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2015-03-30powerpc: Relax secure computing on syscall entry traceBogdan Purcareata
The secure_computing_strict will just force the kernel to panic on secure_computing failure. Once SECCOMP_FILTER support is enabled in the kernel, syscalls can be denied without system failure. v4: - rebase on top of 3.19 v3,v2: no changes Upstream-Status: Pending [https://lkml.org/lkml/2015/2/18/53] Signed-off-by: Bogdan Purcareata <bogdan.purcareata@freescale.com> Change-Id: Icd077291db86657edce29b8079696fc8e48e554e Reviewed-on: http://git.am.freescale.net:8181/33031 Tested-by: Honghua Yin <Hong-Hua.Yin@freescale.com> Reviewed-by: Honghua Yin <Hong-Hua.Yin@freescale.com>
2015-03-30drivers:usb:pm: Fix usb pm support for deep-sleepRamneek Mehresh
Make sure that saving and restoration of usb phy registers only happen in case of deep-sleep, and not for any other feature like sleep, etc. Also export pm_suspend_state() and set_pm_suspend_state() Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com> Change-Id: I2e08208c975ec7aee7ed42e7d424aaa8d14899e3 Reviewed-on: http://git.am.freescale.net:8181/33384 Reviewed-by: Nikhil Badola <nikhil.badola@freescale.com> Tested-by: Honghua Yin <Hong-Hua.Yin@freescale.com> Reviewed-by: Honghua Yin <Hong-Hua.Yin@freescale.com>
2015-03-30powerpc: Don't force ENOSYS as error on syscall failBogdan Purcareata
In certain scenarios - e.g. seccomp filtering with ERRNO as default action - the system call fails for other reasons than the syscall not being available. The seccomp filter can be configured to store a user-defined error code on return from a blacklisted syscall. Don't always set ENOSYS on do_syscall_trace_enter failure. Delegate setting ENOSYS in case of failure, where appropriate, to do_syscall_trace_enter. v4: - update syscall_exit to be local label on 64bit, after rebasing on top of 3.19 v3: - keep setting ENOSYS in the syscall entry assembly for scenarios without syscall tracing v2: - move setting ENOSYS as errno from the syscall entry assembly to do_syscall_trace_enter, only in the specific case Upstream-Status: Pending [https://lkml.org/lkml/2015/2/18/50] Signed-off-by: Bogdan Purcareata <bogdan.purcareata@freescale.com> Change-Id: I938a8754407a60c79fe9485cc76a6ec891e08e82 Reviewed-on: http://git.am.freescale.net:8181/33030 Reviewed-by: Scott Wood <scottwood@freescale.com> Tested-by: Honghua Yin <Hong-Hua.Yin@freescale.com> Reviewed-by: Honghua Yin <Hong-Hua.Yin@freescale.com>
2015-03-30powerpc/kernel: Make syscall_exit a local labelBogdan Purcareata
Currently when we back trace something that is in a syscall we see something like this: [c000000000000000] [c000000000000000] SyS_read+0x6c/0x110 [c000000000000000] [c000000000000000] syscall_exit+0x0/0x98 Although it's entirely correct, seeing syscall_exit at the bottom can be confusing - we were exiting from a syscall and then called SyS_read() ? If we instead change syscall_exit to be a local label we get something more intuitive: [c0000001fa46fde0] [c00000000026719c] SyS_read+0x6c/0x110 [c0000001fa46fe30] [c000000000009264] system_call+0x38/0xd0 ie. we were handling a system call, and it was SyS_read(). Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> (backported from commit 4c3b21686111e0ac6018469dacbc5549f9915cf8) Signed-off-by: Bogdan Purcareata <bogdan.purcareata@freescale.com> Change-Id: I2f04a5c9db260ffc36b95ce6ee48c50535053f7e Reviewed-on: http://git.am.freescale.net:8181/33028 Reviewed-by: Scott Wood <scottwood@freescale.com> Tested-by: Honghua Yin <Hong-Hua.Yin@freescale.com> Reviewed-by: Honghua Yin <Hong-Hua.Yin@freescale.com>
2015-03-20powerpc: Make boot_cpuid common between 32 and 64-bitBenjamin Herrenschmidt
Move the definition to setup-common.c and set the init value to -1 on both 32 and 64-bit (it was 0 on 64-bit). Additionally add a check to prom.c to garantee that the init value has been udpated after the DT scan. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Change-Id: I3aa6499dd65bfa5410d382880ca42f259906cdea Reviewed-on: http://git.am.freescale.net:8181/33084 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Honghua Yin <Hong-Hua.Yin@freescale.com>
2015-02-13Merge branch 'rtmerge'Scott Wood
Signed-off-by: Scott Wood <scottwood@freescale.com> Conflicts: arch/arm/kvm/mmu.c arch/arm/mm/proc-v7-3level.S arch/powerpc/kernel/vdso32/getcpu.S drivers/crypto/caam/error.c drivers/crypto/caam/sg_sw_sec4.h drivers/usb/host/ehci-fsl.c
2015-02-13powerpc-preempt-lazy-support.patchThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-02-13irq_work: allow certain work in hard irq contextSebastian Andrzej Siewior
irq_work is processed in softirq context on -RT because we want to avoid long latencies which might arise from processing lots of perf events. The noHZ-full mode requires its callback to be called from real hardirq context (commit 76c24fb ("nohz: New APIs to re-evaluate the tick on full dynticks CPUs")). If it is called from a thread context we might get wrong results for checks like "is_idle_task(current)". This patch introduces a second list (hirq_work_list) which will be used if irq_work_run() has been invoked from hardirq context and process only work items marked with IRQ_WORK_HARD_IRQ. This patch also removes arch_irq_work_raise() from sparc & powerpc like it is already done for x86. Atleast for powerpc it is somehow superfluous because it is called from the timer interrupt which should invoke update_process_times(). Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
2015-02-13softirq-disable-softirq-stacks-for-rt.patchThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-02-13Reset to 3.12.37Scott Wood
2014-12-11powerpc/fsl: Force coherent memory on e500mc derivativesScott Wood
In CoreNet systems it is not allowed to mix M and non-M mappings to the same memory, and coherent DMA accesses are considered to be M mappings for this purpose. Ignoring this has been observed to cause hard lockups in non-SMP kernels on e6500. Furthermore, e6500 implements the LRAT (logical to real address table) which allows KVM guests to control the WIMGE bits. This means that KVM cannot force the M bit on the way it usually does, so the guest had better set it itself. Signed-off-by: Scott Wood <scottwood@freescale.com> Change-Id: I083bdc9dd7990d475b8ae48680a8e63012998e93 Reviewed-on: http://git.am.freescale.net:8181/24841 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Mihai Caraman <mihai.caraman@freescale.com> Reviewed-by: Matthew Weigel <Matthew.Weigel@freescale.com>
2014-12-11powerpc/cache: add cluster shared L2 cache operation for e6500Zhang Zhuoyu
E6500 cluster shared L2 configuration and control uses the same general formats as the integrated backside L2 cache provided in previous Freescale cores. But L2 cache control is accomplished through MMRs instead of SPRs. This patch provides cluster shared L2 cache operations for e6500. Signed-off-by: Hongtao Jia <hongtao.jia@freescale.com> Signed-off-by: Zhang Zhuoyu <Zhuoyu.Zhang@freescale.com> Change-Id: I74d02c5bfda397723bb2feab251c7cc3c680105c Reviewed-on: http://git.am.freescale.net:8181/22314 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Yuantian Tang <yuantian.tang@freescale.com> Reviewed-by: Yang Li <LeoLi@freescale.com>
2014-12-11Fix e6500-based platform CPU hotplug issueZhang Zhuoyu
Fix thread 1 of core 0 online issue. Besides, put offline thread into PW10 state, give it a chance to enter PW20 state when threads of the same core are in PW10 state. Signed-off-by: Zhang Zhuoyu <Zhuoyu.Zhang@freescale.com> Change-Id: I9018c4499f02b79f2ec684798c54bf3cfe6723de Reviewed-on: http://git.am.freescale.net:8181/21206 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Yang Li <LeoLi@freescale.com>
2014-08-06Revert "powerpc: Enable erratum A-008007 workaorund for T1040 Rev1.0"Priyanka Jain
This reverts commit 062853ac8f4b6fb5fee1770b67d4684023929e10. New PBI-based workaround which resets PVR register for erratum A-008007 is implemented in RCW. So no workaround implementation is required in Linux Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com> Change-Id: I6d952796efda066fd648179dd9508a0f8c4c2ba2 Reviewed-on: http://git.am.freescale.net:8181/15311 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Poonam Aggrwal <poonam.aggrwal@freescale.com> Tested-by: Richard Schmitt <richard.schmitt@freescale.com> Reviewed-by: Richard Schmitt <richard.schmitt@freescale.com>
2014-05-19powerpc: Enable erratum A-008007 workaorund for T1040 Rev1.0Priyanka Jain
Erratum A-008007 states that PVR register value is unreliable for e5500 cores (Major revision 1.0, Minor revision 2.0) which are present in T1040 Rev1.0 SoC. This workaround implementation -adds a new config option 'CONFIG_FSL_ERRATUM_A_008007' in t1040 specific defconfig files. This config option is used to make sure that changes does not impact non-T1040 platforms. -replaces mfspr(x) macro defintion to check if above erratum is defined and if x is same as SPRN_PVR, then return static value else call mfspr instruction. -Similarly replaces mfpvr() calls TODO: 1.Use some cleaner approach like reading SVR rgeister or parse device tree to check if T1040 Rev1.0 Si instead of using config option. 2.This patch only replaces current accesses of PVR register but does not restrict any new code which tries to read this. A mechanism needs to be implemented to restrict this. Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com> Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com> Change-Id: Ib5f17dec01ca0d98c5f506b1be23dfe06a541015 Reviewed-on: http://git.am.freescale.net:8181/12350 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
2014-05-14powerpc-preempt-lazy-support.patchThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-05-14irq_work: allow certain work in hard irq contextSebastian Andrzej Siewior
irq_work is processed in softirq context on -RT because we want to avoid long latencies which might arise from processing lots of perf events. The noHZ-full mode requires its callback to be called from real hardirq context (commit 76c24fb ("nohz: New APIs to re-evaluate the tick on full dynticks CPUs")). If it is called from a thread context we might get wrong results for checks like "is_idle_task(current)". This patch introduces a second list (hirq_work_list) which will be used if irq_work_run() has been invoked from hardirq context and process only work items marked with IRQ_WORK_HARD_IRQ. This patch also removes arch_irq_work_raise() from sparc & powerpc like it is already done for x86. Atleast for powerpc it is somehow superfluous because it is called from the timer interrupt which should invoke update_process_times(). Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
2014-05-14softirq-disable-softirq-stacks-for-rt.patchThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-05-14Reset to 3.12.19Scott Wood
2014-05-14Merge remote-tracking branch 'stable/linux-3.12.y' into sdk-v1.6.xScott Wood
Signed-off-by: Scott Wood <scottwood@freescale.com> Conflicts: arch/sparc/Kconfig drivers/tty/tty_buffer.c
2014-05-12booke/watchdog: refine and clean up the codesTang Yuantian
Basically, this patch does the following: 1. Move the codes of parsing boot parameters from setup-common.c to driver. In this way, code reader can know directly that there are boot parameters that can change the timeout. 2. Make boot parameter 'booke_wdt_period' effective. currently, when driver is loaded, default timeout is always being used in stead of booke_wdt_period. 3. Wrap up the watchdog timeout in device struct and clean up unnecessary codes. Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com> Change-Id: I1d605067e39e3805a539f079e86934b38fa7d224 Reviewed-on: http://git.am.freescale.net:8181/12196 Reviewed-by: Yang Li <LeoLi@freescale.com> Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
2014-05-05powerpc/8xx: mfspr SPRN_TBRx in lieu of mftb/mftbu is not supportedLEROY Christophe
commit ae2163be10ac6090e7aeed72591e2d7fabb1cdda upstream. Commit beb2dc0a7a84be003ce54e98b95d65cc66e6e536 breaks the MPC8xx which seems to not support using mfspr SPRN_TBRx instead of mftb/mftbu despite what is written in the reference manual. This patch reverts to the use of mftb/mftbu when CONFIG_8xx is selected. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
2014-05-03powerpc: move epapr paravirt init of power_save to an initcallStuart Yoder
some restructuring of epapr paravirt init resulted in ppc_md.power_save being set, and then overwritten to NULL during machine_init. This patch splits the initialization of ppc_md.power_save out into a postcore init call. Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com> Change-Id: Id054bb9ab6b451d64835988a6b2ebe6cd54f85c3 Reviewed-on: http://git.am.freescale.net:8181/11766 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Scott Wood <scottwood@freescale.com> Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
2014-04-30powerpc/t104x: fix deep sleep resume problem in 32-bit modeChenhui Zhao
Kernel in 32-bit mode can not resume to the command shell after waking from deep sleep. Changes: * change fsl_booke_entry_mapping.S to make it work under deep sleep context * fix bugs in sleep.S Change-Id: Ic5186267ae82d12165029093b49c257bba3a3cc1 Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/11665 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Yang Li <LeoLi@freescale.com> Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
2014-04-30KVM: PPC: Book3E: Handle LRAT error exceptionMihai Caraman
Handle LRAT error exception with support for lrat mapping/invalidation and prepare for emulation. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> (cherry picked and merged from sdk1.5 commit fd2bba8b66657eb452c152d6cf0b1cd4320df204) Change-Id: Ifa9a9ce3a9aacab53f6184b2aff00edde1acf47d Reviewed-on: http://git.am.freescale.net:8181/11560 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Stuart Yoder <stuart.yoder@freescale.com> Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
2014-04-30powerpc/booke64: Add LRAT error exception handlerMihai Caraman
Add LRAT (Logical to Real Address Translation) error exception handler to Book3E 64-bit kernel. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> (cherry picked and merged from sdk1.5 commit 70fdc82f73e5330acd9bb978029004c88a754d4e) Change-Id: I0cb34c4b9ebec350ddf46e94876c099c9a8b2c7c Reviewed-on: http://git.am.freescale.net:8181/11557 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Stuart Yoder <stuart.yoder@freescale.com> Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
2014-04-29fsl/pm: add api to get suspend state which is STANDBY or MEMWang Dongsheng
Add set_pm_suspend_state & pm_suspend_state functions to set/get suspend state. When system going to sleep or deep sleep, devices can get the system suspend state(STANDBY/MEM) through pm_suspend_state function and to handle different situations. Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com> Change-Id: Ibd369079f6f0777854d88d7e1af21f455eaf909e Reviewed-on: http://git.am.freescale.net:8181/11530 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Yang Li <LeoLi@freescale.com> Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
2014-04-18Merge branch 'master-tmp' into sdk-v1.6.xScott Wood
master-tmp is the master branch as of 8b60f5ea90c49344692a70f62cd4aa349de38b48 with the following commits reverted due to excessive conflicts: commit b35a69559c46e066e6f24bb02d5a6090483786e3 Author: Scott Wood <scottwood@freescale.com> Date: Fri Apr 18 15:27:52 2014 -0500 Revert "net: add sysfs helpers for netdev_adjacent logic" This reverts commit 0be682ca768d671c91cfd1379759efcb3b29102a. commit 1c0dc06e47e11bf758f3e84ea90c2178a31dbf0f Author: Scott Wood <scottwood@freescale.com> Date: Fri Apr 18 15:27:47 2014 -0500 Revert "net: rename sysfs symlinks on device name change" This reverts commit 45ce45c69750b93b8262aa66792185bd49150293. Conflicts: drivers/iommu/fsl_pamu.c drivers/net/bonding/bond_3ad.c drivers/net/bonding/bond_sysfs.c drivers/net/bonding/bonding.h drivers/net/ethernet/freescale/gianfar.c Signed-off-by: Scott Wood <scottwood@freescale.com> Conflicts: drivers/iommu/fsl_pamu.c drivers/net/bonding/bond_3ad.c drivers/net/bonding/bond_sysfs.c drivers/net/bonding/bonding.h drivers/net/ethernet/freescale/gianfar.c
2014-04-18powerpc/kvm/booke: Fix build break due to stack frame size warningMihai Caraman
Commit ce11e48b7fdd256ec68b932a89b397a790566031 ("KVM: PPC: E500: Add userspace debug stub support") added "struct thread_struct" to the stack of kvmppc_vcpu_run(). thread_struct is 1152 bytes on my build, compared to 48 bytes for the recently-introduced "struct debug_reg". Use the latter instead. This fixes the following error: cc1: warnings being treated as errors arch/powerpc/kvm/booke.c: In function 'kvmppc_vcpu_run': arch/powerpc/kvm/booke.c:760:1: error: the frame size of 1424 bytes is larger than 1024 bytes make[2]: *** [arch/powerpc/kvm/booke.o] Error 1 make[1]: *** [arch/powerpc/kvm] Error 2 make[1]: *** Waiting for unfinished jobs.... Signed-off-by: Scott Wood <scottwood@freescale.com> (cherry picked and merged from upstream commit f5f972102d5c12729f0a35fce266b580aaa03f66) Change-Id: Iaa6996949b07b5f38e9c443071fcb38d71f05a94 Reviewed-on: http://git.am.freescale.net:8181/11191 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
2014-04-10Merge branch 'sdk-kernel-3.12' into sdk-v1.6.xScott Wood
2014-04-10powerpc: Don't corrupt user registers on 32-bitPaul Mackerras
Commit de79f7b9f6 ("powerpc: Put FP/VSX and VR state into structures") modified load_up_fpu() and load_up_altivec() in such a way that they now use r7 and r8. Unfortunately, the callers of these functions on 32-bit machines then return to userspace via fast_exception_return, which doesn't restore all of the volatile GPRs, but only r1, r3 -- r6 and r9 -- r12. This was causing userspace segfaults and other userspace misbehaviour on 32-bit machines. This fixes the problem by changing the register usage of load_up_fpu() and load_up_altivec() to avoid using r7 and r8 and instead use r6 and r10. This also adds comments to those functions saying which registers may be used. Signed-off-by: Paul Mackerras <paulus@samba.org> Tested-by: Scott Wood <scottwood@freescale.com> (on e500mc, so no altivec) Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> (cherry picked from commit 955c1cab809edfb5429603c68493363074ac20cf)
2014-04-10powerpc: Provide for giveup_fpu/altivec to save state in alternate locationPaul Mackerras
This provides a facility which is intended for use by KVM, where the contents of the FP/VSX and VMX (Altivec) registers can be saved away to somewhere other than the thread_struct when kernel code wants to use floating point or VMX instructions. This is done by providing a pointer in the thread_struct to indicate where the state should be saved to. The giveup_fpu() and giveup_altivec() functions test these pointers and save state to the indicated location if they are non-NULL. Note that the MSR_FP/VEC bits in task->thread.regs->msr are still used to indicate whether the CPU register state is live, even when an alternate save location is being used. This also provides load_fp_state() and load_vr_state() functions, which load up FP/VSX and VMX state from memory into the CPU registers, and corresponding store_fp_state() and store_vr_state() functions, which store FP/VSX and VMX state into memory from the CPU registers. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> (cherry picked from commit 18461960cbf50bf345ef0667d45d5f64de8fb893)
2014-04-10powerpc: Put FP/VSX and VR state into structuresPaul Mackerras
This creates new 'thread_fp_state' and 'thread_vr_state' structures to store FP/VSX state (including FPSCR) and Altivec/VSX state (including VSCR), and uses them in the thread_struct. In the thread_fp_state, the FPRs and VSRs are represented as u64 rather than double, since we rarely perform floating-point computations on the values, and this will enable the structures to be used in KVM code as well. Similarly FPSCR is now a u64 rather than a structure of two 32-bit values. This takes the offsets out of the macros such as SAVE_32FPRS, REST_32FPRS, etc. This enables the same macros to be used for normal and transactional state, enabling us to delete the transactional versions of the macros. This also removes the unused do_load_up_fpu and do_load_up_altivec, which were in fact buggy since they didn't create large enough stack frames to account for the fact that load_up_fpu and load_up_altivec are not designed to be called from C and assume that their caller's stack frame is an interrupt frame. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> (cherry picked from commit de79f7b9f6f92ec1bd6f61fa1f20de60728a5b5e) Signed-off-by: Scott Wood <scottwood@freescale.com> Conflicts: arch/powerpc/include/asm/processor.h
2014-04-10Merge branch 'rtmerge' into sdk-v1.6.xScott Wood
This merges 3.12.15-rt25. Signed-off-by: Scott Wood <scottwood@freescale.com> Conflicts: drivers/misc/Makefile drivers/net/ethernet/freescale/gianfar.c drivers/net/ethernet/freescale/gianfar_ethtool.c drivers/net/ethernet/freescale/gianfar_sysfs.c
2014-04-10powerpc-preempt-lazy-support.patchThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-04-10irq_work: allow certain work in hard irq contextSebastian Andrzej Siewior
irq_work is processed in softirq context on -RT because we want to avoid long latencies which might arise from processing lots of perf events. The noHZ-full mode requires its callback to be called from real hardirq context (commit 76c24fb ("nohz: New APIs to re-evaluate the tick on full dynticks CPUs")). If it is called from a thread context we might get wrong results for checks like "is_idle_task(current)". This patch introduces a second list (hirq_work_list) which will be used if irq_work_run() has been invoked from hardirq context and process only work items marked with IRQ_WORK_HARD_IRQ. This patch also removes arch_irq_work_raise() from sparc & powerpc like it is already done for x86. Atleast for powerpc it is somehow superfluous because it is called from the timer interrupt which should invoke update_process_times(). Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
2014-04-10softirq-disable-softirq-stacks-for-rt.patchThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2014-04-08Merge remote-tracking branch 'stable/linux-3.12.y' into sdk-v1.6.xScott Wood
Signed-off-by: Scott Wood <scottwood@freescale.com> Conflicts: drivers/mmc/card/block.c
2014-04-08Merge branch 'merge' into sdk-v1.6.xScott Wood
This reverts v3.13-rc3+ (78fd82238d0e5716) to v3.12, except for commits which I noticed which appear relevant to the SDK. Signed-off-by: Scott Wood <scottwood@freescale.com> Conflicts: arch/powerpc/include/asm/kvm_host.h arch/powerpc/kvm/book3s_hv_rmhandlers.S arch/powerpc/kvm/book3s_interrupts.S arch/powerpc/kvm/e500.c arch/powerpc/kvm/e500mc.c arch/powerpc/sysdev/fsl_soc.h drivers/Kconfig drivers/cpufreq/ppc-corenet-cpufreq.c drivers/dma/fsldma.c drivers/dma/s3c24xx-dma.c drivers/misc/Makefile drivers/mmc/host/sdhci-of-esdhc.c drivers/mtd/devices/m25p80.c drivers/net/ethernet/freescale/gianfar.h drivers/platform/Kconfig drivers/platform/Makefile drivers/spi/spi-fsl-espi.c include/crypto/algapi.h include/linux/netdev_features.h include/linux/skbuff.h include/net/ip.h net/core/ethtool.c
2014-04-08powerpc/booke: clear DBCR0_BT in user_disable_single_step()James Yang
BookE version of user_disable_single_step() clears DBCR0_IC for the instruction completion debug, but did not also clear DBCR0_BT for the branch taken exception. This behavior was lost by the 2/2010 patch. Signed-off-by: James Yang <James.Yang@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com> (cherry picked from commit 682775b8de995d97956447730c04d2ff978d4e13)
2014-04-08powerpc: export debug registers save function for KVMBharat Bhushan
KVM need this function when switching from vcpu to user-space thread. My subsequent patch will use this function. Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Alexander Graf <agraf@suse.de> (cherry picked from commit fc82cf113bded906e0fc1d4a8636a6776670b1c5)
2014-04-08powerpc: move debug registers in a structureBharat Bhushan
This way we can use same data type struct with KVM and also help in using other debug related function. Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de> (cherry picked from commit 95791988fec645d196e746fcc0e329e19f7b1347) Signed-off-by: Scott Wood <scottwood@freescale.com> Conflicts: arch/powerpc/include/asm/processor.h
2014-04-08powerpc: remove unnecessary line continuationsBharat Bhushan
Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de> (cherry picked from commit 6b3e3b310a884958df030760e725d32a79c0c8b4)
2014-04-08powerpc/booke64: Check napping in performance monitor interruptKevin Hao
The performance monitor interrupt is asynchronous, so we should check if the current processor is in napping status in the handler of this interrupt. Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> (cherry picked from commit e48673360b8b113ca83dc3a45e02ad37fdf9f2d0)
2014-04-08powerpc/fsl-booke: Use common defines for SPE/FP interrupts numbersMihai Caraman
On Book3E some SPE/FP/AltiVec interrupts share the same number. Use common defines to indentify these numbers. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> [scottwood@freescale.com: fixed space-before-tab] Signed-off-by: Scott Wood <scottwood@freescale.com> (cherry picked from commit c58ce397a62ec14b7b06c407a4173ed667e20d5f)
2014-04-08powerpc/booke64: Use common defines for AltiVec interrupts numbersMihai Caraman
On Book3E some SPE/FP/AltiVec interrupts share the same number. Use common defines to indentify these numbers. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com> (cherry picked from commit 6b310fc58db27318309a04621d3a4509f1c7845a)
2014-04-07powerpc: Fix PPC_EMULATED_STATS build break with sync patchScott Wood
Commit 9863c28a2af90a56c088f5f6288d7f6d2c923c14 ("powerpc: Emulate sync instruction variants") introduced a build breakage with CONFIG_PPC_EMULATED_STATS enabled. Signed-off-by: Scott Wood <scottwood@freescale.com> Cc: Kumar Gala <galak@kernel.org> Cc: James Yang <James.Yang@freescale.com> --- (cherry picked from commit a3821b2af185b64e3382c45fbdaa2cbc91ce14b8)
2014-04-07powerpc: Emulate sync instruction variantsJames Yang
Reserved fields of the sync instruction have been used for other instructions (e.g. lwsync). On processors that do not support variants of the sync instruction, emulate it by executing a sync to subsume the effect of the intended instruction. Signed-off-by: James Yang <James.Yang@freescale.com> [scottwood@freescale.com: whitespace and subject line fix] Signed-off-by: Scott Wood <scottwood@freescale.com> (cherry picked from commit 9863c28a2af90a56c088f5f6288d7f6d2c923c14)
2014-04-07Rewind v3.13-rc3+ (78fd82238d0e5716) to v3.12Scott Wood
2014-04-04powerpc/cache: add cache flush operation for various e500Chenhui Zhao
Various e500 core have different cache architecture, so they need different cache flush operations. Therefore, add a callback function cpu_flush_caches to the struct cpu_spec. The cache flush operation for the specific kind of e500 is selected at init time. The callback function will flush all caches in the current cpu. Change-Id: Id6da30ac5490cac5f5669909df2152f0ee952086 Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/10705 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Yang Li <LeoLi@freescale.com> Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
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