Gilles Chanteperdrix wrote: > Jan Kiszka wrote: > > This patch addresses two issues: > > > > - fixes boot hang with CONFIG_IPIPE_TRACE, !CONFIG_IPIPE_TRACE_VMALLOC, > > and large CONFIG_NR_CPUS (due to the huge trace buffers this implies, > > even if the system has only a few CPUs in fact) > > This is something I observed even on UP systems: the kernel does not > boot on ARM if CONFIG_IPIPE_TRACE_VMALLOC is not selected. >
Yeah, well known, that's why we have vmalloc'ed trace buffers.
I just wondered again if this is an arch-specific issue, or if it
depends on the RAM size. If it is arch-specific, you are welcome to
change the default of IPIPE_TRACE_VMALLOC ("default y if ARM || ...").
Or reduce IPIPE_TRACE_SHIFT for ARM, given there is a reasonable value
(/wrt to the tracer) your boards still boot with.
Jan
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