On 11.02.2025 12:02, Roger Pau Monne wrote: > Add a new hook to inhibit interrupt generation by the IOMMU(s). Note the > hook is currently only implemented for x86 IOMMUs. The purpose is to > disable interrupt generation at shutdown so any kexec chained image finds > the IOMMU(s) in a quiesced state. > > It would also prevent "Receive accept error" being raised as a result of > non-disabled interrupts targeting offline CPUs. > > Note that the iommu_quiesce() call in nmi_shootdown_cpus() is still > required even when there's a preceding iommu_crash_shutdown() call; the > later can become a no-op depending on the setting of the "crash-disable" > command line option. > > Signed-off-by: Roger Pau Monné <roger....@citrix.com> > --- > Changes since v1: > - New in this version. > - Expand commit message. > - Check if the hook is implemented before attempting to call it.
The latter two are changes since v2, though, aiui. In any event Reviewed-by: Jan Beulich <jbeul...@suse.com> Jan
