Joel Stanley bd6ba3518f powerpc: Disable doorbells on Power8 DD1.x ... These processors do not currently support doorbell IPIs, so remove them from the feature list if we are at DD 1.xx for the 0x004d part. This fixes a regression caused by d4e58e5928 (powerpc/powernv: Enable POWER8 doorbell IPIs). With that patch the kernel would hang at boot when calling smp_call_function_many, as the doorbell would not be received by the target CPUs: .smp_call_function_many+0x2bc/0x3c0 (unreliable) .on_each_cpu_mask+0x30/0x100 .cpuidle_register_driver+0x158/0x1a0 .cpuidle_register+0x2c/0x110 .powernv_processor_idle_init+0x23c/0x2c0 .do_one_initcall+0xd4/0x260 .kernel_init_freeable+0x25c/0x33c .kernel_init+0x1c/0x120 .ret_from_kernel_thread+0x58/0x7c Fixes: d4e58e5928 (powerpc/powernv: Enable POWER8 doorbell IPIs) Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>		2014-07-22 15:55:24 +10:00
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asm	powerpc: Disable doorbells on Power8 DD1.x	2014-07-22 15:55:24 +10:00
uapi/asm	powerpc: Add AT_HWCAP2 to indicate V.CRYPTO category support	2014-06-11 16:31:20 +10:00