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* Merge tag 'powerpc-6.4-1' of ↵Linus Torvalds2023-04-2810-54/+23
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Add support for building the kernel using PC-relative addressing on Power10. - Allow HV KVM guests on Power10 to use prefixed instructions. - Unify support for the P2020 CPU (85xx) into a single machine description. - Always build the 64-bit kernel with 128-bit long double. - Drop support for several obsolete 2000's era development boards as identified by Paul Gortmaker. - A series fixing VFIO on Power since some generic changes. - Various other small features and fixes. Thanks to Alexey Kardashevskiy, Andrew Donnellan, Benjamin Gray, Bo Liu, Christophe Leroy, Dan Carpenter, David Binderman, Ira Weiny, Joel Stanley, Kajol Jain, Kautuk Consul, Liang He, Luis Chamberlain, Masahiro Yamada, Michael Neuling, Nathan Chancellor, Nathan Lynch, Nicholas Miehlbradt, Nicholas Piggin, Nick Desaulniers, Nysal Jan K.A, Pali Rohár, Paul Gortmaker, Paul Mackerras, Petr Vaněk, Randy Dunlap, Rob Herring, Sachin Sant, Sean Christopherson, Segher Boessenkool, and Timothy Pearson. * tag 'powerpc-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (156 commits) powerpc/64s: Disable pcrel code model on Clang powerpc: Fix merge conflict between pcrel and copy_thread changes powerpc/configs/powernv: Add IGB=y powerpc/configs/64s: Drop JFS Filesystem powerpc/configs/64s: Use EXT4 to mount EXT2 filesystems powerpc/configs: Make pseries_defconfig an alias for ppc64le_guest powerpc/configs: Make pseries_le an alias for ppc64le_guest powerpc/configs: Incorporate generic kvm_guest.config into guest configs powerpc/configs: Add IBMVETH=y and IBMVNIC=y to guest configs powerpc/configs/64s: Enable Device Mapper options powerpc/configs/64s: Enable PSTORE powerpc/configs/64s: Enable VLAN support powerpc/configs/64s: Enable BLK_DEV_NVME powerpc/configs/64s: Drop REISERFS powerpc/configs/64s: Use SHA512 for module signatures powerpc/configs/64s: Enable IO_STRICT_DEVMEM powerpc/configs/64s: Enable SCHEDSTATS powerpc/configs/64s: Enable DEBUG_VM & other options powerpc/configs/64s: Enable EMULATED_STATS powerpc/configs/64s: Enable KUNIT and most tests ...
| * powerpc: Use of_address_to_resource()Rob Herring2023-04-041-3/+3
| | | | | | | | | | | | | | | | | | | | | | Replace open coded reading of "reg" or of_get_address()/ of_translate_address() calls with a single call to of_address_to_resource(). Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230329220337.141295-1-robh@kernel.org
| * powerpc/fsl_rio: Use of_iomap()Rob Herring2023-04-041-20/+3
| | | | | | | | | | | | | | | | | | | | Replace of_address_to_resource()+ioremap() with a call to of_iomap() which does both of those steps. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230327223103.820229-1-robh@kernel.org
| * powerpc/xics: Use of_address_count()Rob Herring2023-04-041-12/+5
| | | | | | | | | | | | | | | | | | | | | | icp_native_init_one_node() only needs the number of entries in "reg". Replace the open coded "reg" parsing with of_address_count() to get the number of "reg" entries. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230327223056.820086-1-robh@kernel.org
| * powerpc: Use of_property_read_bool() for boolean propertiesRob Herring2023-03-306-15/+9
| | | | | | | | | | | | | | | | | | | | | | | | It is preferred to use typed property access functions (i.e. of_property_read_<type> functions) rather than low-level of_get_property/of_find_property functions for reading properties. Convert reading boolean properties to of_property_read_bool(). Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230310144659.1541127-1-robh@kernel.org
| * powerpc: Use of_property_present() for testing DT property presenceRob Herring2023-03-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is preferred to use typed property access functions (i.e. of_property_read_<type> functions) rather than low-level of_get_property/of_find_property functions for reading properties. As part of this, convert of_get_property/of_find_property calls to the recently added of_property_present() helper when we just want to test for presence of a property and nothing more. Signed-off-by: Rob Herring <robh@kernel.org> [mpe: Drop change in ppc4xx_probe_pci_bridge(), formatting] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230310144657.1541039-1-robh@kernel.org
| * powerpc/sysdev/tsi108: fix resource printk format warningsRandy Dunlap2023-03-301-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use "%pa" format specifier for resource_size_t to avoid a compiler printk format warning. arch/powerpc/sysdev/tsi108_pci.c: In function 'tsi108_setup_pci': include/linux/kern_levels.h:5:25: error: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'resource_size_t' Fixes: c4342ff92bed ("[POWERPC] Update mpc7448hpc2 board irq support using device tree") Fixes: 2b9d7467a6db ("[POWERPC] Add tsi108 pci and platform device data register function") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> [mpe: Use pr_info() and unsplit string] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230223070116.660-5-rdunlap@infradead.org
* | Merge tag 'driver-core-6.4-rc1' of ↵Linus Torvalds2023-04-271-5/+16
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the large set of driver core changes for 6.4-rc1. Once again, a busy development cycle, with lots of changes happening in the driver core in the quest to be able to move "struct bus" and "struct class" into read-only memory, a task now complete with these changes. This will make the future rust interactions with the driver core more "provably correct" as well as providing more obvious lifetime rules for all busses and classes in the kernel. The changes required for this did touch many individual classes and busses as many callbacks were changed to take const * parameters instead. All of these changes have been submitted to the various subsystem maintainers, giving them plenty of time to review, and most of them actually did so. Other than those changes, included in here are a small set of other things: - kobject logging improvements - cacheinfo improvements and updates - obligatory fw_devlink updates and fixes - documentation updates - device property cleanups and const * changes - firwmare loader dependency fixes. All of these have been in linux-next for a while with no reported problems" * tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (120 commits) device property: make device_property functions take const device * driver core: update comments in device_rename() driver core: Don't require dynamic_debug for initcall_debug probe timing firmware_loader: rework crypto dependencies firmware_loader: Strip off \n from customized path zram: fix up permission for the hot_add sysfs file cacheinfo: Add use_arch[|_cache]_info field/function arch_topology: Remove early cacheinfo error message if -ENOENT cacheinfo: Check cache properties are present in DT cacheinfo: Check sib_leaf in cache_leaves_are_shared() cacheinfo: Allow early level detection when DT/ACPI info is missing/broken cacheinfo: Add arm64 early level initializer implementation cacheinfo: Add arch specific early level initializer tty: make tty_class a static const structure driver core: class: remove struct class_interface * from callbacks driver core: class: mark the struct class in struct class_interface constant driver core: class: make class_register() take a const * driver core: class: mark class_release() as taking a const * driver core: remove incorrect comment for device_create* MIPS: vpe-cmp: remove module owner pointer from struct class usage. ...
| * | powerpc/fsl: fix compiler warning in fsl_wakeup_sys_init()Greg Kroah-Hartman2023-03-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit c93bd175414a ("powerpc/fsl: move to use bus_get_dev_root()") changed to use bus_get_dev_root() but didn't consider that the function can fail and return an uninitialized value of ret (hint, the function can never fail, but the compiler doesn't know that.) Fix this up by setting ret to -EINVAL just in case something really goes wrong with the call to bus_get_dev_root(). Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: linuxppc-dev@lists.ozlabs.org Fixes: c93bd175414a ("powerpc/fsl: move to use bus_get_dev_root()") Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/oe-kbuild-all/202303280045.4oaaezcn-lkp@intel.com/ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20230327181606.1424846-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | powerpc/fsl: move to use bus_get_dev_root()Greg Kroah-Hartman2023-03-171-4/+15
| |/ | | | | | | | | | | | | | | | | | | | | | | | | Direct access to the struct bus_type dev_root pointer is going away soon so replace that with a call to bus_get_dev_root() instead, which is what it is there for. Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20230313182918.1312597-15-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | gpiolib: split of_mm_gpio_chip out of linux/of_gpio.hArnd Bergmann2023-03-061-1/+1
|/ | | | | | | | | | | | | | This is a rarely used feature that has nothing to do with the client-side of_gpio.h. Split it out with a separate header file and Kconfig option so it can be removed on its own timeline aside from removing the of_gpio consumer interfaces. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
* powerpc/rtas: arch-wide function token lookup conversionsNathan Lynch2023-02-131-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the tokens for all implemented RTAS functions now available via rtas_function_token(), which is optimal and safe for arbitrary contexts, there is no need to use rtas_token() or cache its result. Most conversions are trivial, but a few are worth describing in more detail: * Error injection token comparisons for lockdown purposes are consolidated into a simple predicate: token_is_restricted_errinjct(). * A couple of special cases in block_rtas_call() do not use rtas_token() but perform string comparisons against names in the function table. These are converted to compare against token values instead, which is logically equivalent but less expensive. * The lookup for the ibm,os-term token can be deferred until needed, instead of caching it at boot to avoid device tree traversal during panic. * Since rtas_function_token() accesses a read-only data structure without taking any locks, xmon's lookup of set-indicator can be performed as needed instead of cached at startup. Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20230125-b4-powerpc-rtas-queue-v3-20-26929c8cce78@linux.ibm.com
* Merge tag 'powerpc-6.2-1' of ↵Linus Torvalds2022-12-194-5/+19
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Add powerpc qspinlock implementation optimised for large system scalability and paravirt. See the merge message for more details - Enable objtool to be built on powerpc to generate mcount locations - Use a temporary mm for code patching with the Radix MMU, so the writable mapping is restricted to the patching CPU - Add an option to build the 64-bit big-endian kernel with the ELFv2 ABI - Sanitise user registers on interrupt entry on 64-bit Book3S - Many other small features and fixes Thanks to Aboorva Devarajan, Angel Iglesias, Benjamin Gray, Bjorn Helgaas, Bo Liu, Chen Lifu, Christoph Hellwig, Christophe JAILLET, Christophe Leroy, Christopher M. Riedl, Colin Ian King, Deming Wang, Disha Goel, Dmitry Torokhov, Finn Thain, Geert Uytterhoeven, Gustavo A. R. Silva, Haowen Bai, Joel Stanley, Jordan Niethe, Julia Lawall, Kajol Jain, Laurent Dufour, Li zeming, Miaoqian Lin, Michael Jeanson, Nathan Lynch, Naveen N. Rao, Nayna Jain, Nicholas Miehlbradt, Nicholas Piggin, Pali Rohár, Randy Dunlap, Rohan McLure, Russell Currey, Sathvika Vasireddy, Shaomin Deng, Stephen Kitt, Stephen Rothwell, Thomas Weißschuh, Tiezhu Yang, Uwe Kleine-König, Xie Shaowen, Xiu Jianfeng, XueBing Chen, Yang Yingliang, Zhang Jiaming, ruanjinjie, Jessica Yu, and Wolfram Sang. * tag 'powerpc-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (181 commits) powerpc/code-patching: Fix oops with DEBUG_VM enabled powerpc/qspinlock: Fix 32-bit build powerpc/prom: Fix 32-bit build powerpc/rtas: mandate RTAS syscall filtering powerpc/rtas: define pr_fmt and convert printk call sites powerpc/rtas: clean up includes powerpc/rtas: clean up rtas_error_log_max initialization powerpc/pseries/eeh: use correct API for error log size powerpc/rtas: avoid scheduling in rtas_os_term() powerpc/rtas: avoid device tree lookups in rtas_os_term() powerpc/rtasd: use correct OF API for event scan rate powerpc/rtas: document rtas_call() powerpc/pseries: unregister VPA when hot unplugging a CPU powerpc/pseries: reset the RCU watchdogs after a LPM powerpc: Take in account addition CPU node when building kexec FDT powerpc: export the CPU node count powerpc/cpuidle: Set CPUIDLE_FLAG_POLLING for snooze state powerpc/dts/fsl: Fix pca954x i2c-mux node names cxl: Remove unnecessary cxl_pci_window_alignment() selftests/powerpc: Fix resource leaks ...
| * powerpc/fsl-pci: Choose PCI host bridge with alias pci0 as the primaryPali Rohár2022-11-301-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If there's no PCI host bridge with ISA then check for PCI host bridge with alias "pci0" (first PCI host bridge) and if it exists then choose it as the primary PCI host bridge. This makes choice of primary PCI host bridge more stable across boots and updates as the last fallback candidate for primary PCI host bridge (if there is no choice) is selected arbitrary. Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220820123327.20551-1-pali@kernel.org
| * powerpc/mpic_msgr: fix cast removes address space of expression warningsruanjinjie2022-11-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When build Linux kernel, encounter the following warnings: ./arch/powerpc/sysdev/mpic_msgr.c:230:38: warning: cast removes address space '__iomem' of expression ./arch/powerpc/sysdev/mpic_msgr.c:230:27: warning: incorrect type in assignment (different address spaces) The data type of msgr->mer and msgr->base are 'u32 __iomem *', but converted to 'u32 *' and 'u8 *' directly and cause above warnings, now instead of using a type cast, change the size of the pointer offset to fix these warnings. Signed-off-by: ruanjinjie <ruanjinjie@huawei.com> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221019063414.3758087-1-ruanjinjie@huawei.com
| * powerpc/xive: add missing iounmap() in error path in ↵Yang Yingliang2022-11-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | xive_spapr_populate_irq_data() If remapping 'data->trig_page' fails, the 'data->eoi_mmio' need be unmapped before returning from xive_spapr_populate_irq_data(). Fixes: eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221017032333.1852406-1-yangyingliang@huawei.com
| * powerpc/sysdev: Remove some duplicate prefix in some messagesChristophe JAILLET2022-11-241-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At the beginning of the file, we have: #define pr_fmt(fmt) "xive: " fmt So, there is no need to duplicate "XIVE:" in debug and error messages. For the records, these useless prefix have been added in commit 5af50993850a ("KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/7b8b5915a2c7c1616b33e8433ebe0a0bf07070a2.1665312579.git.christophe.jaillet@wanadoo.fr
* | powerpc/msi: Fix deassociation of MSI descriptorsMarc Zyngier2022-12-172-0/+2
|/ | | | | | | | | | | | | | | | | | | | | | Since 2f2940d16823 ("genirq/msi: Remove filter from msi_free_descs_free_range()"), the core MSI code relies on the msi_desc->irq field to have been cleared before the descriptor can be freed, as it indicates that there is no association with a device anymore. The irq domain code provides this guarantee, and so does s390, which is one of the two architectures not using irq domains for MSIs. Powerpc, however, is missing this particular requirements, leading in a splat and leaked MSI descriptors. Adding the now required irq reset to the handful of powerpc backends that implement MSIs fixes that particular problem. Reported-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/70dab88e-6119-0c12-7c6a-61bcbe239f66@roeck-us.net
* powerpc: Change CONFIG_E500 to CONFIG_PPC_E500Christophe Leroy2022-09-262-2/+2
| | | | | | | | | | | | | It will be used outside arch/powerpc, make it clear its a powerpc configuration item. And we already have CONFIG_PPC_E500MC, so that will make it more consistent. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/e63b22083c11c4300f4a82d3123a46e5fdd54fa6.1663606876.git.christophe.leroy@csgroup.eu
* Revert "powerpc/rtas: Implement reentrant rtas call"Nathan Lynch2022-09-141-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At the time this was submitted by Leonardo, I confirmed -- or thought I had confirmed -- with PowerVM partition firmware development that the following RTAS functions: - ibm,get-xive - ibm,int-off - ibm,int-on - ibm,set-xive were safe to call on multiple CPUs simultaneously, not only with respect to themselves as indicated by PAPR, but with arbitrary other RTAS calls: https://lore.kernel.org/linuxppc-dev/875zcy2v8o.fsf@linux.ibm.com/ Recent discussion with firmware development makes it clear that this is not true, and that the code in commit b664db8e3f97 ("powerpc/rtas: Implement reentrant rtas call") is unsafe, likely explaining several strange bugs we've seen in internal testing involving DLPAR and LPM. These scenarios use ibm,configure-connector, whose internal state can be corrupted by the concurrent use of the "reentrant" functions, leading to symptoms like endless busy statuses from RTAS. Fixes: b664db8e3f97 ("powerpc/rtas: Implement reentrant rtas call") Cc: stable@vger.kernel.org # v5.8+ Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com> Reviewed-by: Laurent Dufour <laurent.dufour@fr.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220907220111.223267-1-nathanl@linux.ibm.com
* powerpc/xive: fix repeated words in commentsJilin Yuan2022-09-061-1/+1
| | | | | | | | | Delete the redundant word 'set'. Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220831004706.35280-1-yuanjilin@cdjrlc.com
* powerpc/fsl_pci: Remove of_node_put() when reference escaped outLiang He2022-09-051-1/+0
| | | | | | | | | | | In fsl_pci_assign_primary(), we should remove the of_node_put() when breaking out of the for_each_matching_node() as the 'np' is escaped out by global 'fsl_pci_primary'. Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220720124557.1256243-1-windhl@126.com
* powerpc/sysdev/fsl_msi: Add missing of_node_put()Liang He2022-09-051-0/+2
| | | | | | | | | | | In fsl_setup_msi_irqs(), use of_node_put() to drop the reference returned by of_parse_phandle(). Fixes: 895d603f945ba ("powerpc/fsl_msi: add support for the fsl, msi property in PCI nodes") Co-authored-by: Miaoqian Lin <linmq006@gmail.com> Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220704145233.278539-1-windhl@126.com
* powerpc/sysdev: Add missing of_node_put()sLiang He2022-09-053-7/+23
| | | | | | | | | | | Add of_node_put() in various paths to drop references once they are no longer needed. Signed-off-by: Liang He <windhl@126.com> [mpe: Rewrite change log] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220620130221.4073228-1-windhl@126.com
* powerpc/xive: Fix refcount leak in xive_get_max_prioMiaoqian Lin2022-08-011-0/+1
| | | | | | | | | | | | of_find_node_by_path() returns a node pointer with refcount incremented, we should use of_node_put() on it when done. Add missing of_node_put() to avoid refcount leak. Fixes: eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220605053225.56125-1-linmq006@gmail.com
* powerpc/sysdev: Fix comment typoJason Wang2022-07-281-1/+1
| | | | | | | | | The double `is' is duplicated in line 110, remove one. Signed-off-by: Jason Wang <wangborong@cdjrlc.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220715035250.5978-1-wangborong@cdjrlc.com
* powerpc: Remove asm/prom.h from asm/mpc52xx.h and asm/pci.hChristophe Leroy2022-07-281-0/+2
| | | | | | | | | | | | asm/pci.h and asm/mpc52xx.h don't need asm/prom.h Declare struct device_node locally to avoid including of.h Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> [mpe: Add missing include of prom.h to of_rtc.c] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/cf5243343e2364c2b40f22ee5ad9a6e2453d1121.1657264228.git.christophe.leroy@csgroup.eu
* powerpc/44x: Fix build failure with GCC 12 (unrecognized opcode: `wrteei')Christophe Leroy2022-07-271-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Building ppc40x_defconfig leads to following error CC arch/powerpc/kernel/idle.o {standard input}: Assembler messages: {standard input}:67: Error: unrecognized opcode: `wrteei' {standard input}:78: Error: unrecognized opcode: `wrteei' Add -mcpu=440 by default and alternatively 464 and 476. Once that's done, -mcpu=powerpc is only for book3s/32 now. But then comes CC arch/powerpc/kernel/io.o {standard input}: Assembler messages: {standard input}:198: Error: unrecognized opcode: `eieio' {standard input}:230: Error: unrecognized opcode: `eieio' {standard input}:245: Error: unrecognized opcode: `eieio' {standard input}:254: Error: unrecognized opcode: `eieio' {standard input}:273: Error: unrecognized opcode: `eieio' {standard input}:396: Error: unrecognized opcode: `eieio' {standard input}:404: Error: unrecognized opcode: `eieio' {standard input}:423: Error: unrecognized opcode: `eieio' {standard input}:512: Error: unrecognized opcode: `eieio' {standard input}:520: Error: unrecognized opcode: `eieio' {standard input}:539: Error: unrecognized opcode: `eieio' {standard input}:628: Error: unrecognized opcode: `eieio' {standard input}:636: Error: unrecognized opcode: `eieio' {standard input}:655: Error: unrecognized opcode: `eieio' Fix it by replacing eieio by mbar on booke. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/b0d982e223314ed82ab959f5d4ad2c4c00bedb99.1657549153.git.christophe.leroy@csgroup.eu
* powerpc/fsl-pci: Fix Class Code of PCIe Root PortPali Rohár2022-07-272-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By default old pre-3.0 Freescale PCIe controllers reports invalid PCI Class Code 0x0b20 for PCIe Root Port. It can be seen by lspci -b output on P2020 board which has this pre-3.0 controller: $ lspci -bvnn 00:00.0 Power PC [0b20]: Freescale Semiconductor Inc P2020E [1957:0070] (rev 21) !!! Invalid class 0b20 for header type 01 Capabilities: [4c] Express Root Port (Slot-), MSI 00 Fix this issue by programming correct PCI Class Code 0x0604 for PCIe Root Port to the Freescale specific PCIe register 0x474. With this change lspci -b output is: $ lspci -bvnn 00:00.0 PCI bridge [0604]: Freescale Semiconductor Inc P2020E [1957:0070] (rev 21) (prog-if 00 [Normal decode]) Capabilities: [4c] Express Root Port (Slot-), MSI 00 Without any "Invalid class" error. So class code was properly reflected into standard (read-only) PCI register 0x08. Same fix is already implemented in U-Boot pcie_fsl.c driver in commit: http://source.denx.de/u-boot/u-boot/-/commit/d18d06ac35229345a0af80977a408cfbe1d1015b Fix activated by U-Boot stay active also after booting Linux kernel. But boards which use older U-Boot version without that fix are affected and still require this fix. So implement this class code fix also in kernel fsl_pci.c driver. Cc: stable@vger.kernel.org Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220706101043.4867-1-pali@kernel.org
* Merge branch 'fixes' into nextMichael Ellerman2022-07-091-2/+3
|\ | | | | | | | | | | | | | | Merge our fixes branch. In particular this brings in commit 986481618023 ("powerpc/book3e: Fix PUD allocation size in map_kernel_page()") which fixes a build failure in next, because commit 2db2008e6363 ("powerpc/64e: Rewrite p4d_populate() as a static inline function") depends on it.
| * powerpc/xive/spapr: correct bitmap allocation sizeNathan Lynch2022-06-241-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kasan detects access beyond the end of the xibm->bitmap allocation: BUG: KASAN: slab-out-of-bounds in _find_first_zero_bit+0x40/0x140 Read of size 8 at addr c00000001d1d0118 by task swapper/0/1 CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-rc2-00001-g90df023b36dd #28 Call Trace: [c00000001d98f770] [c0000000012baab8] dump_stack_lvl+0xac/0x108 (unreliable) [c00000001d98f7b0] [c00000000068faac] print_report+0x37c/0x710 [c00000001d98f880] [c0000000006902c0] kasan_report+0x110/0x354 [c00000001d98f950] [c000000000692324] __asan_load8+0xa4/0xe0 [c00000001d98f970] [c0000000011c6ed0] _find_first_zero_bit+0x40/0x140 [c00000001d98f9b0] [c0000000000dbfbc] xive_spapr_get_ipi+0xcc/0x260 [c00000001d98fa70] [c0000000000d6d28] xive_setup_cpu_ipi+0x1e8/0x450 [c00000001d98fb30] [c000000004032a20] pSeries_smp_probe+0x5c/0x118 [c00000001d98fb60] [c000000004018b44] smp_prepare_cpus+0x944/0x9ac [c00000001d98fc90] [c000000004009f9c] kernel_init_freeable+0x2d4/0x640 [c00000001d98fd90] [c0000000000131e8] kernel_init+0x28/0x1d0 [c00000001d98fe10] [c00000000000cd54] ret_from_kernel_thread+0x5c/0x64 Allocated by task 0: kasan_save_stack+0x34/0x70 __kasan_kmalloc+0xb4/0xf0 __kmalloc+0x268/0x540 xive_spapr_init+0x4d0/0x77c pseries_init_irq+0x40/0x27c init_IRQ+0x44/0x84 start_kernel+0x2a4/0x538 start_here_common+0x1c/0x20 The buggy address belongs to the object at c00000001d1d0118 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 0 bytes inside of 8-byte region [c00000001d1d0118, c00000001d1d0120) The buggy address belongs to the physical page: page:c00c000000074740 refcount:1 mapcount:0 mapping:0000000000000000 index:0xc00000001d1d0558 pfn:0x1d1d flags: 0x7ffff000000200(slab|node=0|zone=0|lastcpupid=0x7ffff) raw: 007ffff000000200 c00000001d0003c8 c00000001d0003c8 c00000001d010480 raw: c00000001d1d0558 0000000001e1000a 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: c00000001d1d0000: fc 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc c00000001d1d0080: fc fc 00 fc fc fc fc fc fc fc fc fc fc fc fc fc >c00000001d1d0100: fc fc fc 02 fc fc fc fc fc fc fc fc fc fc fc fc ^ c00000001d1d0180: fc fc fc fc 04 fc fc fc fc fc fc fc fc fc fc fc c00000001d1d0200: fc fc fc fc fc 04 fc fc fc fc fc fc fc fc fc fc This happens because the allocation uses the wrong unit (bits) when it should pass (BITS_TO_LONGS(count) * sizeof(long)) or equivalent. With small numbers of bits, the allocated object can be smaller than sizeof(long), which results in invalid accesses. Use bitmap_zalloc() to allocate and initialize the irq bitmap, paired with bitmap_free() for consistency. Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220623182509.3985625-1-nathanl@linux.ibm.com
* | powerpc/mpc5xxx: Switch mpc5xxx_get_bus_frequency() to use fwnodeAndy Shevchenko2022-06-221-19/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Switch mpc5xxx_get_bus_frequency() to use fwnode in order to help cleaning up other parts of the kernel from OF specific code. No functional change intended. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Chris Packham <chris.packham@alliedtelesis.co.nz> # for i2c-mpc Acked-by: Wolfram Sang <wsa@kernel.org> # for the I2C part Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for mscan/mpc5xxx_can Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220507100147.5802-2-andriy.shevchenko@linux.intel.com
* | powerpc: Don't include asm/setup.h in asm/machdep.hChristophe Leroy2022-06-201-0/+1
|/ | | | | | | | | | | | | asm/machdep.h doesn't need asm/setup.h Remove it. Add it directly in files that needs it. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/3b1dfb19a2c3265fb4abc2bfc7b6eae9261a998b.1654966508.git.christophe.leroy@csgroup.eu
* powerpc/xics: Include missing headerChristophe Leroy2022-05-241-0/+1
| | | | | | | | | | Include of_adresses.h to get of_iomap() prototype. Fixes: 86c38fec69a4 ("powerpc: Remove asm/prom.h from all files that don't need it") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/f20a14be1a29fa0a9ebcfc5ebf05eb69c5120d10.1653370502.git.christophe.leroy@csgroup.eu
* powerpc/iommu: Add missing of_node_put in iommu_init_early_dartPeng Wu2022-05-221-2/+4
| | | | | | | | | | | The device_node pointer is returned by of_find_compatible_node with refcount incremented. We should use of_node_put() to avoid the refcount leak. Signed-off-by: Peng Wu <wupeng58@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220425081245.21705-1-wupeng58@huawei.com
* powerpc/fsl_rio: Fix refcount leak in fsl_rio_setupMiaoqian Lin2022-05-221-0/+2
| | | | | | | | | | | | of_parse_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak. Fixes: abc3aeae3aaa ("fsl-rio: Add two ports and rapidio message units support") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220512123724.62931-1-linmq006@gmail.com
* powerpc/xive: Fix refcount leak in xive_spapr_initMiaoqian Lin2022-05-221-2/+5
| | | | | | | | | | | | | of_find_compatible_node() returns a node pointer with refcount incremented, we should use of_node_put() on it when done. Add missing of_node_put() to avoid refcount leak. Fixes: eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220512090535.33397-1-linmq006@gmail.com
* powerpc/85xx: Remove FSL_85XX_CACHE_SRAMChristophe Leroy2022-05-224-452/+0
| | | | | | | | | | | | | | CONFIG_FSL_85XX_CACHE_SRAM is an option that is not user selectable and which is not selected by any driver nor any defconfig. Remove it and all associated code. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/9949813a6b758903b7bee910f798ba2ca82ff8ee.1648720908.git.christophe.leroy@csgroup.eu
* powerpc/xics: fix refcount leak in icp_opal_init()Lv Ruyi2022-05-221-0/+1
| | | | | | | | | | | The of_find_compatible_node() function returns a node pointer with refcount incremented, use of_node_put() on it when done. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220402013419.2410298-1-lv.ruyi@zte.com.cn
* powerpc/kasan: Disable address sanitization in kexec pathsDaniel Axtens2022-05-222-4/+4
| | | | | | | | | | | | | | | | | The kexec code paths involve code that necessarily run in real mode, as CPUs are disabled and control is transferred to the new kernel. Disable address sanitization for the kexec code and the functions called in real mode on CPUs being disabled. [paulus@ozlabs.org: combined a few work-in-progress commits of Daniel's and wrote the commit message.] Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Paul Mackerras <paulus@ozlabs.org> [mpe: Move pseries_machine_kexec() into kexec.c so setup.c can be instrumented] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/YoTFSQ2TUSEaDdVC@cleo
* powerpc: Add missing headersChristophe Leroy2022-05-0825-22/+40
| | | | | | | | | | | | | Don't inherit headers "by chances" from asm/prom.h, asm/mpc52xx.h, asm/pci.h etc... Include the needed headers, and remove asm/prom.h when it was needed exclusively for pulling necessary headers. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/be8bdc934d152a7d8ee8d1a840d5596e2f7d85e0.1646767214.git.christophe.leroy@csgroup.eu
* powerpc: Remove asm/prom.h from all files that don't need itChristophe Leroy2022-05-085-5/+0
| | | | | | | | | | | Several files include asm/prom.h for no reason. Clean it up. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> [mpe: Drop change to prom_parse.c as reported by lkp@intel.com] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/7c9b8fda63dcf63e1b28f43e7ebdb95182cbc286.1646767214.git.christophe.leroy@csgroup.eu
* powerpc: fix typos in commentsJulia Lawall2022-05-058-8/+8
| | | | | | | | | | | Various spelling mistakes in comments. Detected with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Reviewed-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220430185654.5855-1-Julia.Lawall@inria.fr
* Merge tag 'pci-v5.18-changes' of ↵Linus Torvalds2022-03-251-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull pci updates from Bjorn Helgaas: "Enumeration: - Move the VGA arbiter from drivers/gpu to drivers/pci because it's PCI-specific, not GPU-specific (Bjorn Helgaas) - Select the default VGA device consistently whether it's enumerated before or after VGA arbiter init, which fixes arches that enumerate PCI devices late (Huacai Chen) Resource management: - Support BAR sizes up to 8TB (Dongdong Liu) PCIe native device hotplug: - Fix "Command Completed" tracking to avoid spurious timouts when powering off empty slots (Liguang Zhang) - Quirk Qualcomm devices that don't implement Command Completed correctly, again to avoid spurious timeouts (Manivannan Sadhasivam) Peer-to-peer DMA: - Add Intel 3rd Gen Intel Xeon Scalable Processors to whitelist (Michael J. Ruhl) APM X-Gene PCIe controller driver: - Revert generic DT parsing changes that broke some machines in the field (Marc Zyngier) Freescale i.MX6 PCIe controller driver: - Allow controller probe to succeed even when no devices currently present to allow hot-add later (Fabio Estevam) - Enable power management on i.MX6QP (Richard Zhu) - Assert CLKREQ# on i.MX8MM so enumeration doesn't hang when no device is connected (Richard Zhu) Marvell Aardvark PCIe controller driver: - Fix MSI and MSI-X support (Marek Behún, Pali Rohár) - Add support for ERR and PME interrupts (Pali Rohár) Marvell MVEBU PCIe controller driver: - Add DT binding and support for "num-lanes" (Pali Rohár) - Add support for INTx interrupts (Pali Rohár) Microsoft Hyper-V host bridge driver: - Avoid unnecessary hypercalls when unmasking IRQs on ARM64 (Boqun Feng) Qualcomm PCIe controller driver: - Add SM8450 DT binding and driver support (Dmitry Baryshkov) Renesas R-Car PCIe controller driver: - Help the controller get to the L1 state since the hardware can't do it on its own (Marek Vasut) - Return PCI_ERROR_RESPONSE (~0) for reads that fail on PCIe (Marek Vasut) SiFive FU740 PCIe controller driver: - Drop redundant '-gpios' from DT GPIO lookup (Ben Dooks) - Force 2.5GT/s for initial device probe (Ben Dooks) Socionext UniPhier Pro5 controller driver: - Add NX1 DT binding and driver support (Kunihiko Hayashi) Synopsys DesignWare PCIe controller driver: - Restore MSI configuration so MSI works after resume (Jisheng Zhang)" * tag 'pci-v5.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (94 commits) x86/PCI: Add #includes to asm/pci_x86.h PCI: ibmphp: Remove unused assignments PCI: cpqphp: Remove unused assignments PCI: fu740: Remove unused assignments PCI: kirin: Remove unused assignments PCI: Remove unused assignments PCI: Declare pci_filp_private only when HAVE_PCI_MMAP PCI: Avoid broken MSI on SB600 USB devices PCI: fu740: Force 2.5GT/s for initial device probe PCI: xgene: Revert "PCI: xgene: Fix IB window setup" PCI: xgene: Revert "PCI: xgene: Use inbound resources for setup" PCI: imx6: Assert i.MX8MM CLKREQ# even if no device present PCI: imx6: Invoke the PHY exit function after PHY power off PCI: rcar: Use PCI_SET_ERROR_RESPONSE after read which triggered an exception PCI: rcar: Finish transition to L1 state in rcar_pcie_config_access() PCI: dwc: Restore MSI Receiver mask during resume PCI: fu740: Drop redundant '-gpios' from DT GPIO lookup PCI/VGA: Replace full MIT license text with SPDX identifier PCI/VGA: Use unsigned format string to print lock counts PCI/VGA: Log bridge control messages when adding devices ...
| * PCI: Add defines for normal and subtractive PCI bridgesPali Rohár2022-02-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add these PCI class codes to pci_ids.h: PCI_CLASS_BRIDGE_PCI_NORMAL PCI_CLASS_BRIDGE_PCI_SUBTRACTIVE Use these defines in all kernel code for describing PCI class codes for normal and subtractive PCI bridges. [bhelgaas: similar change in pci-mvebu.c] Link: https://lore.kernel.org/r/20220214114109.26809-1-pali@kernel.org Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | powerpc/xive: fix return value of __setup handlerRandy Dunlap2022-03-161-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __setup() handlers should return 1 to obsolete_checksetup() in init/main.c to indicate that the boot option has been handled. A return of 0 causes the boot option/value to be listed as an Unknown kernel parameter and added to init's (limited) argument or environment strings. Also, error return codes don't mean anything to obsolete_checksetup() -- only non-zero (usually 1) or zero. So return 1 from xive_off() and xive_store_eoi_cmdline(). Fixes: 243e25112d06 ("powerpc/xive: Native exploitation of the XIVE interrupt controller") Fixes: c21ee04f11ae ("powerpc/xive: Add a kernel parameter for StoreEOI") [lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@omprussia.ru] Reported-by: Igor Zhbanov <i.zhbanov@omprussia.ru>: Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220313065936.4363-1-rdunlap@infradead.org
* | powerpc/sysdev: fix incorrect use to determine if list is emptyJakob Koschel2022-03-081-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'gtm' will *always* be set by list_for_each_entry(). It is incorrect to assume that the iterator value will be NULL if the list is empty. Instead of checking the pointer it should be checked if the list is empty. Fixes: 83ff9dcf375c ("powerpc/sysdev: implement FSL GTM support") Signed-off-by: Jakob Koschel <jakobkoschel@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220228142434.576226-1-jakobkoschel@gmail.com
* | powerpc/corenet: Change criteria to set MPIC_ENABLE_COREINTChristophe Leroy2022-02-071-3/+1
| | | | | | | | | | | | | | | | | | Don't use ppc_md function comparison. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/c8ef82ee5f2713f4c36eb5d2d49b0905c7472801.1630667612.git.christophe.leroy@csgroup.eu
* | powerpc/xive: Add some error handling code to 'xive_spapr_init()'Christophe JAILLET2022-02-031-8/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 'xive_irq_bitmap_add()' can return -ENOMEM. In this case, we should free the memory already allocated and return 'false' to the caller. Also add an error path which undoes the 'tima = ioremap(...)' Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/564998101804886b151235c8a9f93020923bfd2c.1643718324.git.christophe.jaillet@wanadoo.fr
* | powerpc/xive: Export XIVE IPI information for online-only processors.Sachin Sant2022-01-311-1/+1
|/ | | | | | | | | | | | | | | | Cédric pointed out that XIVE IPI information exported via sysfs (debug/powerpc/xive) display empty lines for processors which are not online. Switch to using for_each_online_cpu() so that information is displayed for online-only processors. Reported-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Sachin Sant <sachinp@linux.ibm.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/164146703333.19039.10920919226094771665.sendpatchset@MacBook-Pro.local
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