[PATCH 0/3] KVM/arm64: timer fixes for 6.14
Marc Zyngier
maz at kernel.org
Tue Jan 28 08:17:18 PST 2025
It's been recently pointed out that the NV timer code that is
(hopefully) on its way upstream is marginally sub-optimal (read:
terminally broken). This short series attempts to fix things:
- Correctly arm a background timer in all situations
- Avoid corrupting the EL2 state by shoving the EL1 state into it, and
simplify the handling of emulated timers
- Make the NV init of the timers less awkward and expensive
Thanks to Volodymyr Babchuk and Wei-Lin Chang for their help.
Patches on top of kvmarm-6.14, and merged back on top of my
kvm-arm64/nv-next branch.
Marc Zyngier (3):
KVM: arm64: timer: Always evaluate the need for a soft timer
KVM: arm64: timer: Correctly handle EL1 timer emulation when !FEAT_ECV
KVM: arm64: timer: Consolidate NV configuration of virtual timers
arch/arm64/kvm/arch_timer.c | 82 ++++++++++++++----------------------
arch/arm64/kvm/arm.c | 3 ++
include/kvm/arm_arch_timer.h | 1 +
3 files changed, 36 insertions(+), 50 deletions(-)
--
2.39.2
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