A couple of patches I've applied for v4.4 relating to 4KB stack support with SMP. Basically 4KB stacks never quite worked with SMP since the IRQ stack was never set up on secondary threads. This causes boot failure if enabled accidentally.
The first patch sets up and tears down the IRQ stack state, and the second is just a small clean up to avoid bit rot. James Hogan (2): metag: SMP: Fix 4KiB stack setup on secondary CPUs metag: Turn irq_ctx_* macros into static inlines arch/metag/include/asm/irq.h | 8 ++++++-- arch/metag/kernel/smp.c | 2 ++ 2 files changed, 8 insertions(+), 2 deletions(-) Cc: email@example.com -- 2.4.10 -- To unsubscribe from this list: send the line "unsubscribe linux-metag" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html