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* Merge branch 'parisc-4.21-1' of ↵Linus Torvalds2018-12-2619-920/+648
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc updates from Helge Deller: "The major change in this patchset is the new system call table generation support from Firoz Khan" * 'parisc-4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: syscalls: ignore nfsservctl for other architectures parisc: generate uapi header and system call table files parisc: add system call table generation support parisc: remove __NR_Linux from uapi header file. parisc: add __NR_syscalls along with __NR_Linux_syscalls parisc: move __IGNORE* entries to non uapi header parisc: Fix HP SDC hpa address output parisc: Fix serio address output parisc: Split out alternative live patching code
| * parisc: syscalls: ignore nfsservctl for other architecturesFiroz Khan2018-12-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds an exception to the syscall table checking script. nfsservctl entry is only provided on x86, and there is no reason to add it elsewhere. However, including it on the syscall table caused a warning for most configurations on non-x86. <stdin>:696:2: warning: #warning syscall nfsservctl not implemented [-Wcpp] Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de>
| * parisc: generate uapi header and system call table filesFiroz Khan2018-12-106-827/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | System call table generation script must be run to gener- ate unistd_32/64.h and syscall_table_32/64/c32.h files. This patch will have changes which will invokes the script. This patch will generate unistd_32/64.h and syscall_table- _32/64/c32.h files by the syscall table generation script invoked by parisc/Makefile and the generated files against the removed files must be identical. The generated uapi header file will be included in uapi/- asm/unistd.h and generated system call table header file will be included by kernel/syscall.S file. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de>
| * parisc: add system call table generation supportFiroz Khan2018-12-104-0/+496
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The system call tables are in different format in all architecture and it will be difficult to manually add, modify or delete the syscall table entries in the res- pective files. To make it easy by keeping a script and which will generate the uapi header and syscall table file. This change will also help to unify the implemen- tation across all architectures. The system call table generation script is added in kernel/syscalls directory which contain the scripts to generate both uapi header file and system call table files. The syscall.tbl will be input for the scripts. syscall.tbl contains the list of available system calls along with system call number and corresponding entry point. Add a new system call in this architecture will be possible by adding new entry in the syscall.tbl file. Adding a new table entry consisting of: - System call number. - ABI. - System call name. - Entry point name. - Compat entry name, if required. syscallhdr.sh and syscalltbl.sh will generate uapi header unistd_32/64.h and syscall_table_32/64/c32.h files respect- ively. Both .sh files will parse the content syscall.tbl to generate the header and table files. unistd_32/64.h will be included by uapi/asm/unistd.h and syscall_table_32/64/- c32.h is included by kernel/syscall.S - the real system call table. ARM, s390 and x86 architecuture does have similar support. I leverage their implementation to come up with a generic solution. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de>
| * parisc: remove __NR_Linux from uapi header file.Firoz Khan2018-12-101-352/+351
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The __NR_Linux defined as 0 to support HP-UX syscalls along with an offset to other system call. But support for HP-UX is gone and there is no need to define __NR_Linux as 0. One of the patch in this patch series will generate uapi header file which does have offset logic support. But here the offset value __NR_Linux defined as 0 and it doesn't make much effect. So remove the offset __NR_Linux from uapi header file. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de>
| * parisc: add __NR_syscalls along with __NR_Linux_syscallsFiroz Khan2018-12-102-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __NR_Linux_syscalls macro holds the number of system call exist in parisc architecture. We have to change the value of __NR_Linux_syscalls, if we add or delete a system call. One of the patch in this patch series has a script which will generate a uapi header based on syscall.tbl file. The syscall.tbl file contains the total number of system calls information. So we have two option to update __NR- _Linux_syscalls value. 1. Update __NR_Linux_syscalls in asm/unistd.h manually by counting the no.of system calls. No need to update __NR- _Linux_syscalls until we either add a new system call or delete existing system call. 2. We can keep this feature it above mentioned script, that will count the number of syscalls and keep it in a generated file. In this case we don't need to expli- citly update __NR_Linux_syscalls in asm/unistd.h file. The 2nd option will be the recommended one. For that, I added the __NR_syscalls macro in uapi/asm/unistd.h along with __NR_Linux_syscalls asm/unistd.h. The macro __NR_sys- calls also added for making the name convention same across all architecture. While __NR_syscalls isn't strictly part of the uapi, having it as part of the generated header to simplifies the implementation. We also need to enclose this macro with #ifdef __KERNEL__ to avoid side effects. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de>
| * parisc: move __IGNORE* entries to non uapi headerFiroz Khan2018-12-102-7/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All the __IGNORE* entries are resides in the uapi header file move to non uapi header asm/unistd.h as it is not used by any user space applications. It is correct to keep __IGNORE* entry in non uapi header asm/unistd.h while uapi/asm/unistd.h must hold information only useful for user space applications. One of the patch in this patch series will generate uapi header file. The information which directly used by the user space application must be present in uapi file. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de>
| * parisc: Fix HP SDC hpa address outputHelge Deller2018-12-101-2/+2
| | | | | | | | | | | | | | Show the hpa address of the HP SDC instead of a hashed value, e.g.: HP SDC: HP SDC at 0xf0201000, IRQ 23 (NMI IRQ 24) Signed-off-by: Helge Deller <deller@gmx.de>
| * parisc: Fix serio address outputHelge Deller2018-12-101-2/+2
| | | | | | | | | | | | | | | | | | | | We want the hpa addresses printed in the serio modules, not some virtual ioremap()ed address, e.g.: serio: gsc-ps2-keyboard port at 0xf0108000 irq 22 @ 2:0:11 serio: gsc-ps2-mouse port at 0xf0108100 irq 22 @ 2:0:12 Signed-off-by: Helge Deller <deller@gmx.de>
| * parisc: Split out alternative live patching codeHelge Deller2018-12-105-81/+117
| | | | | | | | | | | | | | Move the alternative implemenation coding to alternative.c and add code to patch modules while loading. Signed-off-by: Helge Deller <deller@gmx.de>
* | Merge tag 'mips_4.21' of ↵Linus Torvalds2018-12-26221-25473/+4299
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS updates from Paul Burton: "Here's the main MIPS pull for Linux 4.21. Core architecture changes include: - Syscall tables & definitions for unistd.h are now generated by scripts, providing greater consistency with other architectures & making it easier to add new syscalls. - Support for building kernels with no floating point support, upon which any userland attempting to use floating point instructions will receive a SIGILL. Mostly useful to shrink the kernel & as preparation for nanoMIPS support which does not yet include FP. - MIPS SIMD Architecture (MSA) vector register context is now exposed by ptrace via a new NT_MIPS_MSA regset. - ASIDs are now stored as 64b values even for MIPS32 kernels, expanding the ASID version field sufficiently that we don't need to worry about overflow & avoiding rare issues with reused ASIDs that have been observed in the wild. - The branch delay slot "emulation" page is now mapped without write permission for the user, preventing its use as a nice location for attacks to execute malicious code from. - Support for ioremap_prot(), primarily to allow gdb or other ptrace users the ability to view their tracee's memory using the same cache coherency attribute. - Optimizations to more cpu_has_* macros, allowing more to be compile-time constant where possible. - Enable building the whole kernel with UBSAN instrumentation. - Enable building the kernel with link-time dead code & data elimination. Platform specific changes include: - The Boston board gains a workaround for DMA prefetching issues with the EG20T Platform Controller Hub that it uses. - Cleanups to Cavium Octeon code removing about 20k lines of redundant code, mostly unused or duplicate register definitions in headers. - defconfig updates for the DECstation machines, including new defconfigs for r4k & 64b machines. - Further work on Loongson 3 support. - DMA fixes for SiByte machines" * tag 'mips_4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (95 commits) MIPS: math-emu: Write-protect delay slot emulation pages MIPS: Remove struct mm_context_t fp_mode_switching field mips: generate uapi header and system call table files mips: add system call table generation support mips: remove syscall table entries mips: add +1 to __NR_syscalls in uapi header mips: rename scall64-64.S to scall64-n64.S mips: remove unused macros mips: add __NR_syscalls along with __NR_Linux_syscalls MIPS: Expand MIPS32 ASIDs to 64 bits MIPS: OCTEON: delete redundant register definitions MIPS: OCTEON: cvmx_gmxx_inf_mode: use oldest forward compatible definition MIPS: OCTEON: cvmx_mio_fus_dat3: use oldest forward compatible definition MIPS: OCTEON: cvmx_pko_mem_debug8: use oldest forward compatible definition MIPS: OCTEON: octeon-usb: use common gpio_bit definition MIPS: OCTEON: enable all OCTEON drivers in defconfig mips: annotate implicit fall throughs MIPS: Hardcode cpu_has_mips* where target ISA allows MIPS: MT: Remove norps command line parameter MIPS: Only include mmzone.h when CONFIG_NEED_MULTIPLE_NODES=y ...
| * | MIPS: math-emu: Write-protect delay slot emulation pagesPaul Burton2018-12-202-20/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mapping the delay slot emulation page as both writeable & executable presents a security risk, in that if an exploit can write to & jump into the page then it can be used as an easy way to execute arbitrary code. Prevent this by mapping the page read-only for userland, and using access_process_vm() with the FOLL_FORCE flag to write to it from mips_dsemul(). This will likely be less efficient due to copy_to_user_page() performing cache maintenance on a whole page, rather than a single line as in the previous use of flush_cache_sigtramp(). However this delay slot emulation code ought not to be running in any performance critical paths anyway so this isn't really a problem, and we can probably do better in copy_to_user_page() anyway in future. A major advantage of this approach is that the fix is small & simple to backport to stable kernels. Reported-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Paul Burton <paul.burton@mips.com> Fixes: 432c6bacbd0c ("MIPS: Use per-mm page to execute branch delay slot instructions") Cc: stable@vger.kernel.org # v4.8+ Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Rich Felker <dalias@libc.org> Cc: David Daney <david.daney@cavium.com>
| * | MIPS: Remove struct mm_context_t fp_mode_switching fieldPaul Burton2018-12-172-7/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The fp_mode_switching field in struct mm_context_t was left unused by commit 8c8d953c2800 ("MIPS: Schedule on CPUs we need to lose FPU for a mode switch") in v4.19, with nothing modifying its value & nothing waiting on it having any particular value after that commit. Remove the unused field & the one remaining reference to it. Signed-off-by: Paul Burton <paul.burton@mips.com>
| * | mips: generate uapi header and system call table filesFiroz Khan2018-12-149-2467/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | System call table generation script must be run to gener- ate unistd_(nr_)n64/n32/o32.h and syscall_table_32_o32/ 64_n64/64_n32/64-o32.h files. This patch will have changes which will invokes the script. This patch will generate unistd_(nr_)n64/n32/o32.h and syscall_table_32_o32/64_n64/64-n32/64-o32.h files by the syscall table generation script invoked by parisc/Make- file and the generated files against the removed files must be identical. The generated uapi header file will be included in uapi/- asm/unistd.h and generated system call table header file will be included by kernel/scall32-o32/64-n64/64-n32/- 64-o32.Sfile. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: y2038@lists.linaro.org Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: arnd@arndb.de Cc: deepa.kernel@gmail.com Cc: marcin.juszkiewicz@linaro.org
| * | mips: add system call table generation supportFiroz Khan2018-12-147-0/+1261
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The system call tables are in different format in all architecture and it will be difficult to manually add, modify or delete the syscall table entries in the res- pective files. To make it easy by keeping a script and which will generate the uapi header and syscall table file. This change will also help to unify the implemen- tation across all architectures. The system call table generation script is added in kernel/syscalls directory which contain the scripts to generate both uapi header file and system call table files. The syscall.tbl will be input for the scripts. syscall.tbl contains the list of available system calls along with system call number and corresponding entry point. Add a new system call in this architecture will be possible by adding new entry in the syscall.tbl file. Adding a new table entry consisting of: - System call number. - ABI. - System call name. - Entry point name. - Compat entry name, if required. syscallhdr.sh, syscallnr.sh and syscalltbl.sh will gene- rate uapi header unistd_n64/n32/o32.h, unistd_nr_n64/n32/- o32.h and syscall_table_32_o32/64_n64/64-n32/64-o32.h files respectively. All *.sh files will parse the content sys- call.tbl to generate the header and table files. unistd- _n64/n32/o32.h and unistd_nr_n64/n32/o32.h will be included by uapi/asm/unistd.h and syscall_table_32_o32/64_n64/64-n32- /64-o32.h is included by kernel/syscall_table32_o32/64- _n64/64-n32/64-o32.S - the real system call table. ARM, s390 and x86 architecuture does have similar support. I leverage their implementation to come up with a generic solution. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> [paul.burton@mips.com: - Change sysnr_pfx_unistd_nr_n64 to 64.] Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: y2038@lists.linaro.org Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: arnd@arndb.de Cc: deepa.kernel@gmail.com Cc: marcin.juszkiewicz@linaro.org
| * | mips: remove syscall table entriesFiroz Khan2018-12-141-12/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The config flag - CONFIG_MIPS_MT_FPAFF uses to check whether which syscall entries need to be used in scall32-o32.S file. One of the patch in this patch series will generate syscall table file. But CONFIG_MIPS_MT_FPAFF flag will add more complexity in the script to generate the syscall table file. In order to come up with a common implementation across all archit- ecture, we need to remove mipsmt_sys_sched_setaffinity and mipsmt- _sys_sched_getaffinity from the table and define it in other way. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: y2038@lists.linaro.org Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: arnd@arndb.de Cc: deepa.kernel@gmail.com Cc: marcin.juszkiewicz@linaro.org
| * | mips: add +1 to __NR_syscalls in uapi headerFiroz Khan2018-12-146-17/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All other architectures are hold a value for __NR_syscalls will be equal to the last system call number +1. But in mips architecture, __NR_syscalls hold the value equal to total number of system exits in the architecture. One of the patch in this patch series will genarate uapi header files. In order to make the implementation common across all architect- ures, add +1 to __NR_syscalls, which will be equal to the last system call number +1. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: y2038@lists.linaro.org Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: arnd@arndb.de Cc: deepa.kernel@gmail.com Cc: marcin.juszkiewicz@linaro.org
| * | mips: rename scall64-64.S to scall64-n64.SFiroz Khan2018-12-142-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we get nanoMIPS support we'll be introducing the p32 ABI, and there's a reasonable chance that the equivalent p64 ABI may come along in the future. Using 'n64' now would avoid confusion in that case where we may have 2 different 64-bit ABIs. Suggested-by: Paul Burton <paul.burton@mips.com> Signed-off-by: Firoz Khan <firoz.khan@linaro.org> [paul.burton@mips.com: - Remove UAPI macro renaming, github code search shows at least the chromium project uses __NR_64_Linux & __NR_64_Linux_syscalls.] Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: y2038@lists.linaro.org Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: arnd@arndb.de Cc: deepa.kernel@gmail.com Cc: marcin.juszkiewicz@linaro.org
| * | mips: remove unused macrosFiroz Khan2018-12-142-18/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove __NR_Linux_syscalls from uapi/asm/unistd.h as there is no users to use NR_syscalls macro in mips kernel. MAX_SYSCALL_NO can also remove as there is commit 2957c9e61ee9 ("[MIPS] IRIX: Goodbye and thanks for all the fish"), eight years ago. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> [paul.burton@mips.com: - Drop the removal of NR_syscalls which is used by kernel/trace/trace.h.] Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: y2038@lists.linaro.org Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: arnd@arndb.de Cc: deepa.kernel@gmail.com Cc: marcin.juszkiewicz@linaro.org
| * | mips: add __NR_syscalls along with __NR_Linux_syscallsFiroz Khan2018-12-131-3/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __NR_Linux_syscalls macro holds the number of system call exist in mips architecture. We have to change the value of __NR_Linux_syscalls, if we add or delete a system call. One of the patch in this patch series has a script which will generate a uapi header based on syscall.tbl file. The syscall.tbl file contains the total number of system calls information. So we have two option to update __NR- _Linux_syscalls value. 1. Update __NR_Linux_syscalls in asm/unistd.h manually by counting the no.of system calls. No need to update __NR_Linux_syscalls until we either add a new system call or delete existing system call. 2. We can keep this feature it above mentioned script, that will count the number of syscalls and keep it in a generated file. In this case we don't need to expli- citly update __NR_Linux_syscalls in asm/unistd.h file. The 2nd option will be the recommended one. For that, I added the __NR_syscalls macro in uapi/asm/unistd.h along with __NR_Linux_syscalls. The macro __NR_syscalls also added for making the name convention same across all architecture. While __NR_syscalls isn't strictly part of the uapi, having it as part of the generated header to simplifies the implementation. We also need to enclose this macro with #ifdef __KERNEL__ to avoid side effects. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: y2038@lists.linaro.org Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: arnd@arndb.de Cc: deepa.kernel@gmail.com Cc: marcin.juszkiewicz@linaro.org
| * | MIPS: Expand MIPS32 ASIDs to 64 bitsPaul Burton2018-12-054-9/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ASIDs have always been stored as unsigned longs, ie. 32 bits on MIPS32 kernels. This is problematic because it is feasible for the ASID version to overflow & wrap around to zero. We currently attempt to handle this overflow by simply setting the ASID version to 1, using asid_first_version(), but we make no attempt to account for the fact that there may be mm_structs with stale ASIDs that have versions which we now reuse due to the overflow & wrap around. Encountering this requires that: 1) A struct mm_struct X is active on CPU A using ASID (V,n). 2) That mm is not used on CPU A for the length of time that it takes for CPU A's asid_cache to overflow & wrap around to the same version V that the mm had in step 1. During this time tasks using the mm could either be sleeping or only scheduled on other CPUs. 3) Some other mm Y becomes active on CPU A and is allocated the same ASID (V,n). 4) mm X now becomes active on CPU A again, and now incorrectly has the same ASID as mm Y. Where struct mm_struct ASIDs are represented above in the format (version, EntryHi.ASID), and on a typical MIPS32 system version will be 24 bits wide & EntryHi.ASID will be 8 bits wide. The length of time required in step 2 is highly dependent upon the CPU & workload, but for a hypothetical 2GHz CPU running a workload which generates a new ASID every 10000 cycles this period is around 248 days. Due to this long period of time & the fact that tasks need to be scheduled in just the right (or wrong, depending upon your inclination) way, this is obviously a difficult bug to encounter but it's entirely possible as evidenced by reports. In order to fix this, simply extend ASIDs to 64 bits even on MIPS32 builds. This will extend the period of time required for the hypothetical system above to encounter the problem from 28 days to around 3 trillion years, which feels safely outside of the realms of possibility. The cost of this is slightly more generated code in some commonly executed paths, but this is pretty minimal: | Code Size Gain | Percentage -----------------------|----------------|------------- decstation_defconfig | +270 | +0.00% 32r2el_defconfig | +652 | +0.01% 32r6el_defconfig | +1000 | +0.01% I have been unable to measure any change in performance of the LMbench lat_ctx or lat_proc tests resulting from the 64b ASIDs on either 32r2el_defconfig+interAptiv or 32r6el_defconfig+I6500 systems. Signed-off-by: Paul Burton <paul.burton@mips.com> Suggested-by: James Hogan <jhogan@kernel.org> References: https://lore.kernel.org/linux-mips/80B78A8B8FEE6145A87579E8435D78C30205D5F3@fzex.ruijie.com.cn/ References: https://lore.kernel.org/linux-mips/1488684260-18867-1-git-send-email-jiwei.sun@windriver.com/ Cc: Jiwei Sun <jiwei.sun@windriver.com> Cc: Yu Huabing <yhb@ruijie.com.cn> Cc: stable@vger.kernel.org # 2.6.12+ Cc: linux-mips@vger.kernel.org
| * | MIPS: OCTEON: delete redundant register definitionsAaro Koskinen2018-12-0432-7920/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For most OCTEON SoCs there is a repeated and redundant register definition for almost every hardware register, although the register bit fields would not differ from other SoCs. Since the driver code should use only one definition for simplicity, these other fields are just redundant and can be deleted. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org
| * | MIPS: OCTEON: cvmx_gmxx_inf_mode: use oldest forward compatible definitionAaro Koskinen2018-12-042-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use oldest forward compatible definition. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org
| * | MIPS: OCTEON: cvmx_mio_fus_dat3: use oldest forward compatible definitionAaro Koskinen2018-12-041-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Chips up to cn5xxx are compatible with cn38xx. All cn6xxx chips, and also cnf71xx, are compatible with cn61xx. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org
| * | MIPS: OCTEON: cvmx_pko_mem_debug8: use oldest forward compatible definitionAaro Koskinen2018-12-042-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cn58xx is compatible with cn50xx, so use the latter. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> [paul.burton@mips.com: s/cn52xx/cn50xx/ in commit message.] Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org
| * | MIPS: OCTEON: octeon-usb: use common gpio_bit definitionAaro Koskinen2018-12-041-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cvmx_gpio_bit_cfgx bitfields are indentical on cn70xx and cn73xx, and also match the default definition. So use that instead. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org
| * | MIPS: OCTEON: enable all OCTEON drivers in defconfigAaro Koskinen2018-12-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable all OCTEON drivers in defconfig. Currently oct_ilm and octeon-rng are still missing; enable those to get them included in kernel builds. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org
| * | mips: annotate implicit fall throughsMathieu Malaterre2018-12-035-0/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a plan to build the kernel with -Wimplicit-fallthrough and these places in the code produced warnings. Fix them up. This patch produces no change in behaviour, but should be reviewed in case these are actually bugs not intentional fallthoughs. Signed-off-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Kees Cook <keescook@google.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
| * | MIPS: Hardcode cpu_has_mips* where target ISA allowsPaul Burton2018-11-261-11/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the same vein as commit 93e01942a6eb ("MIPS: Hardcode cpu_has_* where known at compile time due to ISA"), we can use our knowledge of the ISA being targeted by the kernel build to make cpu_has_mips* macros compile-time constant in some cases. This allows the compiler greater opportunity to optimize out code which will never execute. Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21245/ Cc: linux-mips@linux-mips.org
| * | MIPS: MT: Remove norps command line parameterPaul Burton2018-11-261-11/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The "norps" kernel command line parameter has apparently been deprecated ever since it was added to the kernel back in 2006 - all it does is print a message telling the user to use something else. Remove the long dead "norps" parameter. Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21244/ Cc: linux-mips@linux-mips.org
| * | MIPS: Only include mmzone.h when CONFIG_NEED_MULTIPLE_NODES=yPaul Burton2018-11-212-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MIPS' asm/mmzone.h includes the machine/platform mmzone.h unconditionally, but since commit bb53fdf395ee ("MIPS: c-r4k: Add r4k_blast_scache_node for Loongson-3") is included by asm/rk4cache.h for all r4k-style configs regardless of CONFIG_NEED_MULTIPLE_NODES. This is problematic when CONFIG_NEED_MULTIPLE_NODES=n because both the loongson3 & ip27 mmzone.h headers unconditionally define the NODE_DATA preprocessor macro which is aready defined by linux/mmzone.h, resulting in the following build error: In file included from ./arch/mips/include/asm/mmzone.h:10, from ./arch/mips/include/asm/r4kcache.h:23, from arch/mips/mm/c-r4k.c:33: ./arch/mips/include/asm/mach-loongson64/mmzone.h:48: error: "NODE_DATA" redefined [-Werror] #define NODE_DATA(n) (&__node_data[(n)]->pglist) In file included from ./include/linux/topology.h:32, from ./include/linux/irq.h:19, from ./include/asm-generic/hardirq.h:13, from ./arch/mips/include/asm/hardirq.h:16, from ./include/linux/hardirq.h:9, from arch/mips/mm/c-r4k.c:11: ./include/linux/mmzone.h:907: note: this is the location of the previous definition #define NODE_DATA(nid) (&contig_page_data) Resolve this by only including the machine mmzone.h when CONFIG_NEED_MULTIPLE_NODES=y, which also removes the need for the empty mach-generic version of the header which we delete. Signed-off-by: Paul Burton <paul.burton@mips.com> Fixes: bb53fdf395ee ("MIPS: c-r4k: Add r4k_blast_scache_node for Loongson-3")
| * | MIPS: Enable dead code eliminationPaul Burton2018-11-212-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Select CONFIG_HAVE_LD_DEAD_CODE_DATA_ELIMINATION for MIPS, allowing the user to enable dead code elimination. In order for this to work, ensure that we keep the data bus exception table & the machine list by annotating them with KEEP. This shrinks both 32r2el_defconfig & 64r6el_defconfig builds by ~6%, as shown by numbers from scripts/bloat-o-meter: | 32r2el_defconfig | 64r6el_defconfig --------|------------------|------------------ No DCE | 8919864 | 8286307 DCE | 8338988 (-6.51%) | 7741808 (-6.57%) Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21187/ Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: cvmx-ciu2-defs.h: delete unused unionsAaro Koskinen2018-11-211-6883/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete unused unions. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21201/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: cvmx-ciu2-defs.h: delete unused macrosAaro Koskinen2018-11-211-177/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete unused macros. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21199/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: cvmx-gmxx-defs.h: use default register value return when possibleAaro Koskinen2018-11-211-376/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we are about to return the same register address that would be the default anyway, fallback to default return instead of adding a case label. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21200/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: cvmx-gmxx-defs.h: delete unused union fieldsAaro Koskinen2018-11-211-131/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When register definition is identical on all OCTEONs, we can trivially delete the model specific union fields. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21203/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: cvmx-gmxx-defs.h: delete unused unionsAaro Koskinen2018-11-211-2665/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete unused unions. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21197/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: gmxx-defs.h: delete unused functions and macrosAaro Koskinen2018-11-211-1356/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete unused functions and macros. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21198/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: delete cvmx override functionsAaro Koskinen2018-11-212-51/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete cmvx override functions, they are not used. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21196/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: cvmx-bootmem: make more functions staticAaro Koskinen2018-11-212-29/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make cvmx_bootmem_phy_named_block_find/free() static. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21190/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: cvmx-bootmem: move code to avoid forward declarationsAaro Koskinen2018-11-211-47/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move code to avoid forward declarations. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21193/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: cvmx-bootmem: delete unused functionsAaro Koskinen2018-11-212-45/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete unused functions. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21191/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: make cvmx_bootmem_alloc_range staticAaro Koskinen2018-11-212-18/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make cvmx_bootmem_alloc_range() static, it's not used outside the file. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21195/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: cvmx-helper-util: make cvmx_helper_setup_red_queue staticAaro Koskinen2018-11-212-16/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make cvmx_helper_setup_red_queue static, it's not used outside this file. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21194/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: cvmx-helper-util: delete cvmx_helper_dump_packetAaro Koskinen2018-11-212-95/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delete unused cvmx_helper_dump_packet(). Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21212/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: smp: make internal symbols staticAaro Koskinen2018-11-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make internal symbols static. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21192/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: csrc-octeon: include linux/sched/clock.hAaro Koskinen2018-11-211-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Include linux/sched/clock.h to get the declaration for sched_clock(). Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21189/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: octeon-irq: make octeon_irq_ciu3_set_affinity() staticAaro Koskinen2018-11-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make octeon_irq_ciu3_set_affinity() static. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21207/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: octeon-platform: fix typingAaro Koskinen2018-11-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use correct type for fdt_property nameoff field. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21204/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
| * | MIPS: OCTEON: octeon-platform: make octeon_ids staticAaro Koskinen2018-11-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make octeon_ids static. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21208/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org
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