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2014-11-07powerpc/dts: Factorize the clock control nodeEmil Medve
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Change-Id: I25ce24a25862b4ca460164159867abefe00ccdd1 Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc: Add INA220 to device tree for supported boardsHongtao Jia
Including: P3041DS P5020DS P5040DS B4QDS Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc: Add ADT7461 to device tree for supported boardsHongtao Jia
Including: T104xRDB T208xQDS B4QDS Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/fsl: Added rcw registers to global utility registersIgal Liberman
The RCW registers are required for the future clock binding implementation. Signed-off-by: Igal Liberman <Igal.Liberman@freescale.com> Change-Id: Ic36dd8bc2959aa7f97fb6fd7bbb8420822fef0a9 Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/mpc85xx: Remove SPI and NAND partition from bsc9131rdb.dtsiAshish Kumar
* Run "mtdparts default" on u-boot to create dynamic partitions * Or use dynamic mtd partition with the help of bootargs in u-boot Append bootargs with: "mtdparts=ff800000.flash:1m(nand_uboot),512K(nand_dtb),8m(nand_kernel),-(fs);\ spiff707000.0:1m(spi_uboot),4m(spi_kernel),512k(spi_dtb),-(fs)'" Signed-off-by: Ashish Kumar <Ashish.Kumar@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Remove Kconfig symbol FADSPaul Bolle
Commit 39eb56da2b53 ("pcmcia: Remove m8xx_pcmcia driver") removed the only driver that used CONFIG_FADS. Setting the Kconfig symbol FADS is pointless since that commit. Remove it. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Invalidate non present TLB as early as possibleLEROY Christophe
8xx sometimes need to load a invalid/non-present TLBs in it DTLB asm handler. These must be invalidated separaly as linux mm doesn't. Commit 5efab4a02c89c252fb4cce097aafde5f8208dbfe was invalidating them in arch/powerpc/mm/fault.c. This patch does the invalidation earlier in order to free the TLB as soon as possible. This also has the advantage of removing some 8xx specific code from fault.c Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Use DAR to save r3 for CPU6 ERRATALEROY Christophe
As we are not using anymore DAR to save registers, it is now available for saving the r3 register used for CPU6 ERRATA handling. Therefore we can remove the major hack which was to use memory location 0 to save r3. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Don't restore regs to save them again.LEROY Christophe
There is not need to restore r10, r11 and cr registers at this end of ITLBmiss handler as they are saved again to the same place in ITLBError handler we are jumping to. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: _PMD_PRESENT already set in level 1 entriesLEROY Christophe
When a PMD entry is valid, _PMD_PRESENT is set. Therefore, forcing that bit during TLB loading is useless. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: set PTE bit 22 off TLBmissLEROY Christophe
No need to re-set this bit at each TLB miss. Let's set it in the PTE. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Better readibility of ERRATA CPU6 handlingLEROY Christophe
This patch hiddes that SPR address needed for CPU6 ERRATA handling in the macro. Then we don't have to worry about this address directly in the code. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Implement 16k pagesLEROY Christophe
This patch activates the handling of 16k pages on the MPC8xx. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Const for TLB RPN forced valueLEROY Christophe
Value 0x00f0 is used to force bits in TLB level 2 entry. This value is linked to the page size and will vary when we change the page size. Lets define a const for it in order to have it at only one place. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Use PAGE size related constsLEROY Christophe
For PAGE size related operations, use PAGE size consts in order to be able to use different page size in the futur. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Don't use MD_TWC for walkLEROY Christophe
MD_TWC can only be used properly with 4k pages. So lets calculate level 2 table index by ourselves. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: Use M_TW instead of M_TWBLEROY Christophe
Use M_TW instead of M_TWB for storing Level 1 table address as M_TWB requires 4k aligned tables, which is only the case with 4k pages. Consequently, we have to calculate the level 1 table index by ourselves. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: No need to restore registers and save them again.LEROY Christophe
In DTLBError handler there is not need to restore r10, r11 and cr registers after fixing DAR as they are saved again to the same place just after. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: DataAccess exception not generated by MPC8xxLEROY Christophe
DataAccess exception is never generated by MPC8xx so do the job directly where it is used to avoid an unnecessary branching. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-07powerpc/8xx: exception InstructionAccess does not exist on MPC8xxLEROY Christophe
Exception InstructionAccess does not exist on MPC8xx. No need to branch there from somewhere else. Handling can be done directly in InstructionTLBError Exception. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com>
2014-11-05powerpc: Remove ppc_md.remove_memoryAnton Blanchard
We have an extra level of indirection on memory hot remove which is not matched on memory hot add. Memory hotplug is book3s only, so there is no need for it. This also enables means remove_memory() (ie memory hot unplug) works on powernv. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-05powerpc: Remove ppc64_boot_msgAnton Blanchard
ppc64_boot_msg is meant to be a boot debug aid, but is only used in one spot. Get rid of it, and save ourseleves a couple of lines in the kernel log buffer. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-05powerpc/pci: Quieten unset I/O resource warningAnton Blanchard
Newer POWER designs do not implement PCI I/O space, so we expect to see a number of these. Reduce the severity of the warning so it doesn't mask other real issues. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-05powerpc: Use probe_kernel_address in show_instructionsAnton Blanchard
We really don't want to take a pagefault in show_instructions, so use probe_kernel_address instead of __get_user. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-05Merge branch 'topic/get-cpu-var' into nextMichael Ellerman
2014-11-05Merge branch 'topic/pm-power-off' into nextMichael Ellerman
2014-11-04Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux Pull powerpc fixes from Michael Ellerman: "Some more powerpc fixes if you please" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: powerpc: use device_online/offline() instead of cpu_up/down() powerpc/powernv: Properly fix LPC debugfs endianness powerpc: do_notify_resume can be called with bad thread_info flags argument powerpc/fadump: Fix endianess issues in firmware assisted dump handling powerpc: Fix section mismatch warning
2014-11-03Merge branch 'platform/remove_owner' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into driver-core-next Remove all .owner fields from platform drivers
2014-11-03PPC: bpf_jit_comp: add SKF_AD_PKTTYPE instructionDenis Kirjanov
Add BPF extension SKF_AD_PKTTYPE to ppc JIT to load skb->pkt_type field. Before: [ 88.262622] test_bpf: #11 LD_IND_NET 86 97 99 PASS [ 88.265740] test_bpf: #12 LD_PKTTYPE 109 107 PASS After: [ 80.605964] test_bpf: #11 LD_IND_NET 44 40 39 PASS [ 80.607370] test_bpf: #12 LD_PKTTYPE 9 9 PASS CC: Alexei Starovoitov<alexei.starovoitov@gmail.com> CC: Michael Ellerman<mpe@ellerman.id.au> Cc: Matt Evans <matt@ozlabs.org> Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org> v2: Added test rusults Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-03move d_rcu from overlapping d_child to overlapping d_aliasAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-11-03powerpc: Convert power off logic to pm_power_offAlexander Graf
The generic Linux framework to power off the machine is a function pointer called pm_power_off. The trick about this pointer is that device drivers can potentially implement it rather than board files. Today on powerpc we set pm_power_off to invoke our generic full machine power off logic which then calls ppc_md.power_off to invoke machine specific power off. However, when we want to add a power off GPIO via the "gpio-poweroff" driver, this card house falls apart. That driver only registers itself if pm_power_off is NULL to ensure it doesn't override board specific logic. However, since we always set pm_power_off to the generic power off logic (which will just not power off the machine if no ppc_md.power_off call is implemented), we can't implement power off via the generic GPIO power off driver. To fix this up, let's get rid of the ppc_md.power_off logic and just always use pm_power_off as was intended. Then individual drivers such as the GPIO power off driver can implement power off logic via that function pointer. With this patch set applied and a few patches on top of QEMU that implement a power off GPIO on the virt e500 machine, I can successfully turn off my virtual machine after halt. Signed-off-by: Alexander Graf <agraf@suse.de> [mpe: Squash into one patch and update changelog based on cover letter] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-03powerpc: Replace __get_cpu_var usesChristoph Lameter
This still has not been merged and now powerpc is the only arch that does not have this change. Sorry about missing linuxppc-dev before. V2->V2 - Fix up to work against 3.18-rc1 __get_cpu_var() is used for multiple purposes in the kernel source. One of them is address calculation via the form &__get_cpu_var(x). This calculates the address for the instance of the percpu variable of the current processor based on an offset. Other use cases are for storing and retrieving data from the current processors percpu area. __get_cpu_var() can be used as an lvalue when writing data or on the right side of an assignment. __get_cpu_var() is defined as : __get_cpu_var() always only does an address determination. However, store and retrieve operations could use a segment prefix (or global register on other platforms) to avoid the address calculation. this_cpu_write() and this_cpu_read() can directly take an offset into a percpu area and use optimized assembly code to read and write per cpu variables. This patch converts __get_cpu_var into either an explicit address calculation using this_cpu_ptr() or into a use of this_cpu operations that use the offset. Thereby address calculations are avoided and less registers are used when code is generated. At the end of the patch set all uses of __get_cpu_var have been removed so the macro is removed too. The patch set includes passes over all arches as well. Once these operations are used throughout then specialized macros can be defined in non -x86 arches as well in order to optimize per cpu access by f.e. using a global register that may be set to the per cpu base. Transformations done to __get_cpu_var() 1. Determine the address of the percpu instance of the current processor. DEFINE_PER_CPU(int, y); int *x = &__get_cpu_var(y); Converts to int *x = this_cpu_ptr(&y); 2. Same as #1 but this time an array structure is involved. DEFINE_PER_CPU(int, y[20]); int *x = __get_cpu_var(y); Converts to int *x = this_cpu_ptr(y); 3. Retrieve the content of the current processors instance of a per cpu variable. DEFINE_PER_CPU(int, y); int x = __get_cpu_var(y) Converts to int x = __this_cpu_read(y); 4. Retrieve the content of a percpu struct DEFINE_PER_CPU(struct mystruct, y); struct mystruct x = __get_cpu_var(y); Converts to memcpy(&x, this_cpu_ptr(&y), sizeof(x)); 5. Assignment to a per cpu variable DEFINE_PER_CPU(int, y) __get_cpu_var(y) = x; Converts to __this_cpu_write(y, x); 6. Increment/Decrement etc of a per cpu variable DEFINE_PER_CPU(int, y); __get_cpu_var(y)++ Converts to __this_cpu_inc(y) Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Paul Mackerras <paulus@samba.org> Signed-off-by: Christoph Lameter <cl@linux.com> [mpe: Fix build errors caused by set/or_softirq_pending(), and rework assignment in __set_breakpoint() to use memcpy().] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-11-02powerpc: use device_online/offline() instead of cpu_up/down()Dan Streetman
In powerpc pseries platform dlpar operations, use device_online() and device_offline() instead of cpu_up() and cpu_down(). Calling cpu_up/down() directly does not update the cpu device offline field, which is used to online/offline a cpu from sysfs. Calling device_online/offline() instead keeps the sysfs cpu online value correct. The hotplug lock, which is required to be held when calling device_online/offline(), is already held when dlpar_online/offline_cpu() are called, since they are called only from cpu_probe|release_store(). This patch fixes errors on phyp (PowerVM) systems that have cpu(s) added/removed using dlpar operations; without this patch, the /sys/devices/system/cpu/cpuN/online nodes do not correctly show the online state of added/removed cpus. Signed-off-by: Dan Streetman <ddstreet@ieee.org> Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com> Fixes: 0902a9044fa5 ("Driver core: Use generic offline/online for CPU offline/online") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-31Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "Mostly tooling fixes, plus on the kernel side: - a revert for a newly introduced PMU driver which isn't complete yet and where we ran out of time with fixes (to be tried again in v3.19) - this makes up for a large chunk of the diffstat. - compilation warning fixes - a printk message fix - event_idx usage fixes/cleanups" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf probe: Trivial typo fix for --demangle perf tools: Fix report -F dso_from for data without branch info perf tools: Fix report -F dso_to for data without branch info perf tools: Fix report -F symbol_from for data without branch info perf tools: Fix report -F symbol_to for data without branch info perf tools: Fix report -F mispredict for data without branch info perf tools: Fix report -F in_tx for data without branch info perf tools: Fix report -F abort for data without branch info perf tools: Make CPUINFO_PROC an array to support different kernel versions perf callchain: Use global caching provided by libunwind perf/x86/intel: Revert incomplete and undocumented Broadwell client support perf/x86: Fix compile warnings for intel_uncore perf: Fix typos in sample code in the perf_event.h header perf: Fix and clean up initialization of pmu::event_idx perf: Fix bogus kernel printk perf diff: Add missing hists__init() call at tool start
2014-10-31powerpc/powernv: Properly fix LPC debugfs endiannessBenjamin Herrenschmidt
Endian is hard, especially when I designed a stupid FW interface, and I should know better... oh well, this is attempt #2 at fixing this properly. This time it seems to work with all access sizes and I can run my flashing tool (which exercises all sort of access sizes and types to access the SPI controller in the BMC) just fine. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: stable@vger.kernel.org Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-31powerpc: do_notify_resume can be called with bad thread_info flags argumentAnton Blanchard
Back in 7230c5644188 ("powerpc: Rework lazy-interrupt handling") we added a call out to restore_interrupts() (written in c) before calling do_notify_resume: bl restore_interrupts addi r3,r1,STACK_FRAME_OVERHEAD bl do_notify_resume Unfortunately do_notify_resume takes two arguments, the second one being the thread_info flags: void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags) We do populate r4 (the second argument) earlier, but restore_interrupts() is free to muck it up all it wants. My guess is the gcc compiler gods shone down on us and its register allocator never used r4. Sometimes, rarely, luck is on our side. LLVM on the other hand did trample r4. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: stable@vger.kernel.org Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-30powerpc/fadump: Fix endianess issues in firmware assisted dump handlingHari Bathini
Firmware-assisted dump (fadump) kernel code is not endian safe. The below patch fixes this issue. Tested this patch with upstream kernel. Below output shows crash tool successfully opening LE fadump vmcore. # crash vmlinux vmcore GNU gdb (GDB) 7.6 This GDB was configured as "powerpc64le-unknown-linux-gnu"... KERNEL: vmlinux DUMPFILE: vmcore CPUS: 16 DATE: Wed Dec 31 19:00:00 1969 UPTIME: 00:03:28 LOAD AVERAGE: 0.46, 0.86, 0.41 TASKS: 268 NODENAME: linux-dhr2 RELEASE: 3.17.0-rc5-7-default VERSION: #6 SMP Tue Sep 30 01:06:34 EDT 2014 MACHINE: ppc64le (4116 Mhz) MEMORY: 40 GB PANIC: "Oops: Kernel access of bad area, sig: 11 [#1]" (check log for details) PID: 6223 COMMAND: "bash" TASK: c0000009661b2500 [THREAD_INFO: c000000967ac0000] CPU: 2 STATE: TASK_RUNNING (PANIC) Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com> [mpe: Make the comment in pSeries_lpar_hptab_clear() clearer] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-30powerpc: Fix section mismatch warningFabian Frederick
Add __init to MMU_setup() which uses __initdata boot_command_line. Also MMU_setup() is only called from MMU_init(), which is also __init. Warning appeared since commit 3e47d1474c2b. Fixes: 3e47d1474c2b ("powerpc: Remove powerpc specific cmd_line") Signed-off-by: Fabian Frederick <fabf@skynet.be> [mpe: Update changelog] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-29powerpc: Fix comment typo 'CONIFG_8xx'Paul Bolle
Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-10-29powerpc: Fix comment typos 'CONFiG_ALTIVEC'Paul Bolle
Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-10-29IBM Akebono: Remove obsolete config selectAlistair Popple
The original implementation of MMC support for Akebono introduced a new configuration symbol (MMC_SDHCI_OF_476GTR). This symbol has been dropped in favour of using the generic platform driver however the select for this symbol was mistakenly left in the platform configuration. This patch removes the obsolete symbol selection. Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-10-29powerpc/numa: ensure per-cpu NUMA mappings are correct on topology updateNishanth Aravamudan
We received a report of warning in kernel/sched/core.c where the sched group was NULL on an LPAR after a topology update. This seems to occur because after the topology update has moved the CPUs, cpu_to_node is returning the old value still, which ends up breaking the consistency of the NUMA topology in the per-cpu maps. Ensure that we update the per-cpu fields when we re-map CPUs. Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-29powerpc/numa: use cached value of update->cpu in update_cpu_topologyNishanth Aravamudan
There isn't any need to keep referring to update->cpu, as we've already checked cpu == update->cpu at this point. Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-28perf: Fix and clean up initialization of pmu::event_idxPeter Zijlstra
Andy reported that the current state of event_idx is rather confused. So remove all but the x86_pmu implementation and change the default to return 0 (the safe option). Reported-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Christoph Lameter <cl@linux.com> Cc: Cody P Schafer <cody@linux.vnet.ibm.com> Cc: Cody P Schafer <dev@codyps.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Himangi Saraogi <himangi774@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Paul Mackerras <paulus@samba.org> Cc: sukadev@linux.vnet.ibm.com <sukadev@linux.vnet.ibm.com> Cc: Thomas Huth <thuth@linux.vnet.ibm.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: linux390@de.ibm.com Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-s390@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-10-28powerpc/mm: Use appropriate ESID mask in copro_calculate_slb()Ian Munsie
This patch makes copro_calculate_slb() mask the ESID by the correct mask for 1T vs 256M segments. This has no effect by itself as the extra bits were ignored, but it makes debugging the segment table entries easier and means that we can directly compare the ESID values for duplicates without needing to worry about masking in the comparison. This will be used to simplify a comparison in the following patch. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-28Revert "powerpc/powernv: Fix endian bug in LPC bus debugfs accessors"Michael Ellerman
This reverts commit bf7588a0859580a45c63cb082825d77c13eca357. Ben says although the code is not correct "[this] fix was completely wrong and does more damages than it fixes things." Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-23powernv: Use _GLOBAL_TOC for opal wrappersJeremy Kerr
Currently, we can't call opal wrappers from modules when using the LE ABIv2, which requires a TOC init. If we do we'll try and load the opal entry point using the wrong toc and probably explode or worse jump to the wrong address. Nothing in upstream is making opal calls from a module, but we do export one of the wrappers so we should fix this anyway. This change uses the _GLOBAL_TOC() macro (rather than _GLOBAL) for the opal wrappers, so that we can do non-local calls to them. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-22powerpc: Wire up sys_bpf() syscallPranith Kumar
This patch wires up the new syscall sys_bpf() on powerpc. Passes the tests in samples/bpf: #0 add+sub+mul OK #1 unreachable OK #2 unreachable2 OK #3 out of range jump OK #4 out of range jump2 OK #5 test1 ld_imm64 OK #6 test2 ld_imm64 OK #7 test3 ld_imm64 OK #8 test4 ld_imm64 OK #9 test5 ld_imm64 OK #10 no bpf_exit OK #11 loop (back-edge) OK #12 loop2 (back-edge) OK #13 conditional loop OK #14 read uninitialized register OK #15 read invalid register OK #16 program doesn't init R0 before exit OK #17 stack out of bounds OK #18 invalid call insn1 OK #19 invalid call insn2 OK #20 invalid function call OK #21 uninitialized stack1 OK #22 uninitialized stack2 OK #23 check valid spill/fill OK #24 check corrupted spill/fill OK #25 invalid src register in STX OK #26 invalid dst register in STX OK #27 invalid dst register in ST OK #28 invalid src register in LDX OK #29 invalid dst register in LDX OK #30 junk insn OK #31 junk insn2 OK #32 junk insn3 OK #33 junk insn4 OK #34 junk insn5 OK #35 misaligned read from stack OK #36 invalid map_fd for function call OK #37 don't check return value before access OK #38 access memory with incorrect alignment OK #39 sometimes access memory with incorrect alignment OK #40 jump test 1 OK #41 jump test 2 OK #42 jump test 3 OK #43 jump test 4 OK Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> [mpe: test using samples/bpf] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-22powerpc/mm: Remove redundant #if caseAneesh Kumar K.V
Remove the check of CONFIG_PPC_SUBPAGE_PROT when deciding if is_hugepage_only_range() is extern or inline. The extern version is in slice.c and is built if CONFIG_PPC_MM_SLICES=y. There was no build break possible because CONFIG_PPC_SUBPAGE_PROT is only selectable under conditions which also mean CONFIG_PPC_MM_SLICES will be selected. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-22powerpc/mm: Fix build error with hugetlfs disabledAneesh Kumar K.V
arch/powerpc/mm/slice.c:704:5: error: expected identifier or ‘(’ before numeric constant int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, ^ make[1]: *** [arch/powerpc/mm/slice.o] Error 1 make: *** [arch/powerpc/mm/slice.o] Error 2 This got introduced via 1217d34b531c76362217057ca70a8ce8950574e0 "powerpc: Ensure global functions include their prototype". We started including linux/hugetlb.h with that patch and now we have #define is_hugepage_only_range(mm, addr, len) 0 with hugetlbfs disabled. Fixes: 1217d34b531c ("powerpc: Ensure global functions include their prototype") Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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