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2017-02-21powerpc/pseries: Advertise Hot Plug Event support to firmwareMichael Roth2-1/+2
With the inclusion of commit 333f7b76865b ("powerpc/pseries: Implement indexed-count hotplug memory add") and commit 753843471cbb ("powerpc/pseries: Implement indexed-count hotplug memory remove"), we now have complete handling of the RTAS hotplug event format as described by PAPR via ACR "PAPR Changes for Hotplug RTAS Events". This capability is indicated by byte 6, bit 2 (5 in IBM numbering) of architecture option vector 5, and allows for greater control over cpu/memory/pci hot plug/unplug operations. Existing pseries kernels will utilize this capability based on the existence of the /event-sources/hot-plug-events DT property, so we only need to advertise it via CAS and do not need a corresponding FW_FEATURE_* value to test for. Signed-off-by: Michael Roth <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-21cxl: fix nested locking hang during EEH hotplugAndrew Donnellan4-10/+27
Commit 14a3ae34bfd0 ("cxl: Prevent read/write to AFU config space while AFU not configured") introduced a rwsem to fix an invalid memory access that occurred when someone attempts to access the config space of an AFU on a vPHB whilst the AFU is deconfigured, such as during EEH recovery. It turns out that it's possible to run into a nested locking issue when EEH recovery fails and a full device hotplug is required. cxl_pci_error_detected() deconfigures the AFU, taking a writer lock on configured_rwsem. When EEH recovery fails, the EEH code calls pci_hp_remove_devices() to remove the device, which in turn calls cxl_remove() -> cxl_pci_remove_afu() -> pci_deconfigure_afu(), which tries to grab the writer lock that's already held. Standard rwsem semantics don't express what we really want to do here and don't allow for nested locking. Fix this by replacing the rwsem with an atomic_t which we can control more finely. Allow the AFU to be locked multiple times so long as there are no readers. Fixes: 14a3ae34bfd0 ("cxl: Prevent read/write to AFU config space while AFU not configured") Cc: [email protected] # v4.9+ Signed-off-by: Andrew Donnellan <[email protected]> Acked-by: Frederic Barrat <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-21powerpc/xmon: Dump memory in CPU endian formatDouglas Miller1-3/+55
Extend the dump command to allow display of 2, 4, and 8 byte words in CPU endian format. Also adds dump command for "1 byte values" for the sake of symmetry. New commands are: d1 dump 1 byte values d2 dump 2 byte values d4 dump 4 byte values d8 dump 8 byte values Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Douglas Miller <[email protected]> Acked-by: Balbir Singh <[email protected]>
2017-02-21powerpc/pseries: Revert 'Auto-online hotplugged memory'Nathan Fontenot2-16/+37
This reverts commit ec999072442a ("powerpc/pseries: Auto-online hotplugged memory"), and 9dc512819e4b ("powerpc: Fix unused function warning 'lmb_to_memblock'"). Using the auto-online acpability does online added memory but does not update the associated device struct to indicate that the memory is online. This causes the pseries memory DLPAR code to fail when trying to remove a LMB that was previously removed and added back. This happens when validating that the LMB is removable. This patch reverts to the previous behavior of calling device_online() to online the LMB when it is DLPAR added and moves the lmb_to_memblock() routine out of CONFIG_MEMORY_HOTREMOVE now that we call it for add. Fixes: ec999072442a ("powerpc/pseries: Auto-online hotplugged memory") Cc: [email protected] # v4.8+ Signed-off-by: Nathan Fontenot <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-20powerpc/powernv: Make PCI non-optionalMichael Ellerman1-1/+2
Bare metal systems without PCI don't exist, so there's no real point in making PCI optional, it just breaks the build from time to time. In fact the build is broken now if you turn off PCI_MSI but enable KVM. Using select for PCI is OK because we (powerpc) define config PCI, and it has no dependencies. Selecting PCI_MSI is slightly fishy, because it's in drivers/pci and it is user-visible, but its only dependency is PCI, so selecting it can't actually lead to breakage. Signed-off-by: Michael Ellerman <[email protected]> Acked-by: Gavin Shan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-18Merge branch 'next' of ↵Michael Ellerman19-232/+771
git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next Freescale updates from Scott: "Highlights include 8xx breakpoints and perf, t1042rdb display support, and board updates."
2017-02-18powerpc/64: Implement clear_bit_unlock_is_negative_byte()Nicholas Piggin1-0/+28
Commit b91e1302ad9b8 ("mm: optimize PageWaiters bit use for unlock_page()") added a special bitop function to speed up unlock_page(). Implement this for 64-bit powerpc. This improves the unlock_page() core code from this: li 9,1 lwsync 1: ldarx 10,0,3,0 andc 10,10,9 stdcx. 10,0,3 bne- 1b ori 2,2,0 ld 9,0(3) andi. 10,9,0x80 beqlr li 4,0 b wake_up_page_bit To this: li 10,1 lwsync 1: ldarx 9,0,3,0 andc 9,9,10 stdcx. 9,0,3 bne- 1b andi. 10,9,0x80 beqlr li 4,0 b wake_up_page_bit In a test of elapsed time for dd writing into 16GB of already-dirty pagecache on a POWER8 with 4K pages, which has one unlock_page per 4kB this patch reduced overhead by 1.1%: N Min Max Median Avg Stddev x 19 2.578 2.619 2.594 2.595 0.011 + 19 2.552 2.592 2.564 2.565 0.008 Difference at 95.0% confidence -0.030 +/- 0.006 -1.142% +/- 0.243% Signed-off-by: Nicholas Piggin <[email protected]> [mpe: Made 64-bit only until I can test it properly on 32-bit] Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/powernv: Remove unused variable in pnv_pci_sriov_disable()Gavin Shan1-2/+0
The local variable @iov isn't used, to remove it. Signed-off-by: Gavin Shan <[email protected]> Reviewed-by: Andrew Donnellan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/kernel: Remove error message in pcibios_setup_phb_resources()Gavin Shan1-8/+2
The CAPI driver creates virtual PHB (vPHB) from the CAPI adapter. The vPHB's IO and memory windows aren't built from device-tree node as we do for normal PHBs. A error message is thrown in below path when trying to probe AFUs contained in the adapter. The error message is confusing and unnecessary. cxl_probe() pci_init_afu() cxl_pci_vphb_add() pcibios_scan_phb() pcibios_setup_phb_resources() This removes the error message. We might have the case where the first memory window on real PHB isn't populated properly because of error in "ranges" property in the device-tree node. We can check the device-tree instead for that. This also removes one unnecessary blank line in the function. Signed-off-by: Gavin Shan <[email protected]> Reviewed-by: Andrew Donnellan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/mm: Fix typo in set_pte_at()Gavin Shan1-3/+1
This fixes the typo about the _PAGE_PTE in set_pte_at() by changing "tryint" to "trying to". Signed-off-by: Gavin Shan <[email protected]> Acked-by: Balbir Singh <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17pci/hotplug/pnv-php: Disable MSI and PCI device properlyGavin Shan1-8/+14
pnv_php_disable_irq() can be called in two paths: Bailing path in pnv_php_enable_irq() or releasing slot. The MSI (or MSIx) interrupts is disabled unconditionally in pnv_php_disable_irq(). It's wrong because that might be enabled by drivers other than pnv-php. This disables MSI (or MSIx) interrupts and the PCI device only if it was enabled by pnv-php. In the error path of pnv_php_enable_irq(), we rely on the newly added parameter @disable_device. In the path of releasing slot, @pnv_php->irq is checked. Cc: <[email protected]> # v4.9+ Fixes: 360aebd85a4c ("drivers/pci/hotplug: Support surprise hotplug in powernv driver") Signed-off-by: Gavin Shan <[email protected]> Reviewed-by: Andrew Donnellan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17pci/hotplug/pnv-php: Disable surprise hotplug capability on conflictsGavin Shan1-0/+8
The root port or PCIe switch downstream port might have been associated with driver other than pnv-php. The MSI or MSIx might also have been enabled by that driver (e.g. pcieport_drv). Attempt to enable MSI incurs below backtrace: PowerPC PowerNV PCI Hotplug Driver version: 0.1 ------------[ cut here ]------------ WARNING: CPU: 19 PID: 1004 at drivers/pci/msi.c:1071 \ __pci_enable_msi_range+0x84/0x4e0 NIP [c000000000665c34] __pci_enable_msi_range+0x84/0x4e0 LR [c000000000665c24] __pci_enable_msi_range+0x74/0x4e0 Call Trace: [c000000384d67600] [c000000000665c24] __pci_enable_msi_range+0x74/0x4e0 [c000000384d676e0] [d00000000aa31b04] pnv_php_register+0x564/0x5a0 [pnv_php] [c000000384d677c0] [d00000000aa31658] pnv_php_register+0xb8/0x5a0 [pnv_php] [c000000384d678a0] [d00000000aa31658] pnv_php_register+0xb8/0x5a0 [pnv_php] [c000000384d67980] [d00000000aa31dfc] pnv_php_init+0x60/0x98 [pnv_php] [c000000384d679f0] [c00000000000cfdc] do_one_initcall+0x6c/0x1d0 [c000000384d67ab0] [c000000000b92354] do_init_module+0x94/0x254 [c000000384d67b40] [c00000000019719c] load_module+0x258c/0x2c60 [c000000384d67d30] [c000000000197bb0] SyS_finit_module+0xf0/0x170 [c000000384d67e30] [c00000000000b184] system_call+0x38/0xe0 This fixes the issue by skipping enabling the surprise hotplug capability if the MSI or MSIx on the PCI slot's upstream port has been enabled by other driver. Cc: <[email protected]> # v4.9+ Fixes: 360aebd85a4c ("drivers/pci/hotplug: Support surprise hotplug in powernv driver") Signed-off-by: Gavin Shan <[email protected]> Reviewed-by: Andrew Donnellan <[email protected]> Tested-by: Vaibhav Jain <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17pci/hotplug/pnv-php: Remove WARN_ON() in pnv_php_put_slot()Gavin Shan1-1/+1
The WARN_ON() causes unnecessary backtrace when putting the parent slot, which is likely to be NULL. WARNING: CPU: 2 PID: 1071 at drivers/pci/hotplug/pnv_php.c:85 \ pnv_php_release+0xcc/0x150 [pnv_php] : Call Trace: [c0000003bc007c10] [d00000000ad613c4] pnv_php_release+0x144/0x150 [pnv_php] [c0000003bc007c40] [c0000000006641d8] pci_hp_deregister+0x238/0x330 [c0000003bc007cd0] [d00000000ad61440] pnv_php_unregister_one+0x70/0xa0 [pnv_php] [c0000003bc007d10] [d00000000ad614c0] pnv_php_unregister+0x50/0x80 [pnv_php] [c0000003bc007d40] [d00000000ad61e84] pnv_php_exit+0x50/0xcb4 [pnv_php] [c0000003bc007d70] [c00000000019499c] SyS_delete_module+0x1fc/0x2a0 [c0000003bc007e30] [c00000000000b184] system_call+0x38/0xe0 Cc: <[email protected]> # v4.8+ Fixes: 66725152fb9f ("PCI/hotplug: PowerPC PowerNV PCI hotplug driver") Signed-off-by: Gavin Shan <[email protected]> Reviewed-by: Andrew Donnellan <[email protected]> Tested-by: Vaibhav Jain <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc: Add POWER9 architected mode to cputableRussell Currey1-0/+17
PVR value of 0x0F000005 means we are arch v3.00 compliant (i.e. POWER9). Acked-by: Michael Neuling <[email protected]> Signed-off-by: Russell Currey <[email protected]> [mpe: Don't set num_pmcs, so we keep the PMU fields from the raw entry] Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/perf: use is_kernel_addr macro in perf_get_misc_flags()Madhavan Srinivasan1-1/+1
Cleanup to use is_kernel_addr macro. Signed-off-by: Madhavan Srinivasan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/perf: Avoid FAB_*_MATCH checks for power9Madhavan Srinivasan2-24/+42
Since power9 does not support FAB_*_MATCH bits in MMCR1, avoid these checks for power9. For this, patch factor out code in isa207_get_constraint() to retain these checks only for power8. Patch also updates the comment in power9-pmu raw event encode layout to remove FAB_*_MATCH. Finally for power9, patch adds additional check for threshold events when adding the thresh mask and value in isa207_get_constraint(). fixes: 7ffd948fae4c ('powerpc/perf: factor out power8 pmu functions') fixes: 18201b204286 ('powerpc/perf: power9 raw event format encoding') Signed-off-by: Ravi Bangoria <[email protected]> Signed-off-by: Madhavan Srinivasan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/perf: Add restrictions to PMC5 in power9 DD1Madhavan Srinivasan2-1/+5
PMC5 on POWER9 DD1 may not provide right counts in all sampling scenarios, hence use PM_INST_DISP event instead in PMC2 or PMC3 in preference. Signed-off-by: Madhavan Srinivasan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/perf: Use Instruction Counter valueMadhavan Srinivasan1-0/+36
Since PM_INST_DISP include speculative instruction, based on the workload the dispatch count could vary considerably. Hence as an alternative, for completed instruction counting, program the PM_INST_DISP event to the MMCR* but use Instruction Counter register value. Signed-off-by: Madhavan Srinivasan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/perf: Use PM_INST_DISP for generic instructions sampleMadhavan Srinivasan1-2/+18
Since PM_INST_CMPL may not provide right counts in all sampling scenarios in power9 DD1, instead use PM_INST_DISP. Patch also update generic instruction sampling with the same. Signed-off-by: Madhavan Srinivasan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/perf: Add alternative event table and function for power9Madhavan Srinivasan1-0/+17
Signed-off-by: Madhavan Srinivasan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/perf: Add PM_INST_DISP event to Power9 event listMadhavan Srinivasan1-0/+3
Signed-off-by: Madhavan Srinivasan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/perf: Factor out event_alternative functionMadhavan Srinivasan3-33/+41
Factor out the power8 event_alternative function to share the code with power9. Signed-off-by: Madhavan Srinivasan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/pseries: Implement indexed-count hotplug memory removeSahil Mehta1-0/+98
Indexed-count remove for memory hotplug guarantees that a contiguous block of <count> lmbs beginning at a specified <index> will be unassigned (NOT that <count> lmbs will be removed). Because of Qemu's per-DIMM memory management, the removal of a contiguous block of memory currently requires a series of individual calls. Indexed-count remove reduces this series into a single call. Signed-off-by: Sahil Mehta <[email protected]> Signed-off-by: Nathan Fontenot <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/pseries: Implement indexed-count hotplug memory addSahil Mehta3-12/+147
Indexed-count add for memory hotplug guarantees that a contiguous block of <count> lmbs beginning at a specified <drc index> will be assigned, any LMBs in this range that are not already assigned will be DLPAR added. Because of Qemu's per-DIMM memory management, the addition of a contiguous block of memory currently requires a series of individual calls to add each LMB in the block. Indexed-count add reduces this series of calls to a single call for the entire block. Signed-off-by: Sahil Mehta <[email protected]> Signed-off-by: Nathan Fontenot <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/mm: Blacklist SLB symbols from kprobeMichael Ellerman1-0/+8
We can't sensibly take a trap at this point. So, blacklist these symbols. Reported-by: Anton Blanchard <[email protected]> Signed-off-by: Naveen N. Rao <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17powerpc/mm: Convert slb_finish_load[_1T] to local symbolsMichael Ellerman1-8/+8
slb_finish_load and slb_finish_load_1T are both only used within slb_low.S, so make them local symbols. This makes the code a little clearer, as it's more obvious neither is intended to be an entry point from arbitrary other code, only the uses in this file. It also prevents them being used with kprobes and other tracing tools, which is good because we're not able to safely take traps at these locations, so making them local symbols avoids us needing to blacklist them. Signed-off-by: Naveen N. Rao <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-17MAINTAINERS: Remove powerpc's "opal" pattern matchStewart Smith1-1/+7
The block guys have merged a new driver called "sed-opal", which is getting caught by our pattern match on "opal". So drop our "opal" pattern and replace it with matches against the specific paths for our drivers. We should try and remember to add new drivers as they're added in future. Suggested-by: Jon Derrick <[email protected]> Signed-off-by: Stewart Smith <[email protected]> Reviewed-by: Andrew Donnellan <[email protected]> [mpe: Fix ic2/i2c typo, write change log] Signed-off-by: Michael Ellerman <[email protected]>
2017-02-16powerpc/pseries: Fix build break when MEMORY_HOTREMOVE=nMichael Ellerman1-1/+4
We broke the build when CONFIG_MEMORY_HOTREMOVE=n: arch/powerpc/platforms/pseries/hotplug-memory.c:821:8: error: implicit declaration of function 'dlpar_memory_readd_by_index' Add a dummy to fix it. Fixes: e70d59700fc3 ("powerpc/pseries: Introduce memory hotplug READD operation") Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/asm: Define STACK_PT_REGS_OFFSET macro in asm-offsets.cRashmica Gupta1-29/+32
There are quite a few entries in asm-offests.c which look like: DEFINE(REG, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, reg)); So define a macro to do it once. Signed-off-by: Rashmica Gupta <[email protected]> [mpe: Rename to STACK_PT_REGS_OFFSET for excruciating explicitness] Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/asm: Use OFFSET macro in asm-offsets.cRashmica Gupta1-371/+340
A lot of entries in asm-offests.c look like this: DEFINE(TI_FLAGS, offsetof(struct thread_info, flags)); But there is a common macro, OFFSET, which makes this cleaner: OFFSET(TI_flags, thread_info, flags) So use it. Signed-off-by: Rashmica Gupta <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/spufs: Get rid of broken fasync stuffAl Viro2-62/+6
In all the years it's been in the tree it had never been used by anything - it would instantly trigger BUG_ON() in fs/fcntl.c due to bogus band argument (ie. POLLIN not POLL_IN) passed to kill_fasync(). Since nobody had ever used it in ten years, let's just rip it out and be done with that. Signed-off-by: Al Viro <[email protected]> Acked-by: Arnd Bergmann <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/64e: Fix bogus usage of WARN_ONCE()Michael Ellerman1-7/+5
WARN_ONCE() takes a condition and a format string. We were passing a constant string as the condition, and the function name as the format string. It would work, but the message would be just the function name. Fix it by just using WARN_ONCE() directly instead of if (x) WARN_ONCE(). Noticed-by: Geliang Tang <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15drivers/pci/hotplug: Mask PDC interrupt if requiredGavin Shan2-5/+24
We're supporting surprise hotplug on PCI slots behind root port or PCIe switch downstream ports, which don't claim the capability in hardware register (offset: PCIe cap + PCI_EXP_SLTCAP). PEX8718 is one of the examples. For those PCI slots, the PDC (Presence Detection Change) event isn't reliable and the underly (skiboot) firmware has best judgement. This masks the PDC event when skiboot requests by "ibm,slot-broken-pdc" property in PCI slot's device-tree node. Reported-by: Hank Chang <[email protected]> Signed-off-by: Gavin Shan <[email protected]> Tested-by: Willie Liauw <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15drivers/pci/hotplug: Fix initial state for empty slotGavin Shan1-2/+14
In PowerNV PCI hotplug driver, the initial PCI slot's state is set to PNV_PHP_STATE_POPULATED if no PCI devices are connected to the slot. The PCI devices that are hot added to the slot won't be probed and populated because of the check in pnv_php_enable(): /* Check if the slot has been configured */ if (php_slot->state != PNV_PHP_STATE_REGISTERED) return 0; This fixes the issue by leaving the slot in PNV_PHP_STATE_REGISTERED state initially if nothing is connected to the slot. Fixes: 360aebd85a4 ("drivers/pci/hotplug: Support surprise hotplug in powernv driver") Cc: [email protected] #v4.9+ Reported-by: Hank Chang <[email protected]> Signed-off-by: Gavin Shan <[email protected]> Tested-by: Willie Liauw <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15drivers/pci/hotplug: Handle presence detection change properlyGavin Shan1-1/+5
The surprise hotplug is driven by interrupt in PowerNV PCI hotplug driver. In the interrupt handler, pnv_php_interrupt(), we bail when pnv_pci_get_presence_state() returns zero wrongly. It causes the presence change event is always ignored incorrectly. This fixes the issue by bailing on error (non-zero value) returned from pnv_pci_get_presence_state(). Fixes: 360aebd85a4 ("drivers/pci/hotplug: Support surprise hotplug in powernv driver") Cc: [email protected] #v4.9+ Reported-by: Hank Chang <[email protected]> Signed-off-by: Gavin Shan <[email protected]> Tested-by: Willie Liauw <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/xmon: Enable disassembly files (compilation changes)Balbir Singh4-547/+60
After updating ppc-dis.c, ppc-opc.c and ppc.h the following changes were made to enable compilation and working of xmon: 1. Remove all disassembler_info 2. Use xmon's printf/print_address to output data and addresses respectively. 3. All bfd_* types and casts have been removed. 4. Optimizations related to opcd_indices have been removed. 5. The dialect is set based on cpu features. 6. PPC_OPCODE_CLASSIC is no longer supported in the new disassembler. 7. VLE opcode parsing and printing has been stripped. 8. Coding style conventions used for those routines has been retained and it does not match our CodingStyle. 9. The highest supported dialect is POWER9. 10. Defined ATTRIBUTE_UNUSED in ppc-dis.c. 11. Defined _(x) in ppc-dis.c. Finally, we remove the dependency on BROKEN so that XMON_DISASSEMBLY can be enabled again. Signed-off-by: Balbir Singh <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/xmon: Apply binutils changes to upgrade disassemblyBalbir Singh3-3195/+6292
The following commit-ids from the binutils project were applied on the xmon branch and relicensed with the permission of the authors under GPLv2 for the following files: ppc-opc.c ppc-dis.c ppc.h Working off of binutils commit 65b650b4c746 we have now moved up to binutils commit a5721ba270dd. Some commit logs have been taken verbatim, some are summarized for ease of understanding. Here is a summary of the commits: 33e8d5ac613d PPC7450 New. (powerpc_opcodes): Use it in dcba. c3d65c1ced61 New opcodes and mask 8dbcd839b1bb Instruction Sorting 91eb7075e370 (powerpc_opcodes): Fix the first two operands of dquaiq. 548b1dcfcbab ppc-opc.c (powerpc_opcodes): Remove the dcffix and dcffix. 930bb4cfae30 Support optional L form mtmsr. de866fccd87d (powerpc_opcodes): Order and format. 19a6653ce8c6 ppc e500mc support fa452fa6833c (ppc_cpu_t): New typedef. c8187e1509b2 (parse_cpu): Handle -m464. 081ba1b3c08b Define. (PPC_OPERAND_FSL, PPC_OPERAND_FCR, PPC_OPERAND_UDI) 9b4e57660d38 Rename altivec_or_spe to retain_flags. Handle -mvsx and -mpower7. 899d85beadd0 (powerpc_opcodes): Enable rfci, mfpmr, mtpmr for e300. e1c93c699b7d (extract_sprg): Correct operand range check. 2f3bb96af796 (powerpc_init_dialect): Do not set PPC_OPCODE_BOOKE 1cb0a7674666 (ppc_setup_opcodes): Remove PPC_OPCODE_NOPOWER4 test 21169fcfadfa (print_insn_powerpc): Skip insn if it is deprecated 80890a619b85 ("dcbt", "dcbtst") 0e55be1624c2 ("lfdepx", "stfdepx") 066be9f7bd8e (parse_cpu): Extend -mpower7 to accept power7 and isel instructions. c72ab5f2c55d (powerpc_opcodes): Reorder the opcode table so that instructions 69fe9ce501f5 (ppc_parse_cpu): New function. (powerpc_init_dialect) e401b04ca7cd (powerpc_opcodes) <"dcbzl">: Merge the POWER4 and E500MC entries. 70dc4e324b9a (powerpc_init_dialect): Do not choose a default dialect due to -many/-Many. 858d7a6db20b (powerpc_opcodes) <"tlbilxlpid", "tlbilxpid", "tlbilxva", "tlbilx" bdc7fcfe59f1 (powerpc_macros <extrdi>): Allow n+b of 64 e0d602ecffb0 (md_show_usage): Document -mpcca2 b961e85b6ebe (ppc_cpu_t): Typedef to uint64_t 8765b5569284 (powerpc_opcodes): Remove support for the the "lxsdux", "lxvd2ux" 634b50f2a623 Rename "ppca2" to "a2" 9fe54b1ca1c0 (md_show_usage): Document -m476 0dc9305793c8 Add bfd_mach_ppc_e500mc64 ce3d2015b21b Define. bfd/ * archures.c (bfd_mach_ppc_titan) cdc51b0748c4 Add -mpwr4, -mpwr5, -mpwr5x, -mpwr6 and -mpwr7 63d0fa4e9e57 Add PPC_OPCODE_E500MC for "e500mc64" cee62821d472 New Define. ("dccci"): Enable for PPCA2 85d4ac0b3c0b Correct wclr encoding. 51b5d4a8c5e5 (powerpc_opcodes): Enable divdeu, devweu, divde, divwe, divdeuo e01d869a3be2 (md_assemble): Emit APUinfo section for PPC_OPCODE_E500 09a8ad8d8f56 (powerpc_opcodes): Revert deprecation of mfocrf, mtcrf and mtocrf on EFS. f2bae120dcef (PPC_OPCODE_COMMON): Expand comment. 81a0b7e2ae09 (PPCPWR2): Add PPC_OPCODE_COMMON. (powerpc_opcodes): Add "subc" bdc70b4a03fd (PPC_OPCODE_32, PPC_OPCODE_BOOKE64, PPC_OPCODE_CLASSIC) 7102e95e4943 (ppc_set_cpu): Cast PPC_OPCODE_xxx to ppc_cpu_t before inverting f383de6633cb (powerpc_opcodes) [lswx,lswi,stswx,stswi]: Deprecate on E500 and E500MC 6b069ee70de3 Remove PPC_OPCODE_PPCPS 2f7f77101279 (powerpc_opcodes): Enable icswx for POWER7 989993d80a97 (insert_nbi, insert_rbx, FRAp, FRBp, FRSp, FRTp, NBI, RAX, RBX) a08fc94222d1 <drrndq, drrndq., dtstexq, dctqpq, dctqpq., dctfixq, dctfixq. 8ebac3aae962 (ISA_V2): Define and use for relevant BO field tests aea77599d0db Add PPC_OPCODE_ALTIVEC2, PPC_OPCODE_E6500, PPC_OPCODE_TMR b240011aba98 (disassemble_init_for_target): Handle ppc init. d668828207c2 (powerpc_opcd_indices): Bump array size b9c361e0ad33 Add support for PowerPC VLE. e1dad58d73dc (has_tls_reloc, has_tls_get_addr_call, has_vle_insns, is_ppc_vle) df7b86aa4cb6 Add check that sysdep.h has been included before 98c76446ea6b (extract_sprg): Use ALLOW8_SPRG to include VLE. a4ebc835cbcb (powerpc_macros): Add entries for e_extlwi to e_clrlslwi 94caa966375d (has_vle_insns, is_ppc_vle): Delete c7a8dbf91f37 Change RA to RA0 d908c8af5a1d Add necessary casts for printing integer values 03edbe3bfb93 Add/remove PPCVLE for some 32-bit insns 9f6a6cc022e1 <xnop, yield, mdoio, mdoom>: New extended mnemonics 588925d06545 <RSQ, RTQ>: Use PPC_OPERAND_GPR 8baf7b78b5d9 <"lswx">: Use RAX for the second and RBX for the third operand e67ed0e885d6 Changed opcode for vabsdub, vabsduh, vabsduw, mviwsplt fb048c26f19f (UIMM4, UIMM3, UIMM2, VXVA_MASK, VXVB_MASK, VXVAVB_MASK, VXVDVA_MASK 382c72e90441 (VXASHB_MASK): New define c7a5aa9c64fc (ppc_opts) <altivec>: Use PPC_OPCODE_ALTIVEC2 ab4437c3224f <vcfpsxws>: Fix opcode spelling 62082a42b9cd "lfdp" and "stfdp" use DS offset. 776fc41826bb (ppc_parse_cpu): Update prototype 943d398f4c52 (insert_sci8, extract_sci8): Rewrite. 5817ffd1f81c New define (PPC_OPCODE_HTM/POWER8) 9f0682fe89d9 (extract_vlesi): Properly sign extend c0637f3af686 (powerpc_init_dialect): Set default dialect to power8. 58ae08f29af8 (powerpc_opcodes): Add tdui, twui, tdu, twu, tui, tu 4f6ffcd38d90 (powerpc_init_dialect): Use ppc_parse_cpu() to set dialect 4b95cf5c0c75 Update copyright years a47622ac1bad Allow both signed and unsigned fields in PowerPC cmpli insn 12e87fac5c76 ppc: enable msgclr and msgsnd on Power8 8514e4db84cc Don't deprecate powerpc mftb insn db76a70026ab Power4 should treat mftb as extended mfspr mnemonic b90efa5b79ac ChangeLog rotatation and copyright year update c4e676f19656 powerpc: Add slbfee. instruction 27c49e9a8fc0 powerpc: Only initialise opcode indices once 4fff86c517ab DCBT_EO): New define 4bc0608a8b69 Fix some PPC assembler errors dc302c00611b Add hwsync extended mnemonic 99a2c5612124 Remove unused MTMSRD_L macro and re-add accidentally deleted comment 11a0cf2ec0ed Allow for optional operands with non-zero default values 7b9341139a69 PPC sync instruction accepts invalid and incompatible operands ef5a96d564a2 Remove ppc860, ppc750cl, ppc7450 insns from common ppc 43e65147c07b Remove trailing spaces in opcodes 6dca4fd141fd Add dscr and ctrl SPR mnemonics b6518b387185 Fix compile time warnings generated when compiling with clang 36f7a9411dcd Patches for illegal ppc 500 instructions a680de9a980e Add assembler, disassembler and linker support for power9 dd2887fc3de4 Reorder some power9 insns b817670b52b7 Enable 2 operand form of powerpc mfcr with -many 6f2750feaf28 Copyright update for binutils afa8d4054b8e Delete opcodes that have been removed from ISA 3.0 1178da445ad5 Accept valid one byte signed and unsigned values for the IMM8 operand e43de63c8fd1 Fix powerpc subis range 514e58b72633 Correct "Fix powerpc subis range" 19dfcc89e8d9 Add support for new POWER ISA 3.0 instructions 1fe0971e41a4 add more extern C 026122a67044 Re-add support for lbarx, lharx, stbcx. and sthcx. insns back to the E6500 cpu 14b57c7c6a53 PowerPC VLE 6fd3a02da554 Add support for yet some more new ISA 3.0 instructions dfdaec14b0db Fix some PowerPC VLE BFD issues and add some PowerPC VLE instructions fd486b633e87 Modify POWER9 support to match final ISA 3.0 documentation a5721ba270dd Disallow 3-operand cmp[l][i] for ppc64 This updates the disassembly capabilities to add support for newer processors. Signed-off-by: Balbir Singh <[email protected]> [mpe: Reformat commit list for brevity] Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/xmon: Update ppc-dis/opc.c and ppc.hBalbir Singh4-570/+493
Upgrade ppc-opc.c, ppc-dis.c and ppc.h to the versions belonging to the following binutils commit: 65b650b4c7463f4508bed523c24ab0031a5ae5cd * ppc-dis.c (print_insn_powerpc): Don't skip all operands after setting skip_optional. That is the last version of those files that were licensed under GPLv2. This leaves the code in a state that does not compile, because the binutils code needs to be tweaked to work in the kernel. We don't fix that in this commit, because we want to import more binutils changes in subsequent commits. So for now we mark XMON_DISASSEMBLY as BROKEN, so it can't be built. Signed-off-by: Balbir Singh <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/mm/radix: Skip ptesync in pte update helpersAneesh Kumar K.V1-3/+0
We do them at the start of tlb flush, and we are sure a pte update will be followed by a tlbflush. Hence we can skip the ptesync in pte update helpers. Signed-off-by: Aneesh Kumar K.V <[email protected]> Tested-by: Michael Neuling <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/mm/radix: Use ptep_get_and_clear_full when clearing pte for full mmAneesh Kumar K.V2-1/+39
This helps us to do some optimization for application exit case, where we can skip the DD1 style pte update sequence. Signed-off-by: Aneesh Kumar K.V <[email protected]> Tested-by: Michael Neuling <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/mm/radix: Update pte update sequence for pte clear caseAneesh Kumar K.V1-9/+3
In the kernel we do follow the below sequence in different code paths. pte = ptep_get_clear(ptep) .... set_pte_at(ptep, pte) We do that for mremap, autonuma protection update and softdirty clearing. This implies our optimization to skip a tlb flush when clearing a pte update is not valid, because for DD1 system that followup set_pte_at will be done witout doing the required tlbflush. Fix that by always doing the dd1 style pte update irrespective of new_pte value. In a later patch we will optimize the application exit case. Signed-off-by: Benjamin Herrenschmidt <[email protected]> Signed-off-by: Aneesh Kumar K.V <[email protected]> Tested-by: Michael Neuling <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/mm: Update PROTFAULT handling in the page fault pathAneesh Kumar K.V2-14/+39
With radix, we can get page fault with DSISR_PROTFAULT value set in case of PROT_NONE or autonuma mapping. The PROT_NONE case in handled by the vma check where we consider the access bad. For autonuma we should fall through and fixup the access mask correctly. Without this patch we trigger the WARN_ON() on radix. This code moves that WARN_ON() within a radix_enabled() check. I also moved the WARN_ON() outside the if condition making it apply for all type of faults (exec/write/read). It is also conditionalized for book3s, because BOOK3E can also get a PROTFAULT to handle the D/I cache sync. Signed-off-by: Aneesh Kumar K.V <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/xmon: Fix data-breakpointRavi Bangoria1-1/+3
Currently xmon data-breakpoint feature is broken. Whenever there is a watchpoint match occurs, hw_breakpoint_handler will be called by do_break via notifier chains mechanism. If watchpoint is registered by xmon, hw_breakpoint_handler won't find any associated perf_event and returns immediately with NOTIFY_STOP. Similarly, do_break also returns without notifying to xmon. Solve this by returning NOTIFY_DONE when hw_breakpoint_handler does not find any perf_event associated with matched watchpoint, rather than NOTIFY_STOP, which tells the core code to continue calling the other breakpoint handlers including the xmon one. Cc: [email protected] Signed-off-by: Ravi Bangoria <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-15powerpc/mm: Fix build break with BOOK3S_64=n and MEMORY_HOTPLUG=yMichael Ellerman1-1/+7
The recently merged HPT (Hash Page Table) resize support broke the build when BOOK3S_64=n (ie. 32-bit or 64-bit Book3E) and MEMORY_HOTPLUG=y: arch/powerpc/mm/mem.o: In function `.arch_add_memory': (.text+0x4e4): undefined reference to `.resize_hpt_for_hotplug' Fix it by adding a dummy version. Fixes: 438cc81a41e8 ("powerpc/pseries: Automatically resize HPT for memory hot add/remove") Signed-off-by: Michael Ellerman <[email protected]>
2017-02-14Merge branch 'topic/ppc-kvm' into nextMichael Ellerman37-249/+1619
Merge the topic branch we're sharing with the kvm-ppc tree.
2017-02-14powerpc/mm: Fix build break when CMA=n && SPAPR_TCE_IOMMU=yMichael Ellerman1-1/+1
Currently the build breaks if CMA=n and SPAPR_TCE_IOMMU=y: arch/powerpc/mm/mmu_context_iommu.c: In function ‘mm_iommu_get’: arch/powerpc/mm/mmu_context_iommu.c:193:42: error: ‘MIGRATE_CMA’ undeclared (first use in this function) if (get_pageblock_migratetype(page) == MIGRATE_CMA) { ^~~~~~~~~~~ Fix it by using the existing is_migrate_cma_page(), which evaulates to false when CMA=n. Fixes: 2e5bbb5461f1 ("KVM: PPC: Book3S HV: Migrate pinned pages out of CMA") Signed-off-by: Michael Ellerman <[email protected]>
2017-02-14powerpc/mm: Fix build break with RADIX=y & HUGETLBFS=nMichael Ellerman2-0/+8
If we enable RADIX but disable HUGETLBFS, the build breaks with: arch/powerpc/mm/pgtable-radix.c:557:7: error: implicit declaration of function 'pmd_huge' arch/powerpc/mm/pgtable-radix.c:588:7: error: implicit declaration of function 'pud_huge' Fix it by stubbing those functions when HUGETLBFS=n. Fixes: 4b5d62ca17a1 ("powerpc/mm: add radix__remove_section_mapping()") Signed-off-by: Michael Ellerman <[email protected]>
2017-02-10powerpc/pseries: Fix typo in parameter descriptionWei Yongjun1-1/+1
Fix typo in "hotplug_delay" parameter description. This allows modinfo to match the help text to the parameter. Signed-off-by: Wei Yongjun <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-10powerpc/kprobes: Remove kprobe_exceptions_notify()Naveen N. Rao1-9/+0
... as the generic weak variant will do. Acked-by: Masami Hiramatsu <[email protected]> Signed-off-by: Naveen N. Rao <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2017-02-10kprobes: Introduce weak variant of kprobe_exceptions_notify()Naveen N. Rao1-0/+6
kprobe_exceptions_notify() is not used on some of the architectures such as arm[64] and powerpc anymore. Introduce a weak variant for such architectures. Signed-off-by: Naveen N. Rao <[email protected]> Acked-by: Masami Hiramatsu <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
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