[kvm-unit-tests PATCH v6 00/14] arm64: EL2 support

[Joey Gouly]

Hi all,

This series is for adding support to running the kvm-unit-tests at EL2.

Changes since v5[1]:
	- make debug bp/wp skip on EL2
	- fix microbench test
	- add to CI
	- applied the fixup's Drew talked about in v5

About this failure in micro-bench:

	- micro-bench hits the assert in gicv3_lpi_alloc_tables()
		lib/arm/gic-v3.c:183: assert failed: gicv3_data.redist_base[cpu]: Redistributor for cpu0 not initialized. Did cpu0 enable the GIC?	

in micro-bench.c lpi_prep() looks like this:

	static bool lpi_prep(void)
	{
	        struct its_collection *col1;
	        struct its_device *dev2;
	        if (!gicv3_its_base())
	                return false;

QEMU by default runs with gic-v2, so gicv3_its_base() should have returned
false and the lpi tests skipped. However because of the overflow mentioned in
the first commit (new to v6), the its_data.base was being overwritten to a
non-zero value.  This meant the test tried to do gic-v3 things on a gic-v2.

Thanks,
Joey

[1] https://lore.kernel.org/kvmarm/20260114115703.926685-1-joey.gouly@arm.com/


Alexandru Elisei (2):
  arm64: micro-bench: use smc when at EL2
  arm64: selftest: update test for running at EL2

Joey Gouly (12):
  arm64: fix overflow in gic-v2 initialisation
  arm64: set SCTLR_EL1 to a known value for secondary cores
  arm64: drop to EL1 if booted at EL2
  arm64: efi: initialise SCTLR_ELx fully
  arm64: efi: initialise the EL
  arm64: timer: use hypervisor timers when at EL2
  arm64: micro-bench: fix timer IRQ
  arm64: pmu: count EL2 cycles
  arm64: run at EL2 if supported
  arm64: add EL2 environment variable
  arm64: debug: skip tests at EL2
  arm64: gitlab-ci: add EL2 tests to CI

 .gitlab-ci.yml             | 30 +++++++++++++++++
 arm/cstart64.S             | 66 ++++++++++++++++++++++++++++++++++++--
 arm/debug.c                | 10 ++++++
 arm/efi/crt0-efi-aarch64.S |  5 +++
 arm/micro-bench.c          | 26 +++++++++++++--
 arm/pmu.c                  | 13 +++++---
 arm/run                    |  9 ++++++
 arm/selftest.c             | 23 ++++++++++---
 arm/timer.c                | 12 +++++--
 lib/acpi.h                 |  2 ++
 lib/arm/asm/setup.h        |  8 +++++
 lib/arm/asm/timer.h        | 11 +++++++
 lib/arm/gic.c              | 17 ++++++----
 lib/arm/setup.c            |  4 +++
 lib/arm/timer.c            | 19 +++++++++--
 lib/arm64/asm/sysreg.h     | 19 +++++++++++
 lib/arm64/processor.c      | 14 ++++++++
 scripts/arch-run.bash      |  5 +++
 18 files changed, 266 insertions(+), 27 deletions(-)

-- 
2.25.1