://lore.kernel.org/r/20240823175836.2798235-3-coltonlewis@google.com Signed-off-by: Marc Zyngier

KVM: arm64: selftests: Ensure pending interrupts are handled in arch_timer test

2024-08-30T08:03:45+00:00

Break up the asm instructions poking daifclr and daifset to handle interrupts. R_RBZYL specifies pending interrupts will be handle after context synchronization events such as an ISB. Introduce a function wrapper for the WFI instruction. Signed-off-by: Colton Lewis Link: https://lore.kernel.org/r/20240823175836.2798235-2-coltonlewis@google.com Signed-off-by: Marc Zyngier

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