Linux 2.6.39-rc[12] doesn't boot at all on Alpha. As soon as the kernel
has loaded the system freezes.
Bisection gave the following as the first bad commit:
commit 091738a266fc74329ae186f22ff2b3f01319112d genirq: Remove real old
transition functions
If I reverse (as far as possible) the second half of the commit (the bit
that applies to kernel/irq/chip.c) from 2.6.39-rc2 then I get a kernel
that starts booting but freezes when it prints "Calibrating delay loop..."
Cheers
Michael.