- 26 Nov, 2018 15 commits
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Christophe Leroy authored
Today we have: config PPC_BOOK3S_32 bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx" [depends on PPC32 within a choice] config PPC_BOOK3S def_bool y depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 config PPC_STD_MMU def_bool y depends on PPC_BOOK3S config PPC_STD_MMU_32 def_bool y depends on PPC_STD_MMU && PPC32 PPC_STD_MMU_32 is therefore redundant with PPC_BOOK3S_32. In order to make the code clearer, lets use preferably PPC_BOOK3S_32. This will allow to remove CONFIG_PPC_STD_MMU_32 in a later patch. Signed-off-by:Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au>
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Christophe Leroy authored
asm/book3s/32/pgtable.h is only included when CONFIG_PPC_BOOK3S_32 is set. Whenever CONFIG_PPC_BOOK3S_32 is set, CONFIG_PPC_STD_MMU_32 is set as well. This patch removes useless CONFIG_PPC_STD_MMU_32 #ifdefs Signed-off-by:
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Christophe Leroy authored
CONFIG_6xx is not used anymore. Remove it. Signed-off-by:
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Christophe Leroy authored
Today we have: config PPC_BOOK3S_32 bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx" [depends on PPC32 within a choice] config PPC_BOOK3S def_bool y depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 config 6xx def_bool y depends on PPC32 && PPC_BOOK3S 6xx is therefore redundant with PPC_BOOK3S_32. In order to make the code clearer, lets use preferably PPC_BOOK3S_32. This will allow to remove CONFIG_6xx in a later patch. Signed-off-by:
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Christophe Leroy authored
Today, powerpc has three CONFIG labels which means exactly the same: - CONFIG_6xx - CONFIG_PPC_BOOK3S_32 - CONFIG_PPC_STD_MMU_32 By consistency with PPC64, CONFIG_PPC_BOOK3S_32 is the preferred one. Using a label with includes _PPC_ also makes it clearer that it is linked to powerpc. In preparation of the removal of CONFIG_6xx, this patch replaces it by CONFIG_PPC_BOOK3S_32 Signed-off-by:
Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by:
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Rob Herring authored
Remove directly accessing device_node.type pointer and use the accessors instead. This will eventually allow removing the type pointer. Signed-off-by:
Rob Herring <robh@kernel.org> Acked-by:
Andrew Donnellan <andrew.donnellan@au1.ibm.com> Signed-off-by:
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Rob Herring authored
Remove directly accessing device_node.type pointer and use the accessors instead. This will eventually allow removing the type pointer. Signed-off-by:
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Rob Herring authored
In preparation to remove the node name pointer from struct device_node, convert printf users to use the %pOFn format specifier. Convert the open coded iterating thru child nodes to for_each_child_of_node() while we're here. Signed-off-by:
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Rob Herring authored
Remove directly accessing device_node.type pointer and use the accessors instead. This will eventually allow removing the type pointer. Replace the open coded iterating over child nodes with for_each_child_of_node() while we're here. Signed-off-by:
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Rob Herring authored
Remove directly accessing device_node.type pointer and use the accessors instead. This will eventually allow removing the type pointer. In the process, the of_stdout pointer can be used instead of finding the stdout node again. Signed-off-by:
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Satheesh Rajendran authored
This patch adds new defconfig options for powerpc KVM guest and guest.config with additional config symbols enabled, which is to build kernel to boot without initramfs and can be used as place holder for guest specific additional config symbols in future. Signed-off-by:
Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Signed-off-by:
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Satheesh Rajendran authored
This patch adds missing config symbols for ppc64_defconfig to enable cgroups, memhotplug, numa balancing and XFS in core kernel image. Signed-off-by:
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Satheesh Rajendran authored
CONFIG_NR_CPUS is not set in ppc64_defconfig, So it gets default of 32 which is quite small for modern powerpc systems. Instead set a default of 2048 like other powerpc defconfigs. Signed-off-by:
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Michael Ellerman authored
Update ppc64_defconfig with savedefconfig. No symbols are added or removed, this is 100% movement. Signed-off-by: -
Michael Ellerman authored
In commit 539df7fc ("powerpc/configs: Enable function trace by default") we added: CONFIG_FTRACE=y CONFIG_FUNCTION_TRACER=y CONFIG_FUNCTION_GRAPH_TRACER=y To ppc64_defconfig, powernv_defconfig and pseries_defconfig. But only CONFIG_FUNCTION_TRACER=y is required, CONFIG_FTRACE is default y if DEBUG_KERNEL is enabled, which we have. And then CONFIG_FUNCTION_GRAPH_TRACER is default y when CONFIG_FUNCTION_TRACER is enabled. The extra symbols were already removed from powernv_defconfig in commit 9a018fb1 ("powerpc/config: powernv_defconfig updates"). Signed-off-by:
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- 25 Nov, 2018 22 commits
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Sabyasachi Gupta authored
Replace dma_alloc_coherent() + memset() with dma_zalloc_coherent(). Signed-off-by:
Sabyasachi Gupta <sabyasachi.linux@gmail.com> Signed-off-by:
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Yue Haibing authored
There is no need to have the 'void __iomem *cpld_base' variable static since new value always be assigned before use it. Signed-off-by:
Yue Haibing <yuehaibing@huawei.com> Signed-off-by:
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YueHaibing authored
There is no need to have the 'intoffset' variable static since new value always be assigned before use it. Signed-off-by:
Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by:
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Geert Uytterhoeven authored
Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
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Yangtao Li authored
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Signed-off-by:
Yangtao Li <tiny.windzz@gmail.com> Reviewed-by:
David Gibson <david@gibson.dropbear.id.au> Signed-off-by:
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Yangtao Li authored
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Signed-off-by:
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Daniel Axtens authored
When compiled for 64-bit, the PD_HUGE constant is a 64-bit integer. Mark it as an unsigned long. This squashes over a thousand sparse warnings on my minimal T4240RDB (e6500, ppc64be) config, of the following 2 forms: arch/powerpc/include/asm/hugetlb.h:52:49: warning: constant 0x8000000000000000 is so big it is unsigned long arch/powerpc/include/asm/nohash/pgtable.h:269:49: warning: constant 0x8000000000000000 is so big it is unsigned long Signed-off-by:
Daniel Axtens <dja@axtens.net> Signed-off-by:
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Mathieu Malaterre authored
Type qualifier on return type is ignored. Remove warning in W=1: arch/powerpc/include/asm/book3s/64/pgtable.h:1268:25: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] Signed-off-by:
Mathieu Malaterre <malat@debian.org> Signed-off-by:
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Mathieu Malaterre authored
When both `CONFIG_LD_DEAD_CODE_DATA_ELIMINATION=y` and `CONFIG_UBSAN=y` are set, link step typically produce numberous warnings about orphan section: + powerpc-linux-gnu-ld -EB -m elf32ppc -Bstatic --orphan-handling=warn --build-id --gc-sections -X -o .tmp_vmlinux1 -T ./arch/powerpc/kernel/vmlinux.lds --who le-archive built-in.a --no-whole-archive --start-group lib/lib.a --end-group powerpc-linux-gnu-ld: warning: orphan section `.data..Lubsan_data393' from `init/main.o' being placed in section `.data..Lubsan_data393'. powerpc-linux-gnu-ld: warning: orphan section `.data..Lubsan_data394' from `init/main.o' being placed in section `.data..Lubsan_data394'. ... powerpc-linux-gnu-ld: warning: orphan section `.data..Lubsan_type11' from `init/main.o' being placed in section `.data..Lubsan_type11'. powerpc-linux-gnu-ld: warning: orphan section `.data..Lubsan_type12' from `init/main.o' being placed in section `.data..Lubsan_type12'. ... This commit remove those warnings produced at W=1. Link: https://www.mail-archive.com/linuxppc-dev@lists.ozlabs.org/msg135407.htmlSuggested-by:
Nicholas Piggin <npiggin@gmail.com> Signed-off-by:
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Breno Leitao authored
Current core-pkey selftest fails if the test runs without privileges to write into the core pattern file (/proc/sys/kernel/core_pattern). This causes the test to fail and give the impression that the subsystem being tested is broken, when, in fact, the test is being executed without the proper privileges. This is the current error: test: core_pkey tags: git_version:v4.19-3-g9e3363be9bce-dirty Error writing to core_pattern file: Permission denied failure: core_pkey This patch simply skips this test if it runs without the proper privileges, avoiding this undesired failure. CC: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> CC: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by:
Breno Leitao <leitao@debian.org> Reviewed-by:
Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by:
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Breno Leitao authored
This patch creates a new macro that skips a test and prints a message to stderr. This is useful to give an idea why the tests is being skipped, other than just skipping the test blindly. Signed-off-by:
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Breno Leitao authored
Some ptrace selftests are passing input operands using a constraint that can allocate any register for the operand, and using these registers on load/store operations. If the register allocated by the compiler happens to be zero (r0), it might cause an invalid memory address access, since load and store operations consider the content of 0x0 address if the base register is r0, instead of the content of the r0 register. For example: r1 := 0xdeadbeef r0 := 0xdeadbeef ld r2, 0(1) /* will load into r2 the content of r1 address */ ld r2, 0(0) /* will load into r2 the content of 0x0 */ In order to avoid this possible problem, the inline assembly constraint should be aware that these registers will be used as a base register, thus, r0 should not be allocated. Other than that, this patch removes inline assembly operands that are not used by the tests. Signed-off-by:
Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by:
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Breno Leitao authored
Function huge_ptep_set_access_flags() has the 'extern' keyword in the function definition and also in the function declaration. This causes a warning in 'sparse' since the 'extern' storage class should not be used in the function definition. arch/powerpc/mm/pgtable.c:232:12: warning: function 'huge_ptep_set_access_flags' with external linkage has definition This patch removes the keyword from the definition part. It also removes the extern keyword from the declaration part, since checkpatch --strict complains about it. Suggested-by:
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Breno Leitao authored
Sparse tool is showing some warnings on pkeys.c file, mainly related to storage class identifiers. There are static variables and functions not declared as such. The same thing happens with an extern function, which misses the header inclusion. arch/powerpc/mm/pkeys.c:14:6: warning: symbol 'pkey_execute_disable_supported' was not declared. Should it be static? arch/powerpc/mm/pkeys.c:16:6: warning: symbol 'pkeys_devtree_defined' was not declared. Should it be static? arch/powerpc/mm/pkeys.c:19:6: warning: symbol 'pkey_amr_mask' was not declared. Should it be static? arch/powerpc/mm/pkeys.c:20:6: warning: symbol 'pkey_iamr_mask' was not declared. Should it be static? arch/powerpc/mm/pkeys.c:21:6: warning: symbol 'pkey_uamor_mask' was not declared. Should it be static? arch/powerpc/mm/pkeys.c:22:6: warning: symbol 'execute_only_key' was not declared. Should it be static? arch/powerpc/mm/pkeys.c:60:5: warning: symbol 'pkey_initialize' was not declared. Should it be static? arch/powerpc/mm/pkeys.c:404:6: warning: symbol 'arch_vma_access_permitted' was not declared. Should it be static? This patch fix al the warning, basically turning all global variables that are not declared as extern at asm/pkeys.h into static. It also includes asm/mmu_context.h header, which contains the definition of arch_vma_access_permitted. Signed-off-by:
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Breno Leitao authored
There are three symbols (two variables and a function) that are being used solely in the same file (imc-pmu.c), thus, these symbols should be static, but they are not. This was detected by sparse: arch/powerpc/perf/imc-pmu.c:31:20: warning: symbol 'nest_imc_refc' was not declared. Should it be static? arch/powerpc/perf/imc-pmu.c:37:20: warning: symbol 'core_imc_refc' was not declared. Should it be static? arch/powerpc/perf/imc-pmu.c:46:16: warning: symbol 'imc_event_to_pmu' was not declared. Should it be static? This patch simply adds the 'static' storage-class definition to these symbols, thus, restricting their usage only in the imc-pmu.c file. Signed-off-by:
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Breno Leitao authored
Function scom_map_device() returns data type 'scom_map_t', which is a typedef for 'void *'. This functions is currently returning NULL and zero, which causes the following warning by 'sparse': arch/powerpc/sysdev/scom.c:63:24: warning: Using plain integer as NULL pointer arch/powerpc/sysdev/scom.c:86:24: warning: Using plain integer as NULL pointer This patch simply replaces zero by NULL. Signed-off-by:
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Breno Leitao authored
Functions do_stf_{entry,exit}_barrier_fixups are static but not declared as such. This was detected by `sparse` tool with the following warning: arch/powerpc/lib/feature-fixups.c:121:6: warning: symbol 'do_stf_entry_barrier_fixups' was not declared. Should it be static? arch/powerpc/lib/feature-fixups.c:171:6: warning: symbol 'do_stf_exit_barrier_fixups' was not declared. Should it be static? This patch declares both functions as static, as they are only called by do_stf_barrier_fixups(), which is in the same source code file. Signed-off-by: -
Breno Leitao authored
Currently sparse is complaining about three issues on the xmon code. Two storage classes issues and a dereferencing a 'noderef' pointer. These are the warnings: arch/powerpc/xmon/xmon.c:2783:1: warning: symbol 'dump_log_buf' was not declared. Should it be static? arch/powerpc/xmon/xmon.c:2989:6: warning: symbol 'format_pte' was not declared. Should it be static? arch/powerpc/xmon/xmon.c:2983:30: warning: dereference of noderef expression This patch fixes all of them, turning both functions static and dereferencing a pointer calling rcu_dereference() instead of a straightforward dereference. Signed-off-by:
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Breno Leitao authored
Sparse shows that xive_do_source_eoi() file is defined without any declaration, thus, it should be a static function. arch/powerpc/sysdev/xive/common.c:312:6: warning: symbol 'xive_do_source_eoi' was not declared. Should it be static? This patch simply turns this symbol into static. Signed-off-by:
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Breno Leitao authored
Function pci_ers_result_name() is a static function, although not declared as such. This was detected by sparse in the following warning arch/powerpc/kernel/eeh_driver.c:63:12: warning: symbol 'pci_ers_result_name' was not declared. Should it be static? This patch simply declares the function a static. Signed-off-by:
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Breno Leitao authored
Current powerpc security.c file is defining functions, as cpu_show_meltdown(), cpu_show_spectre_v{1,2} and others, that are being declared at linux/cpu.h header without including the header file that contains these declarations. This is being reported by sparse, which thinks that these functions are static, due to the lack of declaration: arch/powerpc/kernel/security.c:105:9: warning: symbol 'cpu_show_meltdown' was not declared. Should it be static? arch/powerpc/kernel/security.c:139:9: warning: symbol 'cpu_show_spectre_v1' was not declared. Should it be static? arch/powerpc/kernel/security.c:161:9: warning: symbol 'cpu_show_spectre_v2' was not declared. Should it be static? arch/powerpc/kernel/security.c:209:6: warning: symbol 'stf_barrier' was not declared. Should it be static? arch/powerpc/kernel/security.c:289:9: warning: symbol 'cpu_show_spec_store_bypass' was not declared. Should it be static? This patch simply includes the proper header (linux/cpu.h) to match function definition and declaration. Signed-off-by: -
Michael Ellerman authored
This contains a few must have fixes, like the stack alignment one.
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- 15 Nov, 2018 2 commits
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Gustavo Romero authored
Currently the selftest wild_bctr can fail to build when an old gcc is used, notably on gcc using a binutils version <= 2.27, because the assembler does not support the integer suffix UL. This patch adjusts the wild_bctr test so the REG_POISON value is still treated as an unsigned long for the shifts on compilation but the UL suffix is absent on the stringification, so the inline asm code generated has no UL suffixes. Signed-off-by:
Gustavo Romero <gromero@linux.vnet.ibm.com> [mpe: Wrap long line] Signed-off-by:
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Nicholas Piggin authored
Commit 4c2de74c ("powerpc/64: Interrupts save PPR on stack rather than thread_struct") changed sizeof(struct pt_regs) % 16 from 0 to 8, which causes the interrupt frame allocation on kernel entry to put the kernel stack out of alignment. Quadword (16-byte) alignment for the stack is required by both the 64-bit v1 ABI (v1.9 § 3.2.2) and the 64-bit v2 ABI (v1.1 § 2.2.2.1). Add a pad field to fix alignment, and add a BUILD_BUG_ON to catch this in future. Fixes: 4c2de74c ("powerpc/64: Interrupts save PPR on stack rather than thread_struct") Signed-off-by:
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- 14 Nov, 2018 1 commit
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Satheesh Rajendran authored
When VPHN function is not supported and during cpu hotplug event, kernel prints message 'VPHN function not supported. Disabling polling...'. Currently it prints on every hotplug event, it floods dmesg when a KVM guest tries to hotplug huge number of vcpus, let's just print once and suppress further kernel prints. Signed-off-by:
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