Pull powerpc updates from Michael Ellerman: - Numerous minor fixes, cleanups etc. - More EEH work from Gavin to remove its dependency on device_nodes. - Memory hotplug implemented entirely in the kernel from Nathan Fontenot. - Removal of redundant CONFIG_PPC_OF by Kevin Hao. - Rewrite of VPHN parsing logic & tests from Greg Kurz. - A fix from Nish Aravamudan to reduce memory usage by clamping nodes_possible_map. - Support for pstore on powernv from Hari Bathini. - Removal of old powerpc specific byte swap routines by David Gibson. - Fix from Vasant Hegde to prevent the flash driver telling you it was flashing your firmware when it wasn't. - Patch from Ben Herrenschmidt to add an OPAL heartbeat driver. - Fix for an oops causing get/put_cpu_var() imbalance in perf by Jan Stancek. - Some fixes for migration from Tyrel Datwyler. - A new syscall to switch the cpu endian by Michael Ellerman. - Large series from Wei Yang to implement SRIOV, reviewed and acked by Bjorn. - A fix for the OPAL sensor driver from Cédric Le Goater. - Fixes to get STRICT_MM_TYPECHECKS building again by Michael Ellerman. - Large series from Daniel Axtens to make our PCI hooks per PHB rather than per machine. - Small patch from Sam Bobroff to explicitly abort non-suspended transactions on syscalls, plus a test to exercise it. - Numerous reworks and fixes for the 24x7 PMU from Sukadev Bhattiprolu. - Small patch to enable the hard lockup detector from Anton Blanchard. - Fix from Dave Olson for missing L2 cache information on some CPUs. - Some fixes from Michael Ellerman to get Cell machines booting again. - Freescale updates from Scott: Highlights include BMan device tree nodes, an MSI erratum workaround, a couple minor performance improvements, config updates, and misc fixes/cleanup. * tag 'powerpc-4.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (196 commits) powerpc/powermac: Fix build error seen with powermac smp builds powerpc/pseries: Fix compile of memory hotplug without CONFIG_MEMORY_HOTREMOVE powerpc: Remove PPC32 code from pseries specific find_and_init_phbs() powerpc/cell: Fix iommu breakage caused by controller_ops change powerpc/eeh: Fix crash in eeh_add_device_early() on Cell powerpc/perf: Cap 64bit userspace backtraces to PERF_MAX_STACK_DEPTH powerpc/perf/hv-24x7: Fail 24x7 initcall if create_events_from_catalog() fails powerpc/pseries: Correct memory hotplug locking powerpc: Fix missing L2 cache size in /sys/devices/system/cpu powerpc: Add ppc64 hard lockup detector support oprofile: Disable oprofile NMI timer on ppc64 powerpc/perf/hv-24x7: Add missing put_cpu_var() powerpc/perf/hv-24x7: Break up single_24x7_request powerpc/perf/hv-24x7: Define update_event_count() powerpc/perf/hv-24x7: Whitespace cleanup powerpc/perf/hv-24x7: Define add_event_to_24x7_request() powerpc/perf/hv-24x7: Rename hv_24x7_event_update powerpc/perf/hv-24x7: Move debug prints to separate function powerpc/perf/hv-24x7: Drop event_24x7_request() powerpc/perf/hv-24x7: Use pr_devel() to log message ... Conflicts: tools/testing/selftests/powerpc/Makefile tools/testing/selftests/powerpc/tm/Makefile
There's a new variant of POWER8 coming called "POWER8 with NVLink". The core is identical to POWER8 but unfortunately they strapped it with a different PVR, so we need to add an explicit entry for it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
The flush_tlb hook in cpu_spec was introduced as a generic function hook to invalidate TLBs. But the current implementation of flush_tlb hook takes IS (invalidation selector) as an argument which is architecture dependent. Hence, It is not right to have a generic routine where caller has to pass non-generic argument. This patch fixes this and makes flush_tlb hook as high level API. Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Esben Haabendal <eha@deif.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
SPE exception handlers are now defined for 32-bit e500mc cores even though SPE unit is not present and CONFIG_SPE is undefined. Restrict SPE exception handlers to e200/e500 cores adding CONFIG_SPE_POSSIBLE and consequently guard __stup_ivors and __setup_cpu functions. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Acked-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
We have a strange #define in cputable.h called CLASSIC_PPC. Although it is defined for 32 & 64bit, it's only used for 32bit and it's basically a duplicate of CONFIG_PPC_BOOK3S_32, so let's use the latter. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
We inadvertently broke power3 support back in 3.4 with commit f5339277eb8d "powerpc: Remove FW_FEATURE ISERIES from arch code". No one noticed until at least 3.9. By then we'd also broken it with the optimised memcpy, copy_to/from_user and clear_user routines. We don't want to add any more complexity to those just to support ancient cpus, so it seems like it's a good time to drop support for power3 and earlier. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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 d4e58e5928f8 (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: d4e58e5928f8 (powerpc/powernv: Enable POWER8 doorbell IPIs) Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
__attribute__ ((unused)) WSP is the last user of CONFIG_PPC_A2, so we remove that as well. Although CONFIG_PPC_ICSWX still exists, it's no longer selectable for any Book3E platform, so we can remove the code in mmu-book3e.h that depended on it. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The Vector Crypto category instructions are supported by current POWER8 chips, advertise them to userspace using a specific bit to properly differentiate with chips of the same architecture level that might not have them. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: <stable@vger.kernel.org> [v3.10+]