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* MIPS: uaccess: Take EVA into account in [__]clear_userJames Hogan2015-12-221-0/+2
| | | | | | | | | | | | | | | | | | __clear_user() (and clear_user() which uses it), always access the user mode address space, which results in EVA store instructions when EVA is enabled even if the current user address limit is KERNEL_DS. Fix this by adding a new symbol __bzero_kernel for the normal kernel address space bzero in EVA mode, and call that from __clear_user() if eva_kernel_access(). Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Leonid Yegoshin <leonid.yegoshin@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/10844/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge branch 'mipsr6-for-3.20' of ↵Ralf Baechle2015-02-191-0/+2
|\ | | | | | | git://git.linux-mips.org/pub/scm/mchandras/linux into mips-for-linux-next
| * MIPS: Use generic checksum functions for MIPS R6Markos Chandras2015-02-171-0/+2
| | | | | | | | | | | | | | | | | | | | | | The following instructions have been removed from MIPS R6 ulw, ulh, swl, lwr, lwl, swr. However, all of them are used in the MIPS specific checksum implementation. As a result of which, we will use the generic checksum on MIPS R6 Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
* | MIPS: Export MSA functions used by lose_fpu(1) for KVMJames Hogan2015-02-191-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Export the _save_msa asm function used by the lose_fpu(1) macro to GPL modules so that KVM can make use of it when it is built as a module. This fixes the following build error when CONFIG_KVM=m and CONFIG_CPU_HAS_MSA=y due to commit f798217dfd03 ("KVM: MIPS: Don't leak FPU/DSP to guest"): ERROR: "_save_msa" [arch/mips/kvm/kvm.ko] undefined! Fixes: f798217dfd03 (KVM: MIPS: Don't leak FPU/DSP to guest) Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Gleb Natapov <gleb@kernel.org> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: <stable@vger.kernel.org> # 3.15+ Patchwork: https://patchwork.linux-mips.org/patch/9261/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | MIPS: Export FP functions used by lose_fpu(1) for KVMJames Hogan2015-02-191-0/+6
|/ | | | | | | | | | | | | | | | | | | | | | Export the _save_fp asm function used by the lose_fpu(1) macro to GPL modules so that KVM can make use of it when it is built as a module. This fixes the following build error when CONFIG_KVM=m due to commit f798217dfd03 ("KVM: MIPS: Don't leak FPU/DSP to guest"): ERROR: "_save_fp" [arch/mips/kvm/kvm.ko] undefined! Signed-off-by: James Hogan <james.hogan@imgtec.com> Fixes: f798217dfd03 (KVM: MIPS: Don't leak FPU/DSP to guest) Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Gleb Natapov <gleb@kernel.org> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: <stable@vger.kernel.org> # 3.10+ Patchwork: https://patchwork.linux-mips.org/patch/9260/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Remove __strlen_user().Ralf Baechle2014-11-241-4/+0
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: checksum: Split the 'copy_user' symbolMarkos Chandras2014-03-261-1/+3
| | | | | | | | | | | | The 'copy_user' symbol can be used to copy from or to userland so we will use two different symbols for these operations. This makes no difference in the existing code, but when the core is operating in EVA mode, different instructions need to be used to read and write to userland address space. The old function has also been renamed to 'copy_kernel' to denote that it is suitable for copy data to and from kernel space. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
* MIPS: lib: memcpy: Add EVA supportMarkos Chandras2014-03-261-0/+6
| | | | | | | | | | Add copy_{to,from,in}_user when the CPU operates in EVA mode. This is necessary so the EVA specific instructions can be used to perform the virtual to physical translation for user space addresses. We will use the non-EVA functions to read from kernel if needed. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
* MIPS: lib: strncpy_user: Add EVA supportMarkos Chandras2014-03-261-0/+6
| | | | | | | | | In non-EVA mode, strncpy_from_user* aliases are used for the strncpy_from_kernel* symbols since the code is identical. In EVA mode, new strcpy_from_user* symbols are used which use the EVA specific instructions to load values from userspace. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
* MIPS: lib: strlen_user: Add EVA supportMarkos Chandras2014-03-261-0/+4
| | | | | | | | | In non-EVA mode, strlen_user* aliases are used for the strlen_kernel* symbols since the code is identical. In EVA mode, new strlen_user* symbols are used which use the EVA specific instructions to load values from userspace. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
* MIPS: lib: strnlen_user: Add EVA supportMarkos Chandras2014-03-261-0/+4
| | | | | | | | | In non-EVA mode, a strlen_user* alias is used for the strlen_kernel* symbols since the code is identical. In EVA mode, a new strlen_user* symbol is used which uses the EVA specific instructions to load values from userspace. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
* MIPS: Whitespace cleanup.Ralf Baechle2013-02-011-2/+2
| | | | | | | | Having received another series of whitespace patches I decided to do this once and for all rather than dealing with this kind of patches trickling in forever. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2012-12-141-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MIPS updates from Ralf Baechle: "The MIPS bits for 3.8. This also includes a bunch fixes that were sitting in the linux-mips.org git tree for a long time. This pull request contains updates to several OCTEON drivers and the board support code for BCM47XX, BCM63XX, XLP, XLR, XLS, lantiq, Loongson1B, updates to the SSB bus support, MIPS kexec code and adds support for kdump. When pulling this, there are two expected merge conflicts in include/linux/bcma/bcma_driver_chipcommon.h which are trivial to resolve, just remove the conflict markers and keep both alternatives." * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (90 commits) MIPS: PMC-Sierra Yosemite: Remove support. VIDEO: Newport Fix console crashes MIPS: wrppmc: Fix build of PCI code. MIPS: IP22/IP28: Fix build of EISA code. MIPS: RB532: Fix build of prom code. MIPS: PowerTV: Fix build. MIPS: IP27: Correct fucked grammar in ops-bridge.c MIPS: Highmem: Fix build error if CONFIG_DEBUG_HIGHMEM is disabled MIPS: Fix potencial corruption MIPS: Fix for warning from FPU emulation code MIPS: Handle COP3 Unusable exception as COP1X for FP emulation MIPS: Fix poweroff failure when HOTPLUG_CPU configured. MIPS: MT: Fix build with CONFIG_UIDGID_STRICT_TYPE_CHECKS=y MIPS: Remove unused smvp.h MIPS/EDAC: Improve OCTEON EDAC support. MIPS: OCTEON: Add definitions for OCTEON memory contoller registers. MIPS: OCTEON: Add OCTEON family definitions to octeon-model.h ata: pata_octeon_cf: Use correct byte order for DMA in when built little-endian. MIPS/OCTEON/ata: Convert pata_octeon_cf.c to use device tree. MIPS: Remove usage of CEVT_R4K_LIB config option. ...
| * MIPS: Transparent Huge Pages supportRalf Baechle2012-12-121-1/+1
| | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | mips: switch to generic kernel_thread()Al Viro2012-10-141-2/+0
|/ | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* MIPS: Refactor 'clear_page' and 'copy_page' functions.Steven J. Hill2012-07-191-1/+7
| | | | | | | | | | | | | | | | | Remove usage of the '__attribute__((alias("...")))' hack that aliased to integer arrays containing micro-assembled instructions. This hack breaks when building a microMIPS kernel. It also makes the code much easier to understand. [ralf@linux-mips.org: Added back export of the clear_page and copy_page symbols so certain modules will work again. Also fixed build with CONFIG_SIBYTE_DMA_PAGEOPS enabled.] Signed-off-by: Steven J. Hill <sjhill@mips.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3866/ Acked-by: David Daney <david.daney@cavium.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* mips: migrate core kernel file from module.h --> export.hPaul Gortmaker2011-10-311-1/+1
| | | | | | | | These files are not modules, but were including module.h only for EXPORT_SYMBOL and/or THIS_MODULE. Now that we have the lightweight export.h, use it in these kinds of cases. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* MIPS: Tracing: Add static function tracer support for MIPSWu Zhangjin2009-12-171-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | If -pg of gcc is enabled with CONFIG_FUNCTION_TRACER=y. a calling to _mcount will be inserted into each kernel function. so, there is a possibility to trace the kernel functions in _mcount. This patch add the MIPS specific _mcount support for static function tracing. by default, ftrace_trace_function is initialized as ftrace_stub(an empty function), so, the default _mcount will introduce very little overhead. after enabling ftrace in user-space, it will jump to a real tracing function and do static function tracing for us. and -ffunction-sections is incompatible with -pg, so, disable it when ftracer is enabled. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Cc: Nicholas Mc Guire <der.herr@hofr.at> Cc: zhangfx@lemote.com Cc: Wu Zhangjin <wuzhangjin@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/672/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Export __copy_user_inatomic.Ralf Baechle2007-03-071-0/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] csum_partial and copy in parallelAtsushi Nemoto2007-01-081-0/+2
| | | | | | | | | Implement optimized asm version of csum_partial_copy_nocheck, csum_partial_copy_from_user and csum_and_copy_to_user which can do calculate and copy in parallel, based on memcpy.S. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-301-1/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [MIPS] Sort out duplicate exports.Ralf Baechle2006-04-191-15/+0
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [PATCH] No arch-specific strpbrk implementationsKyle McMartin2006-04-111-1/+0
| | | | | | | | | | | | | | | While cleaning up parisc_ksyms.c earlier, I noticed that strpbrk wasn't being exported from lib/string.c. Investigating further, I noticed a changeset that removed its export and added it to _ksyms.c on a few more architectures. The justification was that "other arches do it." I think this is wrong, since no architecture currently defines __HAVE_ARCH_STRPBRK, there's no reason for any of them to be exporting it themselves. Therefore, consolidate the export to lib/string.c. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mips: clean up 32/64-bit configurationRalf Baechle2005-09-051-1/+1
| | | | | | | | Start cleaning 32-bit vs. 64-bit configuration. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2Linus Torvalds2005-04-161-0/+67
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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