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2021-01-19Revert "MIPS: Octeon: Remove special handling of CONFIG_MIPS_ELF_APPENDED_DTB=y"Kevin Hao
This reverts commit d9df9fb901d25b941ab2cfb5b570d91fb2abf7a3. For the OCTEON boards, it need to patch the built-in DTB before using it. Previously it judges if it is a built-in DTB by checking fw_passed_dtb. But after commit 37e5c69ffd41 ("MIPS: head.S: Init fw_passed_dtb to builtin DTB", the fw_passed_dtb is initialized even when using built-in DTB. This causes the OCTEON boards boot broken due to an unpatched built-in DTB is used. Revert the commit d9df9fb901d2 to restore the codes before the fw_passed_dtb is used and then fix this issue. Fixed: 37e5c69ffd41 ("MIPS: head.S: Init fw_passed_dtb to builtin DTB") Cc: stable@vger.kernel.org Suggested-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-18MIPS: relocatable: optimize the relocation processAlexander Lobakin
For now, vmlinux relocation functions for relocatable kernel are implemented as an array of handlers of a particular type. Convert that array into a single switch-case function to: - remove unused arguments; - change the return type of simple handlers to void; - remove the array and don't use any data at all; - avoid using indirect calls; - allow the compiler to inline and greatly optimize the relocation function[s]; and also mark do_relocations() and show_kernel_relocation() static as they aren't used anywhere else. The result on MIPS32 R2 with GCC 10.2 -O2 is: scripts/bloat-o-meter -c arch/mips/kernel/__relocate.o arch/mips/kernel/relocate.o add/remove: 0/6 grow/shrink: 1/0 up/down: 356/-640 (-284) Function old new delta relocate_kernel 852 1208 +356 apply_r_mips_32_rel 20 - -20 apply_r_mips_hi16_rel 40 - -40 apply_r_mips_64_rel 44 - -44 apply_r_mips_26_rel 144 - -144 show_kernel_relocation 164 - -164 do_relocations 228 - -228 Total: Before=1780, After=1496, chg -15.96% add/remove: 0/1 grow/shrink: 0/0 up/down: 0/-76 (-76) Data old new delta reloc_handlers_rel 76 - -76 Total: Before=92, After=16, chg -82.61% add/remove: 0/0 grow/shrink: 0/0 up/down: 0/0 (0) RO Data old new delta Total: Before=0, After=0, chg +0.00% All functions were collapsed into the main one, relocate_kernel(). Signed-off-by: Alexander Lobakin <alobakin@pm.me> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-18MIPS: module: optimize module relocations processingAlexander Lobakin
For now, module relocation functions are implemented as an array of handlers of type reloc_handler_t. Convert that array into a single switch-case function to: - remove unused arguments; - change the return type of simple handlers to void; - remove the array and don't use any data at all; - avoid using indirect calls; - allow the compiler to inline and greatly optimize the relocation function[s]. The result on MIPS32 R2 with GCC 10.2 -O2 is: scripts/bloat-o-meter -c arch/mips/kernel/__module.o arch/mips/kernel/module.o add/remove: 1/11 grow/shrink: 1/0 up/down: 876/-1436 (-560) Function old new delta apply_relocate 456 1148 +692 apply_r_mips_pc - 184 +184 apply_r_mips_none 8 - -8 apply_r_mips_32 16 - -16 apply_r_mips_64 76 - -76 apply_r_mips_highest 88 - -88 apply_r_mips_higher 108 - -108 apply_r_mips_26 132 - -132 apply_r_mips_pc26 160 - -160 apply_r_mips_pc21 160 - -160 apply_r_mips_pc16 160 - -160 apply_r_mips_hi16 172 - -172 apply_r_mips_lo16 356 - -356 Total: Before=2608, After=2048, chg -21.47% add/remove: 0/0 grow/shrink: 0/0 up/down: 0/0 (0) Data old new delta Total: Before=12, After=12, chg +0.00% add/remove: 0/1 grow/shrink: 0/0 up/down: 0/-248 (-248) RO Data old new delta reloc_handlers 248 - -248 Total: Before=248, After=0, chg -100.00% All functions were collapsed into a single one that is called directly by $(srctree)/kernel/module.c. Signed-off-by: Alexander Lobakin <alobakin@pm.me> Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-18MIPS: VDSO: Use CLANG_FLAGS instead of filtering out '--target='Nathan Chancellor
Commit ee67855ecd9d ("MIPS: vdso: Allow clang's --target flag in VDSO cflags") allowed the '--target=' flag from the main Makefile to filter through to the vDSO. However, it did not bring any of the other clang specific flags for controlling the integrated assembler and the GNU tools locations (--prefix=, --gcc-toolchain=, and -no-integrated-as). Without these, we will get a warning (visible with tinyconfig): arch/mips/vdso/elf.S:14:1: warning: DWARF2 only supports one section per compilation unit .pushsection .note.Linux, "a",@note ; .balign 4 ; .long 2f - 1f ; .long 4484f - 3f ; .long 0 ; 1:.asciz "Linux" ; 2:.balign 4 ; 3: ^ arch/mips/vdso/elf.S:34:2: warning: DWARF2 only supports one section per compilation unit .section .mips_abiflags, "a" ^ All of these flags are bundled up under CLANG_FLAGS in the main Makefile and exported so that they can be added to Makefiles that set their own CFLAGS. Use this value instead of filtering out '--target=' so there is no warning and all of the tools are properly used. Cc: stable@vger.kernel.org Fixes: ee67855ecd9d ("MIPS: vdso: Allow clang's --target flag in VDSO cflags") Link: https://github.com/ClangBuiltLinux/linux/issues/1256 Reported-by: Anders Roxell <anders.roxell@linaro.org> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Tested-by: Anders Roxell <anders.roxell@linaro.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-18MIPS: Ingenic: Disable HPTLB for D0 XBurst CPUs tooPaul Cercueil
The JZ4760 has the HPTLB as well, but has a XBurst CPU with a D0 CPUID. Disable the HPTLB for all XBurst CPUs with a D0 CPUID. In the case where there is no HPTLB (e.g. for older SoCs), this won't have any side effect. Fixes: b02efeb05699 ("MIPS: Ingenic: Disable abandoned HPTLB function.") Cc: <stable@vger.kernel.org> # 5.4 Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-15MIPS: Support binutils configured with --enable-mips-fix-loongson3-llsc=yesAurelien Jarno
From version 2.35, binutils can be configured with --enable-mips-fix-loongson3-llsc=yes, which means it defaults to -mfix-loongson3-llsc. This breaks labels which might then point at the wrong instruction. The workaround to explicitly pass -mno-fix-loongson3-llsc has been added in Linux version 5.1, but is only enabled when building a Loongson 64 kernel. As vendors might use a common toolchain for building Loongson and non-Loongson kernels, just move that workaround to arch/mips/Makefile. At the same time update the comments to reflect the current status. Cc: stable@vger.kernel.org # 5.1+ Cc: YunQiang Su <syq@debian.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-15MIPS: Compare __SYNC_loongson3_war against 0Nathan Chancellor
When building with clang when CONFIG_CPU_LOONGSON3_WORKAROUNDS is enabled: In file included from lib/errseq.c:4: In file included from ./include/linux/atomic.h:7: ./arch/mips/include/asm/atomic.h:52:1: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] ATOMIC_OPS(atomic64, s64) ^ ./arch/mips/include/asm/atomic.h:40:9: note: expanded from macro 'ATOMIC_OPS' return cmpxchg(&v->counter, o, n); ^ ./arch/mips/include/asm/cmpxchg.h:194:7: note: expanded from macro 'cmpxchg' if (!__SYNC_loongson3_war) ^ ./arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ While it is not wrong that the result of this shift is always true in a boolean context, it is not a problem here. Regardless, the warning is really noisy so rather than making the shift a boolean implicitly, use it in an equality comparison so the shift is used as an integer value. Fixes: 4d1dbfe6cbec ("MIPS: atomic: Emit Loongson3 sync workarounds within asm") Fixes: a91f2a1dba44 ("MIPS: cmpxchg: Omit redundant barriers for Loongson3") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-15MIPS: pgtable: fix -Wshadow in asm/pgtable.hAlexander Lobakin
Solves the following repetitive warning when building with -Wshadow: In file included from ./include/linux/pgtable.h:6, from ./include/linux/mm.h:33, from ./include/linux/dax.h:6, from ./include/linux/mempolicy.h:11, from kernel/fork.c:34: ./arch/mips/include/asm/mmu_context.h: In function ‘switch_mm’: ./arch/mips/include/asm/pgtable.h:97:16: warning: declaration of ‘flags’ shadows a previous local [-Wshadow] 97 | unsigned long flags; \ | ^~~~~ ./arch/mips/include/asm/mmu_context.h:162:2: note: in expansion of macro ‘htw_stop’ 162 | htw_stop(); | ^~~~~~~~ In file included from kernel/fork.c:102: ./arch/mips/include/asm/mmu_context.h:159:16: note: shadowed declaration is here 159 | unsigned long flags; | ^~~~~ Signed-off-by: Alexander Lobakin <alobakin@pm.me> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-15MIPS: bitops: fix -Wshadow in asm/bitops.hAlexander Lobakin
Solves the following repetitive warning when building with -Wshadow: In file included from ./include/linux/bitops.h:32, from ./include/linux/kernel.h:11, from ./include/linux/skbuff.h:13, from ./include/linux/if_ether.h:19, from ./include/linux/etherdevice.h:20: ./arch/mips/include/asm/bitops.h: In function ‘test_and_set_bit_lock’: ./arch/mips/include/asm/bitops.h:46:16: warning: declaration of ‘orig’ shadows a previous local [-Wshadow] 46 | unsigned long orig, temp; \ | ^~~~ ./arch/mips/include/asm/bitops.h:190:10: note: in expansion of macro ‘__test_bit_op’ 190 | orig = __test_bit_op(*m, "%0", | ^~~~~~~~~~~~~ ./arch/mips/include/asm/bitops.h:185:21: note: shadowed declaration is here 185 | unsigned long res, orig; | ^~~~ ./arch/mips/include/asm/bitops.h: In function ‘test_and_clear_bit’: ./arch/mips/include/asm/bitops.h:46:16: warning: declaration of ‘orig’ shadows a previous local [-Wshadow] 46 | unsigned long orig, temp; \ | ^~~~ ./arch/mips/include/asm/bitops.h:236:9: note: in expansion of macro ‘__test_bit_op’ 236 | res = __test_bit_op(*m, "%1", | ^~~~~~~~~~~~~ ./arch/mips/include/asm/bitops.h:229:21: note: shadowed declaration is here 229 | unsigned long res, orig; | ^~~~ ./arch/mips/include/asm/bitops.h:46:16: warning: declaration of ‘orig’ shadows a previous local [-Wshadow] 46 | unsigned long orig, temp; \ | ^~~~ ./arch/mips/include/asm/bitops.h:241:10: note: in expansion of macro ‘__test_bit_op’ 241 | orig = __test_bit_op(*m, "%0", | ^~~~~~~~~~~~~ ./arch/mips/include/asm/bitops.h:229:21: note: shadowed declaration is here 229 | unsigned long res, orig; | ^~~~ ./arch/mips/include/asm/bitops.h: In function ‘test_and_change_bit’: ./arch/mips/include/asm/bitops.h:46:16: warning: declaration of ‘orig’ shadows a previous local [-Wshadow] 46 | unsigned long orig, temp; \ | ^~~~ ./arch/mips/include/asm/bitops.h:273:10: note: in expansion of macro ‘__test_bit_op’ 273 | orig = __test_bit_op(*m, "%0", | ^~~~~~~~~~~~~ ./arch/mips/include/asm/bitops.h:266:21: note: shadowed declaration is here 266 | unsigned long res, orig; | ^~~~ Signed-off-by: Alexander Lobakin <alobakin@pm.me> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-15MIPS: select ARCH_WANT_LD_ORPHAN_WARNAlexander Lobakin
Now, after that all the sections are explicitly described and declared in vmlinux.lds.S, we can enable ld orphan warnings to prevent from missing any new sections in future. Signed-off-by: Alexander Lobakin <alobakin@pm.me> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-15MIPS: vmlinux.lds.S: explicitly declare .got tableAlexander Lobakin
LLVM stack generates GOT table when building the kernel: ld.lld: warning: <internal>:(.got) is being placed in '.got' According to the debug assertions, it's not zero-sized and thus can't be handled the way it's done for x86. Also use the ARM64 path here and place it at the end of .text section. Reported-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Alexander Lobakin <alobakin@pm.me> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-15MIPS: vmlinux.lds.S: explicitly catch .rel.dyn symbolsAlexander Lobakin
According to linker warnings, both GCC and LLVM generate '.rel.dyn' symbols: mips-alpine-linux-musl-ld: warning: orphan section `.rel.dyn' from `init/main.o' being placed in section `.rel.dyn' Link-time assertion shows that this section is sometimes empty, sometimes not, depending on machine bitness and the compiler [0]: LD .tmp_vmlinux.kallsyms1 mips64-linux-gnu-ld: Unexpected run-time relocations (.rel) detected! Just use the ARM64 approach and declare it in vmlinux.lds.S closer to __init_end. [0] https://lore.kernel.org/linux-mips/20210109111259.GA4213@alpha.franken.de Reported-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Alexander Lobakin <alobakin@pm.me> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-15MIPS: properly stop .eh_frame generationAlexander Lobakin
Commit 866b6a89c6d1 ("MIPS: Add DWARF unwinding to assembly") added -fno-asynchronous-unwind-tables to KBUILD_CFLAGS to prevent compiler from emitting .eh_frame symbols. However, as MIPS heavily uses CFI, that's not enough. Use the approach taken for x86 (as it also uses CFI) and explicitly put CFI symbols into the .debug_frame section (except for VDSO). This allows us to drop .eh_frame from DISCARDS as it's no longer being generated. Fixes: 866b6a89c6d1 ("MIPS: Add DWARF unwinding to assembly") Suggested-by: Kees Cook <keescook@chromium.org> Signed-off-by: Alexander Lobakin <alobakin@pm.me> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-15MIPS: vmlinux.lds.S: add ".gnu.attributes" to DISCARDSAlexander Lobakin
Discard GNU attributes (MIPS FP type, GNU Hash etc.) at link time as kernel doesn't use it at all. Solves a dozen of the following ld warnings (one per every file): mips-alpine-linux-musl-ld: warning: orphan section `.gnu.attributes' from `arch/mips/kernel/head.o' being placed in section `.gnu.attributes' mips-alpine-linux-musl-ld: warning: orphan section `.gnu.attributes' from `init/main.o' being placed in section `.gnu.attributes' Signed-off-by: Alexander Lobakin <alobakin@pm.me> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-15MIPS: CPS: don't create redundant .text.cps-vec sectionAlexander Lobakin
A number of symbols from arch/mips/kernel/cps-vec.S is explicitly placed into '.text.cps-vec' section. There are no direct references to this section, so there's no need to form it. '.balign 0x1000' directive will work anyway. Moreover, this section was being placed in vmlinux differently depending on CONFIG_LD_DEAD_CODE_DATA_ELIMINATION: - with this option enabled, '.text.cps-vec' was being caught by '.text.[0-9a-zA-Z_]*' from include/asm-generic/vmlinux.lds.h; - without this option, '.text.cps-vec' was being caught by discouraging '.text.*' from arch/mips/kernel/vmlinux.lds.S. '.text.*' should not be used in vmlinux linker scripts at all as it silently catches any orphan text sections. So, remove both '.section .text.cps-vec' and '.text.*' from cps-vec.S and vmlinux.lds.S respectively. As said, this does not affect related functions alignment: 80116000 T mips_cps_core_entry 80116028 t not_nmi 80116200 T excep_tlbfill 80116280 T excep_xtlbfill 80116300 T excep_cache 80116380 T excep_genex 80116400 T excep_intex 80116480 T excep_ejtag 80116490 T mips_cps_core_init Signed-off-by: Alexander Lobakin <alobakin@pm.me> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-15MIPS: vmlinux.lds.S: add missing PAGE_ALIGNED_DATA() sectionAlexander Lobakin
MIPS uses its own declaration of rwdata, and thus it should be kept in sync with the asm-generic one. Currently PAGE_ALIGNED_DATA() is missing from the linker script, which emits the following ld warnings: mips-alpine-linux-musl-ld: warning: orphan section `.data..page_aligned' from `arch/mips/kernel/vdso.o' being placed in section `.data..page_aligned' mips-alpine-linux-musl-ld: warning: orphan section `.data..page_aligned' from `arch/mips/vdso/vdso-image.o' being placed in section `.data..page_aligned' Add the necessary declaration, so the mentioned structures will be placed in vmlinux as intended: ffffffff80630580 D __end_once ffffffff80630580 D __start___dyndbg ffffffff80630580 D __start_once ffffffff80630580 D __stop___dyndbg ffffffff80634000 d mips_vdso_data ffffffff80638000 d vdso_data ffffffff80638580 D _gp ffffffff8063c000 T __init_begin ffffffff8063c000 D _edata ffffffff8063c000 T _sinittext -> ffffffff805a4000 D __end_init_task ffffffff805a4000 D __nosave_begin ffffffff805a4000 D __nosave_end ffffffff805a4000 d mips_vdso_data ffffffff805a8000 d vdso_data ffffffff805ac000 D mmlist_lock ffffffff805ac080 D tasklist_lock Fixes: ebb5e78cc634 ("MIPS: Initial implementation of a VDSO") Signed-off-by: Alexander Lobakin <alobakin@pm.me> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Cc: stable@vger.kernel.org # 4.4+ Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-13MIPS: lantiq: irq: register the interrupt controllers with irqchip_initMartin Blumenstingl
Add support for more interrupt controllers by switching from of_irq_init() to irqchip_init() in Lantiq's arch_init_irq(). This requires switching the ICU interrupt controller to use IRQCHIP_DECLARE(), like a real irqchip driver would do. This is needed for future changes when new irqchip drivers are implemented: - a dedicated driver for the EIU interrupt controller - a driver for the MSI PIC (Programmable Interrupt Controller) found on VRX200 and newer SoCs - ..or any other driver which uses IRQCHIP_DECLARE Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-09MIPS: bitops: Fix reference to ffz locationGeert Uytterhoeven
Unlike most other architectures, MIPS defines ffz() below ffs(). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-07MIPS: UAPI: unexport unistd_nr_{n32,n64,o32}.hAlexander Lobakin
unistd_nr_{n32,n64,o32}.h are needed only by include/asm/unistd.h, which is a kernel-side header file, and their contents is generally not for userland use. Move their target destination from include/generated/uapi/asm/ to include/generated/asm/ to disable exporting them as UAPI headers. Signed-off-by: Alexander Lobakin <alobakin@pm.me> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-07MIPS: lantiq: Explicitly compare LTQ_EBU_PCC_ISTAT against 0Nathan Chancellor
When building xway_defconfig with clang: arch/mips/lantiq/irq.c:305:48: error: use of logical '&&' with constant operand [-Werror,-Wconstant-logical-operand] if ((irq == LTQ_ICU_EBU_IRQ) && (module == 0) && LTQ_EBU_PCC_ISTAT) ^ ~~~~~~~~~~~~~~~~~ arch/mips/lantiq/irq.c:305:48: note: use '&' for a bitwise operation if ((irq == LTQ_ICU_EBU_IRQ) && (module == 0) && LTQ_EBU_PCC_ISTAT) ^~ & arch/mips/lantiq/irq.c:305:48: note: remove constant to silence this warning if ((irq == LTQ_ICU_EBU_IRQ) && (module == 0) && LTQ_EBU_PCC_ISTAT) ~^~~~~~~~~~~~~~~~~~~~ 1 error generated. Explicitly compare the constant LTQ_EBU_PCC_ISTAT against 0 to fix the warning. Additionally, remove the unnecessary parentheses as this is a simple conditional statement and shorthand '== 0' to '!'. Fixes: 3645da0276ae ("OF: MIPS: lantiq: implement irq_domain support") Link: https://github.com/ClangBuiltLinux/linux/issues/807 Reported-by: Dmitry Golovin <dima@golovin.in> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-07MIPS: init: move externs to header fileYanteng Si
This commit fixes the following checkpatch warnings: WARNING: externs should be avoided in .c files This is a warning for placing declarations in a ".c" file. This fix removes the declaration in ".c" and adds it to the common header file. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Huacai Chen <chenhuacai@kernel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-07MIPS: zboot: Avoid endless loop in clear BSS.Jinyang He
Commit 2ee1503e546f ("MIPS: zboot: head.S clean up"). After .noreorder removed, clear BSS fall into endless loop. The bne instruction will add nop to the delay slot at compile time. So a0 register will not increment by 4. Fix it and clear BSS from _edata to (_end - 1). Signed-off-by: Jinyang He <hejinyang@loongson.cn> Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-07MIPS: Remove empty prom_free_prom_memory functionsThomas Bogendoerfer
Most of the prom_free_prom_memory functions are empty. With a new weak prom_free_prom_memory() we can remove all of them. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Acked-by: Florian Fainelli <f.fainelli@gmail.com>
2021-01-07MIPS: c-r4k: Fix section mismatch for loongson2_sc_initNathan Chancellor
When building with clang, the following section mismatch warning occurs: WARNING: modpost: vmlinux.o(.text+0x24490): Section mismatch in reference from the function r4k_cache_init() to the function .init.text:loongson2_sc_init() This should have been fixed with commit ad4fddef5f23 ("mips: fix Section mismatch in reference") but it was missed. Remove the improper __init annotation like that commit did. Fixes: 078a55fc824c ("MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code") Link: https://github.com/ClangBuiltLinux/linux/issues/787 Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Huacai Chen <chenhuacai@kernel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-07MIPS: Use address-of operator on section symbolsNathan Chancellor
When building xway_defconfig with clang: arch/mips/lantiq/prom.c:82:23: error: array comparison always evaluates to true [-Werror,-Wtautological-compare] else if (__dtb_start != __dtb_end) ^ 1 error generated. These are not true arrays, they are linker defined symbols, which are just addresses. Using the address of operator silences the warning and does not change the resulting assembly with either clang/ld.lld or gcc/ld (tested with diff + objdump -Dr). Do the same thing across the entire MIPS subsystem to ensure there are no more warnings around this type of comparison. Link: https://github.com/ClangBuiltLinux/linux/issues/1232 Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-04MIPS: loongson64: smp.c: Fix block comment coding stylesiyanteng
This patch fixes: "WARNING: Block comments use a trailing */ on a separate line" by checkpatch.pl Signed-off-by: siyanteng <siyanteng@loongson.cn> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-04MIPS: Kill RM7K & RM9K IRQ CodeJiaxun Yang
RM7000 IRQ driver never got really used by any of the platform, and rm9k_cpu_irq_init only exist in a header. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-04MIPS: perf: Add support for OCTEON III perf events.Jia Qingtong
According to Hardware Reference Manual, OCTEON III are mostly same as previous OCTEON models. So just enable them and extend supported event code. 0x3e and 0x3f still reserved. Signed-off-by: Jia Qingtong <jiaqingtong97@163.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-04MIPS: Loongson64: Set cluster for coresJiaxun Yang
cluster is required for cacheinfo to set shared_cpu_map correctly. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Reviewed-by: Tiezhu Yang <yangtiezhu@loongson.cn> Tested-by: Tiezhu Yang <yangtiezhu@loongson.cn> Reviewed-by: Huacai Chen <chenhuacai@kernel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-04MIPS: cacheinfo: Add missing VCacheJiaxun Yang
Victim Cache is defined by Loongson as per-core unified private Cache. Add this into cacheinfo and make cache levels selfincrement instead of hardcode levels. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Reviewed-by: Tiezhu Yang <yangtiezhu@loongson.cn> Tested-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-04MIPS: zboot: head.S clean upJiaxun Yang
.cprestore is removed as we don't expect Position Independent zboot ELF. .noreorder is also removed and rest instructions are massaged to improve readability. t9 register is used for indirect jump as MIPS ABI requirement. start label is removed as it already defined in LEAF. Reported-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Reviewed-by: Huacai Chen <chenhuacai@kernel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-01-04MIPS: Loongson64: Give chance to build under !CONFIG_NUMA and !CONFIG_SMPTiezhu Yang
In the current code, we can not build under !CONFIG_NUMA and !CONFIG_SMP on the Loongson64 platform, it seems bad for the users who just want to use pure single core (not nosmp) to debug, so do the following things to give them a chance: (1) Do not select NUMA and SMP for MACH_LOONGSON64 in Kconfig, make NUMA depends on SMP, and then just set them in the loongson3_defconfig. (2) Move szmem() from numa.c to init.c and add prom_init_memory() under !CONFIG_NUMA. (3) Clean up szmem() due to the statements of case SYSTEM_RAM_LOW and SYSTEM_RAM_HIGH are the same. (4) Remove the useless declaration of prom_init_memory() and add the declaration of szmem() in loongson.h to avoid build error. Signed-off-by: Youling Tang <tangyouling@loongson.cn> Signed-off-by: Jinyang He <hejinyang@loongson.cn> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-12-28MIPS: No need to check CPU 0 in cps_cpu_disable()Tiezhu Yang
After commit 9cce844abf07 ("MIPS: CPU#0 is not hotpluggable"), c->hotpluggable is 0 for CPU 0 and it will not generate a control file in sysfs for this CPU: [root@linux loongson]# cat /sys/devices/system/cpu/cpu0/online cat: /sys/devices/system/cpu/cpu0/online: No such file or directory [root@linux loongson]# echo 0 > /sys/devices/system/cpu/cpu0/online bash: /sys/devices/system/cpu/cpu0/online: Permission denied So no need to check CPU 0 in cps_cpu_disable(), just remove it. Reported-by: liwei (GF) <liwei391@huawei.com> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-12-28mips: pci: convert comma to semicolonZheng Yongjun
Replace a comma between expression statements by a semicolon. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-12-28mips: kernel: convert comma to semicolonZheng Yongjun
Replace a comma between expression statements by a semicolon. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-12-20epoll: fix compat syscall wire up of epoll_pwait2Heiko Carstens
Commit b0a0c2615f6f ("epoll: wire up syscall epoll_pwait2") wired up the 64 bit syscall instead of the compat variant in a couple of places. Fixes: b0a0c2615f6f ("epoll: wire up syscall epoll_pwait2") Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Willem de Bruijn <willemb@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-19epoll: wire up syscall epoll_pwait2Willem de Bruijn
Split off from prev patch in the series that implements the syscall. Link: https://lkml.kernel.org/r/20201121144401.3727659-4-willemdebruijn.kernel@gmail.com Signed-off-by: Willem de Bruijn <willemb@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-16Merge tag 'tif-task_work.arch-2020-12-14' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull TIF_NOTIFY_SIGNAL updates from Jens Axboe: "This sits on top of of the core entry/exit and x86 entry branch from the tip tree, which contains the generic and x86 parts of this work. Here we convert the rest of the archs to support TIF_NOTIFY_SIGNAL. With that done, we can get rid of JOBCTL_TASK_WORK from task_work and signal.c, and also remove a deadlock work-around in io_uring around knowing that signal based task_work waking is invoked with the sighand wait queue head lock. The motivation for this work is to decouple signal notify based task_work, of which io_uring is a heavy user of, from sighand. The sighand lock becomes a huge contention point, particularly for threaded workloads where it's shared between threads. Even outside of threaded applications it's slower than it needs to be. Roman Gershman <romger@amazon.com> reported that his networked workload dropped from 1.6M QPS at 80% CPU to 1.0M QPS at 100% CPU after io_uring was changed to use TIF_NOTIFY_SIGNAL. The time was all spent hammering on the sighand lock, showing 57% of the CPU time there [1]. There are further cleanups possible on top of this. One example is TIF_PATCH_PENDING, where a patch already exists to use TIF_NOTIFY_SIGNAL instead. Hopefully this will also lead to more consolidation, but the work stands on its own as well" [1] https://github.com/axboe/liburing/issues/215 * tag 'tif-task_work.arch-2020-12-14' of git://git.kernel.dk/linux-block: (28 commits) io_uring: remove 'twa_signal_ok' deadlock work-around kernel: remove checking for TIF_NOTIFY_SIGNAL signal: kill JOBCTL_TASK_WORK io_uring: JOBCTL_TASK_WORK is no longer used by task_work task_work: remove legacy TWA_SIGNAL path sparc: add support for TIF_NOTIFY_SIGNAL riscv: add support for TIF_NOTIFY_SIGNAL nds32: add support for TIF_NOTIFY_SIGNAL ia64: add support for TIF_NOTIFY_SIGNAL h8300: add support for TIF_NOTIFY_SIGNAL c6x: add support for TIF_NOTIFY_SIGNAL alpha: add support for TIF_NOTIFY_SIGNAL xtensa: add support for TIF_NOTIFY_SIGNAL arm: add support for TIF_NOTIFY_SIGNAL microblaze: add support for TIF_NOTIFY_SIGNAL hexagon: add support for TIF_NOTIFY_SIGNAL csky: add support for TIF_NOTIFY_SIGNAL openrisc: add support for TIF_NOTIFY_SIGNAL sh: add support for TIF_NOTIFY_SIGNAL um: add support for TIF_NOTIFY_SIGNAL ...
2020-12-16Merge tag 'mips_5.11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS updates from Thomas Bogendoerfer: - enable GCOV - rework setup of protection map - add support for more MSCC platforms - add sysfs boardinfo for Loongson64 - enable KASLR for Loogson64 - add reset controller for BCM63xx - cleanups and fixes * tag 'mips_5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (70 commits) mips: fix Section mismatch in reference MAINTAINERS: Add linux-mips mailing list to JZ47xx entries MAINTAINERS: Remove JZ4780 DMA driver entry MAINTAINERS: chenhc@lemote.com -> chenhuacai@kernel.org MIPS: Octeon: irq: Alloc desc before configuring IRQ MIPS: mm: Add back define for PAGE_SHARED MIPS: Select ARCH_KEEP_MEMBLOCK if DEBUG_KERNEL to enable sysfs memblock debug mips: lib: uncached: fix non-standard usage of variable 'sp' MIPS: DTS: img: Fix schema warnings for pwm-leds MIPS: KASLR: Avoid endless loop in sync_icache if synci_step is zero MIPS: Move memblock_dump_all() to the end of setup_arch() MIPS: SMP-CPS: Add support for irq migration when CPU offline MIPS: OCTEON: Don't add kernel sections into memblock allocator MIPS: Don't round up kernel sections size for memblock_add() MIPS: Enable GCOV MIPS: configs: drop unused BACKLIGHT_GENERIC option MIPS: Loongson64: Fix up reserving kernel memory range MIPS: mm: Remove unused is_aligned_hugepage_range MIPS: No need to check CPU 0 in {loongson3,bmips,octeon}_cpu_disable() mips: cdmm: fix use-after-free in mips_cdmm_bus_discover ...
2020-12-16Merge tag 'asm-generic-timers-5.11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic cross-architecture timer cleanup from Arnd Bergmann: "This cleans up two ancient timer features that were never completed in the past, CONFIG_GENERIC_CLOCKEVENTS and CONFIG_ARCH_USES_GETTIMEOFFSET. There was only one user left for the ARCH_USES_GETTIMEOFFSET variant of clocksource implementations, the ARM EBSA110 platform. Rather than changing to use modern timekeeping, we remove the platform entirely as Russell no longer uses his machine and nobody else seems to have one any more. The conditional code for using arch_gettimeoffset() is removed as a result. For CONFIG_GENERIC_CLOCKEVENTS, there are still a couple of platforms not using clockevent drivers: parisc, ia64, most of m68k, and one Arm platform. These all do timer ticks slighly differently, and this gets cleaned up to the point they at least all call the same helper function. Instead of most platforms using 'select GENERIC_CLOCKEVENTS' in Kconfig, the polarity is now reversed, with the few remaining ones selecting LEGACY_TIMER_TICK instead" * tag 'asm-generic-timers-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: timekeeping: default GENERIC_CLOCKEVENTS to enabled timekeeping: remove xtime_update m68k: remove timer_interrupt() function m68k: change remaining timers to legacy_timer_tick m68k: m68328: use legacy_timer_tick() m68k: sun3/sun3c: use legacy_timer_tick m68k: split heartbeat out of timer function m68k: coldfire: use legacy_timer_tick() parisc: use legacy_timer_tick ARM: rpc: use legacy_timer_tick ia64: convert to legacy_timer_tick timekeeping: add CONFIG_LEGACY_TIMER_TICK timekeeping: remove arch_gettimeoffset net: remove am79c961a driver ARM: remove ebsa110 platform
2020-12-15Merge tag 'asm-generic-mmu-context-5.11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic mmu-context cleanup from Arnd Bergmann: "This is a cleanup series from Nicholas Piggin, preparing for later changes. The asm/mmu_context.h header are generalized and common code moved to asm-gneneric/mmu_context.h. This saves a bit of code and makes it easier to change in the future" * tag 'asm-generic-mmu-context-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (25 commits) h8300: Fix generic mmu_context build m68k: mmu_context: Fix Sun-3 build xtensa: use asm-generic/mmu_context.h for no-op implementations x86: use asm-generic/mmu_context.h for no-op implementations um: use asm-generic/mmu_context.h for no-op implementations sparc: use asm-generic/mmu_context.h for no-op implementations sh: use asm-generic/mmu_context.h for no-op implementations s390: use asm-generic/mmu_context.h for no-op implementations riscv: use asm-generic/mmu_context.h for no-op implementations powerpc: use asm-generic/mmu_context.h for no-op implementations parisc: use asm-generic/mmu_context.h for no-op implementations openrisc: use asm-generic/mmu_context.h for no-op implementations nios2: use asm-generic/mmu_context.h for no-op implementations nds32: use asm-generic/mmu_context.h for no-op implementations mips: use asm-generic/mmu_context.h for no-op implementations microblaze: use asm-generic/mmu_context.h for no-op implementations m68k: use asm-generic/mmu_context.h for no-op implementations ia64: use asm-generic/mmu_context.h for no-op implementations hexagon: use asm-generic/mmu_context.h for no-op implementations csky: use asm-generic/mmu_context.h for no-op implementations ...
2020-12-15Merge tag 'staging-5.11-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging / IIO driver updates from Greg KH: "Here is the big staging and IIO driver pull request for 5.11-rc1 Lots of different things in here: - loads of driver updates - so many coding style cleanups - new IIO drivers - Android ION code is finally removed from the tree - wimax drivers are moved to staging on their way out of the kernel Nothing really exciting, just the constant grind of kernel development :) All have been in linux-next for a while with no reported issues" * tag 'staging-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (341 commits) staging: olpc_dcon: Do not call platform_device_unregister() in dcon_probe() staging: most: Fix spelling mistake "tranceiver" -> "transceiver" staging: qlge: remove duplicate word in comment staging: comedi: mf6x4: Fix AI end-of-conversion detection staging: greybus: Add TODO item about modernizing the pwm code pinctrl: ralink: add a pinctrl driver for the rt2880 family dt-bindings: pinctrl: rt2880: add binding document staging: rtl8723bs: remove ELEMENT_ID enum staging: rtl8723bs: remove unused macros staging: rtl8723bs: replace EID_EXTCapability staging: rtl8723bs: replace EID_BSSIntolerantChlReport staging: rtl8723bs: replace EID_BSSCoexistence staging: rtl8723bs: replace _MME_IE_ staging: rtl8723bs: replace _WAPI_IE_ staging: rtl8723bs: replace _EXT_SUPPORTEDRATES_IE_ staging: rtl8723bs: replace _ERPINFO_IE_ staging: rtl8723bs: replace _CHLGETXT_IE_ staging: rtl8723bs: replace _COUNTRY_IE_ staging: rtl8723bs: replace _IBSS_PARA_IE_ staging: rtl8723bs: replace _TIM_IE_ ...
2020-12-15Merge tag 'usb-5.11-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB / Thunderbolt updates from Greg KH: "Here is the big USB and thunderbolt pull request for 5.11-rc1. Nothing major in here, just the grind of constant development to support new hardware and fix old issues: - thunderbolt updates for new USB4 hardware - cdns3 major driver updates - lots of typec updates and additions as more hardware is available - usb serial driver updates and fixes - other tiny USB driver updates All have been in linux-next with no reported issues" * tag 'usb-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (172 commits) usb: phy: convert comma to semicolon usb: ucsi: convert comma to semicolon usb: typec: tcpm: convert comma to semicolon usb: typec: tcpm: Update vbus_vsafe0v on init usb: typec: tcpci: Enable bleed discharge when auto discharge is enabled usb: typec: Add class for plug alt mode device USB: typec: tcpci: Add Bleed discharge to POWER_CONTROL definition USB: typec: tcpm: Add a 30ms room for tPSSourceOn in PR_SWAP USB: typec: tcpm: Fix PR_SWAP error handling USB: typec: tcpm: Hard Reset after not receiving a Request USB: gadget: f_fs: remove likely/unlikely usb: gadget: f_fs: Re-use SS descriptors for SuperSpeedPlus USB: gadget: f_midi: setup SuperSpeed Plus descriptors USB: gadget: f_acm: add support for SuperSpeed Plus USB: gadget: f_rndis: fix bitrate for SuperSpeed and above usb: typec: intel_pmc_mux: Configure cable generation value for USB4 MAINTAINERS: Add myself as a reviewer for CADENCE USB3 DRD IP DRIVER usb: chipidea: ci_hdrc_imx: Use of_device_get_match_data() usb: chipidea: usbmisc_imx: Use of_device_get_match_data() usb: cdns3: fix NULL pointer dereference on no platform data ...
2020-12-15Merge tag 'net-next-5.11' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - support "prefer busy polling" NAPI operation mode, where we defer softirq for some time expecting applications to periodically busy poll - AF_XDP: improve efficiency by more batching and hindering the adjacency cache prefetcher - af_packet: make packet_fanout.arr size configurable up to 64K - tcp: optimize TCP zero copy receive in presence of partial or unaligned reads making zero copy a performance win for much smaller messages - XDP: add bulk APIs for returning / freeing frames - sched: support fragmenting IP packets as they come out of conntrack - net: allow virtual netdevs to forward UDP L4 and fraglist GSO skbs BPF: - BPF switch from crude rlimit-based to memcg-based memory accounting - BPF type format information for kernel modules and related tracing enhancements - BPF implement task local storage for BPF LSM - allow the FENTRY/FEXIT/RAW_TP tracing programs to use bpf_sk_storage Protocols: - mptcp: improve multiple xmit streams support, memory accounting and many smaller improvements - TLS: support CHACHA20-POLY1305 cipher - seg6: add support for SRv6 End.DT4/DT6 behavior - sctp: Implement RFC 6951: UDP Encapsulation of SCTP - ppp_generic: add ability to bridge channels directly - bridge: Connectivity Fault Management (CFM) support as is defined in IEEE 802.1Q section 12.14. Drivers: - mlx5: make use of the new auxiliary bus to organize the driver internals - mlx5: more accurate port TX timestamping support - mlxsw: - improve the efficiency of offloaded next hop updates by using the new nexthop object API - support blackhole nexthops - support IEEE 802.1ad (Q-in-Q) bridging - rtw88: major bluetooth co-existance improvements - iwlwifi: support new 6 GHz frequency band - ath11k: Fast Initial Link Setup (FILS) - mt7915: dual band concurrent (DBDC) support - net: ipa: add basic support for IPA v4.5 Refactor: - a few pieces of in_interrupt() cleanup work from Sebastian Andrzej Siewior - phy: add support for shared interrupts; get rid of multiple driver APIs and have the drivers write a full IRQ handler, slight growth of driver code should be compensated by the simpler API which also allows shared IRQs - add common code for handling netdev per-cpu counters - move TX packet re-allocation from Ethernet switch tag drivers to a central place - improve efficiency and rename nla_strlcpy - number of W=1 warning cleanups as we now catch those in a patchwork build bot Old code removal: - wan: delete the DLCI / SDLA drivers - wimax: move to staging - wifi: remove old WDS wifi bridging support" * tag 'net-next-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1922 commits) net: hns3: fix expression that is currently always true net: fix proc_fs init handling in af_packet and tls nfc: pn533: convert comma to semicolon af_vsock: Assign the vsock transport considering the vsock address flags af_vsock: Set VMADDR_FLAG_TO_HOST flag on the receive path vsock_addr: Check for supported flag values vm_sockets: Add VMADDR_FLAG_TO_HOST vsock flag vm_sockets: Add flags field in the vsock address data structure net: Disable NETIF_F_HW_TLS_TX when HW_CSUM is disabled tcp: Add logic to check for SYN w/ data in tcp_simple_retransmit net: mscc: ocelot: install MAC addresses in .ndo_set_rx_mode from process context nfc: s3fwrn5: Release the nfc firmware net: vxget: clean up sparse warnings mlxsw: spectrum_router: Use eXtended mezzanine to offload IPv4 router mlxsw: spectrum: Set KVH XLT cache mode for Spectrum2/3 mlxsw: spectrum_router_xm: Introduce basic XM cache flushing mlxsw: reg: Add Router LPM Cache Enable Register mlxsw: reg: Add Router LPM Cache ML Delete Register mlxsw: spectrum_router_xm: Implement L-value tracking for M-index mlxsw: reg: Add XM Router M Table Register ...
2020-12-15Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge misc updates from Andrew Morton: - a few random little subsystems - almost all of the MM patches which are staged ahead of linux-next material. I'll trickle to post-linux-next work in as the dependents get merged up. Subsystems affected by this patch series: kthread, kbuild, ide, ntfs, ocfs2, arch, and mm (slab-generic, slab, slub, dax, debug, pagecache, gup, swap, shmem, memcg, pagemap, mremap, hmm, vmalloc, documentation, kasan, pagealloc, memory-failure, hugetlb, vmscan, z3fold, compaction, oom-kill, migration, cma, page-poison, userfaultfd, zswap, zsmalloc, uaccess, zram, and cleanups). * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (200 commits) mm: cleanup kstrto*() usage mm: fix fall-through warnings for Clang mm: slub: convert sysfs sprintf family to sysfs_emit/sysfs_emit_at mm: shmem: convert shmem_enabled_show to use sysfs_emit_at mm:backing-dev: use sysfs_emit in macro defining functions mm: huge_memory: convert remaining use of sprintf to sysfs_emit and neatening mm: use sysfs_emit for struct kobject * uses mm: fix kernel-doc markups zram: break the strict dependency from lzo zram: add stat to gather incompressible pages since zram set up zram: support page writeback mm/process_vm_access: remove redundant initialization of iov_r mm/zsmalloc.c: rework the list_add code in insert_zspage() mm/zswap: move to use crypto_acomp API for hardware acceleration mm/zswap: fix passing zero to 'PTR_ERR' warning mm/zswap: make struct kernel_param_ops definitions const userfaultfd/selftests: hint the test runner on required privilege userfaultfd/selftests: fix retval check for userfaultfd_open() userfaultfd/selftests: always dump something in modes userfaultfd: selftests: make __{s,u}64 format specifiers portable ...
2020-12-15mm: forbid splitting special mappingsDmitry Safonov
Don't allow splitting of vm_special_mapping's. It affects vdso/vvar areas. Uprobes have only one page in xol_area so they aren't affected. Those restrictions were enforced by checks in .mremap() callbacks. Restrict resizing with generic .split() callback. Link: https://lkml.kernel.org/r/20201013013416.390574-7-dima@arista.com Signed-off-by: Dmitry Safonov <dima@arista.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Andy Lutomirski <luto@kernel.org> Cc: Brian Geffon <bgeffon@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Ralph Campbell <rcampbell@nvidia.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-14Merge tag 'core-mm-2020-12-14' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull kmap updates from Thomas Gleixner: "The new preemtible kmap_local() implementation: - Consolidate all kmap_atomic() internals into a generic implementation which builds the base for the kmap_local() API and make the kmap_atomic() interface wrappers which handle the disabling/enabling of preemption and pagefaults. - Switch the storage from per-CPU to per task and provide scheduler support for clearing mapping when scheduling out and restoring them when scheduling back in. - Merge the migrate_disable/enable() code, which is also part of the scheduler pull request. This was required to make the kmap_local() interface available which does not disable preemption when a mapping is established. It has to disable migration instead to guarantee that the virtual address of the mapped slot is the same across preemption. - Provide better debug facilities: guard pages and enforced utilization of the mapping mechanics on 64bit systems when the architecture allows it. - Provide the new kmap_local() API which can now be used to cleanup the kmap_atomic() usage sites all over the place. Most of the usage sites do not require the implicit disabling of preemption and pagefaults so the penalty on 64bit and 32bit non-highmem systems is removed and quite some of the code can be simplified. A wholesale conversion is not possible because some usage depends on the implicit side effects and some need to be cleaned up because they work around these side effects. The migrate disable side effect is only effective on highmem systems and when enforced debugging is enabled. On 64bit and 32bit non-highmem systems the overhead is completely avoided" * tag 'core-mm-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits) ARM: highmem: Fix cache_is_vivt() reference x86/crashdump/32: Simplify copy_oldmem_page() io-mapping: Provide iomap_local variant mm/highmem: Provide kmap_local* sched: highmem: Store local kmaps in task struct x86: Support kmap_local() forced debugging mm/highmem: Provide CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP mm/highmem: Provide and use CONFIG_DEBUG_KMAP_LOCAL microblaze/mm/highmem: Add dropped #ifdef back xtensa/mm/highmem: Make generic kmap_atomic() work correctly mm/highmem: Take kmap_high_get() properly into account highmem: High implementation details and document API Documentation/io-mapping: Remove outdated blurb io-mapping: Cleanup atomic iomap mm/highmem: Remove the old kmap_atomic cruft highmem: Get rid of kmap_types.h xtensa/mm/highmem: Switch to generic kmap atomic sparc/mm/highmem: Switch to generic kmap atomic powerpc/mm/highmem: Switch to generic kmap atomic nds32/mm/highmem: Switch to generic kmap atomic ...
2020-12-14Merge tag 'sched-core-2020-12-14' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler updates from Thomas Gleixner: - migrate_disable/enable() support which originates from the RT tree and is now a prerequisite for the new preemptible kmap_local() API which aims to replace kmap_atomic(). - A fair amount of topology and NUMA related improvements - Improvements for the frequency invariant calculations - Enhanced robustness for the global CPU priority tracking and decision making - The usual small fixes and enhancements all over the place * tag 'sched-core-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (61 commits) sched/fair: Trivial correction of the newidle_balance() comment sched/fair: Clear SMT siblings after determining the core is not idle sched: Fix kernel-doc markup x86: Print ratio freq_max/freq_base used in frequency invariance calculations x86, sched: Use midpoint of max_boost and max_P for frequency invariance on AMD EPYC x86, sched: Calculate frequency invariance for AMD systems irq_work: Optimize irq_work_single() smp: Cleanup smp_call_function*() irq_work: Cleanup sched: Limit the amount of NUMA imbalance that can exist at fork time sched/numa: Allow a floating imbalance between NUMA nodes sched: Avoid unnecessary calculation of load imbalance at clone time sched/numa: Rename nr_running and break out the magic number sched: Make migrate_disable/enable() independent of RT sched/topology: Condition EAS enablement on FIE support arm64: Rebuild sched domains on invariance status changes sched/topology,schedutil: Wrap sched domains rebuild sched/uclamp: Allow to reset a task uclamp constraint value sched/core: Fix typos in comments Documentation: scheduler: fix information on arch SD flags, sched_domain and sched_debug ...
2020-12-14Merge tag 'arm64-upstream' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Catalin Marinas: - Expose tag address bits in siginfo. The original arm64 ABI did not expose any of the bits 63:56 of a tagged address in siginfo. In the presence of user ASAN or MTE, this information may be useful. The implementation is generic to other architectures supporting tags (like SPARC ADI, subject to wiring up the arch code). The user will have to opt in via sigaction(SA_EXPOSE_TAGBITS) so that the extra bits, if available, become visible in si_addr. - Default to 32-bit wide ZONE_DMA. Previously, ZONE_DMA was set to the lowest 1GB to cope with the Raspberry Pi 4 limitations, to the detriment of other platforms. With these changes, the kernel scans the Device Tree dma-ranges and the ACPI IORT information before deciding on a smaller ZONE_DMA. - Strengthen READ_ONCE() to acquire when CONFIG_LTO=y. When building with LTO, there is an increased risk of the compiler converting an address dependency headed by a READ_ONCE() invocation into a control dependency and consequently allowing for harmful reordering by the CPU. - Add CPPC FFH support using arm64 AMU counters. - set_fs() removal on arm64. This renders the User Access Override (UAO) ARMv8 feature unnecessary. - Perf updates: PMU driver for the ARM DMC-620 memory controller, sysfs identifier file for SMMUv3, stop event counters support for i.MX8MP, enable the perf events-based hard lockup detector. - Reorganise the kernel VA space slightly so that 52-bit VA configurations can use more virtual address space. - Improve the robustness of the arm64 memory offline event notifier. - Pad the Image header to 64K following the EFI header definition updated recently to increase the section alignment to 64K. - Support CONFIG_CMDLINE_EXTEND on arm64. - Do not use tagged PC in the kernel (TCR_EL1.TBID1==1), freeing up 8 bits for PtrAuth. - Switch to vmapped shadow call stacks. - Miscellaneous clean-ups. * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (78 commits) perf/imx_ddr: Add system PMU identifier for userspace bindings: perf: imx-ddr: add compatible string arm64: Fix build failure when HARDLOCKUP_DETECTOR_PERF is enabled arm64: mte: fix prctl(PR_GET_TAGGED_ADDR_CTRL) if TCF0=NONE arm64: mark __system_matches_cap as __maybe_unused arm64: uaccess: remove vestigal UAO support arm64: uaccess: remove redundant PAN toggling arm64: uaccess: remove addr_limit_user_check() arm64: uaccess: remove set_fs() arm64: uaccess cleanup macro naming arm64: uaccess: split user/kernel routines arm64: uaccess: refactor __{get,put}_user arm64: uaccess: simplify __copy_user_flushcache() arm64: uaccess: rename privileged uaccess routines arm64: sdei: explicitly simulate PAN/UAO entry arm64: sdei: move uaccess logic to arch/arm64/ arm64: head.S: always initialize PSTATE arm64: head.S: cleanup SCTLR_ELx initialization arm64: head.S: rename el2_setup -> init_kernel_el arm64: add C wrappers for SET_PSTATE_*() ...
2020-12-14Merge branch 'linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "API: - Add speed testing on 1420-byte blocks for networking Algorithms: - Improve performance of chacha on ARM for network packets - Improve performance of aegis128 on ARM for network packets Drivers: - Add support for Keem Bay OCS AES/SM4 - Add support for QAT 4xxx devices - Enable crypto-engine retry mechanism in caam - Enable support for crypto engine on sdm845 in qce - Add HiSilicon PRNG driver support" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (161 commits) crypto: qat - add capability detection logic in qat_4xxx crypto: qat - add AES-XTS support for QAT GEN4 devices crypto: qat - add AES-CTR support for QAT GEN4 devices crypto: atmel-i2c - select CONFIG_BITREVERSE crypto: hisilicon/trng - replace atomic_add_return() crypto: keembay - Add support for Keem Bay OCS AES/SM4 dt-bindings: Add Keem Bay OCS AES bindings crypto: aegis128 - avoid spurious references crypto_aegis128_update_simd crypto: seed - remove trailing semicolon in macro definition crypto: x86/poly1305 - Use TEST %reg,%reg instead of CMP $0,%reg crypto: x86/sha512 - Use TEST %reg,%reg instead of CMP $0,%reg crypto: aesni - Use TEST %reg,%reg instead of CMP $0,%reg crypto: cpt - Fix sparse warnings in cptpf hwrng: ks-sa - Add dependency on IOMEM and OF crypto: lib/blake2s - Move selftest prototype into header file crypto: arm/aes-ce - work around Cortex-A57/A72 silion errata crypto: ecdh - avoid unaligned accesses in ecdh_set_secret() crypto: ccree - rework cache parameters handling crypto: cavium - Use dma_set_mask_and_coherent to simplify code crypto: marvell/octeontx - Use dma_set_mask_and_coherent to simplify code ...
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