[kvm-unit-tests PATCH 08/32] powerpc/sprs: Avoid taking PMU interrupts caused by register fuzzing

[Thomas Huth]

On 26/02/2024 11.11, Nicholas Piggin wrote:
> Storing certain values in MMCR0 can cause PMU interrupts when msleep
> enables MSR[EE], and this crashes the test. Freeze the PMU counters
> and clear any PMU exception before calling msleep.
> 
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
> ---
>   lib/powerpc/asm/reg.h |  4 ++++
>   powerpc/sprs.c        | 17 +++++++++++------
>   2 files changed, 15 insertions(+), 6 deletions(-)

Reviewed-by: Thomas Huth <thuth at redhat.com>