Re: [PATCH 1/3] powerpc/mm/radix: Update LPCR only if it is powernv

On 31/05/16 16:26, Aneesh Kumar K.V wrote: > LPCR cannot be updated when running in guest mode. > > Signed-off-by: Aneesh Kumar K.V > --- > arch/powerpc/mm/pgtable-radix.c | 23 ++- > 1 file changed, 10 insertions(+), 13 deletions(-) > >

Re: [PATCH] powerpc/mm: use _raw variant of page table accessors

On 31/05/16 20:59, Aneesh Kumar K.V wrote: > This switch few of the page table accessor to use the __raw variant > and does the cpu to big endian conversion of constants. This helps in > generating better code. > > For ex: a pgd_none(pgd) check with and without fix is listed below > > Without

[PATCH V3 7/8] cpufreq: Return index from cpufreq_frequency_table_target()

This routine can't fail unless the frequency table is invalid and doesn't contain any valid entries. Make it return the index and WARN() in case it is used for an invalid table. Signed-off-by: Viresh Kumar --- Documentation/cpu-freq/cpu-drivers.txt | 7 +++

[PATCH V3 5/8] cpufreq: Drop freq-table param to cpufreq_frequency_table_target()

The policy already has this pointer set, use it instead. Signed-off-by: Viresh Kumar --- Documentation/cpu-freq/cpu-drivers.txt | 1 - drivers/cpufreq/amd_freq_sensitivity.c | 3 +-- drivers/cpufreq/cpufreq.c | 4 ++-- drivers/cpufreq/cpufreq_ondemand.c

Re: [PATCH] powerpc/mm/radix: Make the pid unsigned long

On 02/06/16 19:44, Aneesh Kumar K.V wrote: > Semantic Issue: comparison of constant 18446744073709551615 with > expression of type 'unsigned int' is always false. > > Signed-off-by: Aneesh Kumar K.V > --- > arch/powerpc/mm/tlb-radix.c | 8 > 1 file

Re: [PATCH v5 1/6] qspinlock: powerpc support qspinlock

On Fri, 2016-06-03 at 12:10 +0800, xinhui wrote: > On 2016年06月03日 09:32, Benjamin Herrenschmidt wrote: > > On Fri, 2016-06-03 at 11:32 +1000, Benjamin Herrenschmidt wrote: > >> On Thu, 2016-06-02 at 17:22 +0800, Pan Xinhui wrote: > >>> > >>> Base code to enable qspinlock on powerpc. this patch add

Re: [PATCH v5 1/6] qspinlock: powerpc support qspinlock

On 2016年06月03日 09:32, Benjamin Herrenschmidt wrote: On Fri, 2016-06-03 at 11:32 +1000, Benjamin Herrenschmidt wrote: On Thu, 2016-06-02 at 17:22 +0800, Pan Xinhui wrote: Base code to enable qspinlock on powerpc. this patch add some #ifdef here and there. Although there is no paravirt related

[PATCH v2] powerpc: spinlock: Fix spin_unlock_wait()

There is an ordering issue with spin_unlock_wait() on powerpc, because the spin_lock primitive is an ACQUIRE and an ACQUIRE is only ordering the load part of the operation with memory operations following it. Therefore the following event sequence can happen: CPU 1 CPU 2

Re: [PATCH 3/3] powerpc/mm/radix: Flush page walk cache when freeing page table

Benjamin Herrenschmidt writes: > On Thu, 2016-06-02 at 15:16 +0530, Aneesh Kumar K.V wrote: >> >> >> +/* >> + * flush the page walk cache for the address >> + */ >> +void flush_tlb_pgtable(struct mmu_gather *tlb, unsigned long address) >> +{ >> +   struct

Re: [RESEND PATCH v2 0/6] vfio-pci: Add support for mmapping MSI-X table

Hi, Alex On 2016/6/2 21:11, Alex Williamson wrote: AFAICT, you posted this *3* days ago, has something changed here or is this just expedited nagging for review? This also depends on a non-upstream series and crosses multiple functional areas, all of which make it difficult for maintainers to

Re: [PATCH 1/2] powerpc/timer - large decrementer support

On 01/06/16 15:28, Michael Neuling wrote: > On Tue, 2016-05-31 at 17:16 +1000, Oliver O'Halloran wrote: >> POWER ISA v3 adds large decrementer (LD) mode of operation which >> increases >> the size of the decrementer register from 32 bits to an implementation >> defined with of up to 64 bits. >>

Re: [PATCH 3/3] powerpc/mm/radix: Flush page walk cache when freeing page table

On Thu, 2016-06-02 at 15:16 +0530, Aneesh Kumar K.V wrote: > > > +/* > + * flush the page walk cache for the address > + */ > +void flush_tlb_pgtable(struct mmu_gather *tlb, unsigned long address) > +{ > +   struct mm_struct *mm = tlb->mm; > +   /* > +    * flush the page table walk

Re: [PATCH] powerpc/mm/radix: Update LPCR HR bit as per ISA

On Thu, 2016-06-02 at 15:10 +0530, Aneesh Kumar K.V wrote: > We need to se HR bit LPCR for radix partitions. Again (:-) please a better changeset description. In fact this one is actually incorrect, this is not a partition. Something like "The processor requires the MMU mode (radix vs.

Re: [PATCH V10 00/28] Add new powerpc specific ELF core notes

On 1 June 2016 at 18:26, Anshuman Khandual wrote: > On 05/31/2016 04:42 AM, Michael Ellerman wrote: > > Hi Laurent, > > > > Sorry no. My next branch closed for 4.7 about 3 weeks ago. > > > > This series has been blocked for a long time on the gdb support, but > that

Re: [PATCH 2/2] KVM: PPC: hypervisor large decrementer support

On Wed, 2016-06-01 at 16:23 +1000, Michael Neuling wrote: > FWIW you can use: >         andis. reg,reg,(LPCR_LD)@ha @h in that case. Probably the same result but technically @ha is for arithmetic operations. Cheers, Ben. ___ Linuxppc-dev mailing list

[RFC v3 45/45] dma-mapping: Document the DMA attributes right in declaration

Copy documentation abstract about each DMA attribute from Documentation/DMA-attributes.txt to the place with declaration. Suggested-by: Christoph Hellwig Signed-off-by: Krzysztof Kozlowski --- include/linux/dma-mapping.h | 33

[RFC v3 44/45] dma-mapping: Remove dma_get_attr

After switching DMA attributes to unsigned long it is easier to just compare the bits. Signed-off-by: Krzysztof Kozlowski --- Documentation/DMA-API.txt | 4 +-- arch/arc/mm/dma.c | 4 +-- arch/arm/mm/dma-mapping.c

[RFC v3 43/45] xtensa: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/xtensa/kernel/pci-dma.c | 12 ++-- 1 file changed, 6 insertions(+), 6 deletions(-) diff --git

[RFC v3 42/45] unicore32: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/unicore32/mm/dma-swiotlb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git

[RFC v3 41/45] tile: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/tile/kernel/pci-dma.c | 28 ++-- 1 file changed, 14 insertions(+), 14 deletions(-) diff --git

[RFC v3 40/45] sparc: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/sparc/kernel/iommu.c | 12 ++-- arch/sparc/kernel/ioport.c| 24

[RFC v3 39/45] sh: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/sh/include/asm/dma-mapping.h | 4 ++-- arch/sh/kernel/dma-nommu.c| 4 ++-- arch/sh/mm/consistent.c | 4 ++-- 3

[RFC v3 38/45] s390: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/s390/include/asm/dma-mapping.h | 1 - arch/s390/pci/pci_dma.c | 23 --- 2 files changed, 12

[RFC v3 37/45] misc: mic: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- drivers/misc/mic/host/mic_boot.c | 20 ++-- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git

[RFC v3 36/45] parisc: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/parisc/kernel/pci-dma.c | 16 drivers/parisc/ccio-dma.c| 16 drivers/parisc/sba_iommu.c |

[RFC v3 35/45] openrisc: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/openrisc/kernel/dma.c | 17 - 1 file changed, 8 insertions(+), 9 deletions(-) diff --git

[RFC v3 34/45] nios2: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/nios2/mm/dma-mapping.c | 12 ++-- 1 file changed, 6 insertions(+), 6 deletions(-) diff --git

[RFC v3 33/45] mn10300: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/mn10300/mm/dma-alloc.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/mn10300/mm/dma-alloc.c

[RFC v3 32/45] mips: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/mips/cavium-octeon/dma-octeon.c | 8 arch/mips/loongson64/common/dma-swiotlb.c | 10 +-

[RFC v3 31/45] microblaze: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/microblaze/include/asm/dma-mapping.h | 1 - arch/microblaze/kernel/dma.c | 12 ++-- 2 files changed, 6

[RFC v3 30/45] metag: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/metag/kernel/dma.c | 14 +++--- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/metag/kernel/dma.c

[RFC v3 29/45] m68k: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/m68k/kernel/dma.c | 12 ++-- 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/m68k/kernel/dma.c

[RFC v3 28/45] ia64: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/ia64/hp/common/sba_iommu.c | 22 +++--- arch/ia64/include/asm/machvec.h | 1 - arch/ia64/kernel/pci-swiotlb.c |

[RFC v3 27/45] hexagon: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/hexagon/include/asm/dma-mapping.h | 1 - arch/hexagon/kernel/dma.c | 8 2 files changed, 4 insertions(+), 5

[RFC v3 26/45] h8300: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/h8300/kernel/dma.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/h8300/kernel/dma.c

[RFC v3 25/45] iommu: intel: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- drivers/iommu/intel-iommu.c | 12 ++-- 1 file changed, 6 insertions(+), 6 deletions(-) diff --git

[RFC v3 24/45] x86: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/x86/include/asm/dma-mapping.h | 5 ++--- arch/x86/include/asm/swiotlb.h | 4 ++--

[RFC v3 23/45] video: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- drivers/video/fbdev/omap2/omapfb/omapfb-main.c | 12 ++-- drivers/video/fbdev/omap2/omapfb/omapfb.h | 3 +-- 2 files

[RFC v3 22/45] powerpc: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/powerpc/include/asm/dma-mapping.h| 7 +++ arch/powerpc/include/asm/iommu.h | 10 +-

[RFC v3 21/45] swiotlb: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- include/linux/swiotlb.h | 10 +- lib/swiotlb.c | 13 +++-- 2 files changed, 12 insertions(+), 11

[RFC v3 20/45] xen: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- drivers/xen/swiotlb-xen.c | 14 +++--- include/xen/swiotlb-xen.h | 12 ++-- 2 files changed, 13 insertions(+), 13

[RFC v3 19/45] [media] dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- drivers/media/platform/sti/bdisp/bdisp-hw.c| 26 +++--- drivers/media/v4l2-core/videobuf2-dma-contig.c | 30

[RFC v3 17/45] infiniband: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- drivers/infiniband/core/umem.c | 7 +++ include/rdma/ib_verbs.h| 8 2 files changed, 7 insertions(+), 8

[RFC v3 16/45] drm/rockship: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 17 +++-- drivers/gpu/drm/rockchip/rockchip_drm_gem.h | 2 +- 2 files

[RFC v3 15/45] drm/nouveau: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c | 13 ++--- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git

[RFC v3 14/45] drm/msm: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- drivers/gpu/drm/msm/msm_drv.c | 13 ++--- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git

[RFC v3 13/45] drm/mediatek: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- drivers/gpu/drm/mediatek/mtk_drm_gem.c | 13 ++--- drivers/gpu/drm/mediatek/mtk_drm_gem.h | 2 +- 2 files changed, 7

[RFC v3 12/45] drm/exynos: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 2 +- drivers/gpu/drm/exynos/exynos_drm_g2d.c | 12 +---

[RFC v3 11/45] frv: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/frv/mb93090-mb00/pci-dma-nommu.c | 8 arch/frv/mb93090-mb00/pci-dma.c | 9 - 2 files changed, 8

[RFC v3 10/45] cris: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/cris/arch-v32/drivers/pci/dma.c | 9 - 1 file changed, 4 insertions(+), 5 deletions(-) diff --git

[RFC v3 09/45] c6x: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/c6x/include/asm/dma-mapping.h | 4 ++-- arch/c6x/kernel/dma.c | 9 - arch/c6x/mm/dma-coherent.c | 4

[RFC v3 08/45] blackfin: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/blackfin/kernel/dma-mapping.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git

[RFC v3 07/45] avr32: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/avr32/mm/dma-coherent.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/avr32/mm/dma-coherent.c

[RFC v3 06/45] arm64: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/arm64/mm/dma-mapping.c | 57 +++-- 1 file changed, 29 insertions(+), 28 deletions(-)

[RFC v3 05/45] ARM: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/arm/common/dmabounce.c | 4 +- arch/arm/include/asm/dma-mapping.h | 13 +++--

[RFC v3 04/45] arc: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/arc/mm/dma.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arc/mm/dma.c b/arch/arc/mm/dma.c

[RFC v3 03/45] alpha: dma-mapping: Use unsigned long for dma_attrs

Split out subsystem specific changes for easier reviews. This will be squashed with main commit. Signed-off-by: Krzysztof Kozlowski --- arch/alpha/include/asm/dma-mapping.h | 2 -- arch/alpha/kernel/pci-noop.c | 2 +- arch/alpha/kernel/pci_iommu.c| 12

[RFC v3 02/45] dma-mapping: Use unsigned long for dma_attrs

The dma-mapping core and the implementations do not change the DMA attributes passed by pointer. Thus the pointer can point to const data. However the attributes do not have to be a bitfield. Instead unsigned long will do fine: 1. This is just simpler. Both in terms of reading the code and

[RFC v3 00/45] dma-mapping: Use unsigned long for dma_attrs

on allyesconfigs: ARM, ARM64, i386, x86_64 and powerpc. Please provide reviewes and tests for other platforms. Rebased on next-20160602. For easier testing the patchset is available here: repo: https://github.com/krzk/linux branch: for-next/dma-attrs-const-v3 I didn't CC all the maintainers

Re: [PATCH v2 2/5] fsl/qe: setup clock source for TDM mode

From: Zhao Qiang Date: Thu, 2 Jun 2016 09:44:58 +0800 > +static int ucc_get_tdm_sync_source(u32 tdm_num, enum qe_clock clock, > +enum comm_dir mode) > +{ > + int source = -EINVAL; > + > + if (mode == COMM_DIR_RX && clock ==

Re: [PATCH] powerpc/mm/hash: Fix the reference bit update when handling hash fault

On Tue, 31 May 2016, Hugh Dickins wrote: > > But all my evidence so far is that it is now right: I'll continue > testing v4.6+fix on a couple of loads until this evening: all is > well so far. And then switch to testing v4.5+fix on those loads > for another day and a half. I'm glad to confirm:

[PATCH V2 6/6] cpufreq: Return index from cpufreq_frequency_table_target()

This routine can't fail unless the frequency table is invalid and doesn't contain any valid entries. Make it return the index and WARN() in case it is used for an invalid table. Signed-off-by: Viresh Kumar --- Documentation/cpu-freq/cpu-drivers.txt | 7 +++

[PATCH V2 4/6] cpufreq: Drop freq-table param to cpufreq_frequency_table_target()

The policy already has this pointer set, use it instead. Signed-off-by: Viresh Kumar --- Documentation/cpu-freq/cpu-drivers.txt | 1 - drivers/cpufreq/amd_freq_sensitivity.c | 3 +-- drivers/cpufreq/cpufreq.c | 4 ++-- drivers/cpufreq/cpufreq_ondemand.c

Re: [RESEND PATCH v2 0/6] vfio-pci: Add support for mmapping MSI-X table

AFAICT, you posted this *3* days ago, has something changed here or is this just expedited nagging for review? This also depends on a non-upstream series and crosses multiple functional areas, all of which make it difficult for maintainers to actually do anything with this series. Thanks, Alex

[PATCH v5 11/11] powerpc/powernv: Use deepest stop state when cpu is offlined

If hardware supports stop state, use the deepest stop state when the cpu is offlined. Reviewed-by: Gautham R. Shenoy Signed-off-by: Shreyas B. Prabhu --- - No changes since v1 arch/powerpc/platforms/powernv/idle.c| 15 +--

[PATCH v5 10/11] cpuidle/powernv: Add support for POWER ISA v3 idle states

POWER ISA v3 defines a new idle processor core mechanism. In summary, a) new instruction named stop is added. b) new per thread SPR named PSSCR is added which controls the behavior of stop instruction. Supported idle states and value to be written to PSSCR register to enter any idle

[PATCH v5 09/11] cpuidle/powernv: Use CPUIDLE_STATE_MAX instead of MAX_POWERNV_IDLE_STATES

Use cpuidle's CPUIDLE_STATE_MAX macro instead of powernv specific MAX_POWERNV_IDLE_STATES. Cc: Rafael J. Wysocki Cc: Daniel Lezcano Cc: linux...@vger.kernel.org Suggested-by: Daniel Lezcano Signed-off-by: Shreyas

[PATCH v5 08/11] powerpc/powernv: Add platform support for stop instruction

POWER ISA v3 defines a new idle processor core mechanism. In summary, a) new instruction named stop is added. This instruction replaces instructions like nap, sleep, rvwinkle. b) new per thread SPR named Processor Stop Status and Control Register (PSSCR) is added which controls

[PATCH v5 07/11] powerpc/powernv: set power_save func after the idle states are initialized

pnv_init_idle_states discovers supported idle states from the device tree and does the required initialization. Set power_save function pointer only after this initialization is done Reviewed-by: Gautham R. Shenoy Signed-off-by: Shreyas B. Prabhu

[PATCH v5 06/11] powerpc/powernv: abstraction for saving SPRs before entering deep idle states

Create a function for saving SPRs before entering deep idle states. This function can be reused for POWER9 deep idle states. Reviewed-by: Gautham R. Shenoy Signed-off-by: Shreyas B. Prabhu --- - No changes from v3 Changes in v3:

[PATCH v5 05/11] powerpc/powernv: Make pnv_powersave_common more generic

pnv_powersave_common does common steps needed before entering idle state and eventually changes MSR to MSR_IDLE and does rfid to pnv_enter_arch207_idle_mode. Move the updation of HSTATE_HWTHREAD_STATE to pnv_powersave_common from pnv_enter_arch207_idle_mode and make it more generic by passing the

[PATCH v5 04/11] powerpc/powernv: Rename reusable idle functions to hardware agnostic names

Functions like power7_wakeup_loss, power7_wakeup_noloss, power7_wakeup_tb_loss are used by POWER7 and POWER8 hardware. They can also be used by POWER9. Hence rename these functions hardware agnostic names. Suggested-by: Gautham R. Shenoy Signed-off-by: Shreyas B. Prabhu

[PATCH v5 03/11] powerpc/powernv: Rename idle_power7.S to idle_power_common.S

idle_power7.S handles idle entry/exit for POWER7, POWER8 and in next patch for POWER9. Rename the file to a non-hardware specific name. Reviewed-by: Gautham R. Shenoy Signed-off-by: Shreyas B. Prabhu --- - No changes from v3 Changes in v3:

[PATCH v5 02/11] powerpc/kvm: make hypervisor state restore a function

In the current code, when the thread wakes up in reset vector, some of the state restore code and check for whether a thread needs to branch to kvm is duplicated. Reorder the code such that this duplication is avoided. At a higher level this is what the change looks like- Before this patch -

[PATCH v5 01/11] powerpc/powernv: Use PNV_THREAD_WINKLE macro while requesting for winkle

Signed-off-by: Shreyas B. Prabhu --- -No changes in v5 Changes in v4 = - New in v4 arch/powerpc/kernel/idle_power7.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/idle_power7.S

[PATCH v5 00/11] powerpc/powernv/cpuidle: Add support for POWER ISA v3 idle states

POWER ISA v3 defines a new idle processor core mechanism. In summary, a) new instruction named stop is added. This instruction replaces instructions like nap, sleep, rvwinkle. b) new per thread SPR named PSSCR is added which controls the behavior of stop instruction.

Re: [PATCH 3/8] cpufreq: powerenv: Fix memory leak

On Thu, 2016-06-02 at 17:13 +0530, Viresh Kumar wrote: > On 02-06-16, 21:37, Michael Ellerman wrote: > > On Thu, 2016-06-02 at 16:52 +0530, Viresh Kumar wrote: > > > On 02-06-16, 21:08, Michael Ellerman wrote: > > > > On Wed, 2016-06-01 at 16:04 +0530, Viresh Kumar wrote: > > > > > > > > > The

Re: [PATCH] selftests/powerpc: Import Anton's mmap & futex micro benchmarks

On Thu, 2016-06-02 at 22:02 +1000, Michael Ellerman wrote: > + > +int test_futex(void) > +{ > + struct timespec ts_start, ts_end; > +unsigned long i = ITERATIONS; > + > + clock_gettime(CLOCK_MONOTONIC, _start); > + > +while (i--) { > +unsigned int addr = 0;

[PATCH] selftests/powerpc: Import Anton's mmap & futex micro benchmarks

These are useful little loops for smoke testing performance. Signed-off-by: Michael Ellerman --- .../selftests/powerpc/benchmarks/.gitignore| 2 ++ .../testing/selftests/powerpc/benchmarks/Makefile | 2 +- .../selftests/powerpc/benchmarks/futex_bench.c | 42

[PATCH v2] powerpc: export cpu_to_core_id()

Export cpu_to_core_id(). This will be used by the lpfc driver. This enables topology_core_id() from (defined to cpu_to_core_id() in arch/powerpc/include/asm/topology.h) to be used by (non-builtin) modules. That is arch-neutral, already used by eg, drivers/base/topology.c, but it is builtin

Re: [PATCH 4/4] Revert "powerpc/fsl: Move fsl_guts.h out of arch/powerpc"

On Wednesday, June 1, 2016 8:24:20 PM CEST Scott Wood wrote: > On Mon, 2016-05-30 at 15:18 +0200, Arnd Bergmann wrote: > > All users of this driver are PowerPC specific and the header file > > has no business in the global include/linux/ hierarchy, so move > > it back before anyone starts using it

Re: [PATCH 3/8] cpufreq: powerenv: Fix memory leak

On 02-06-16, 21:37, Michael Ellerman wrote: > On Thu, 2016-06-02 at 16:52 +0530, Viresh Kumar wrote: > > On 02-06-16, 21:08, Michael Ellerman wrote: > > > On Wed, 2016-06-01 at 16:04 +0530, Viresh Kumar wrote: > > > > > > > The policy is copied (unnecessarily) and is never freed. Fix it by just >

Re: [PATCH 3/8] cpufreq: powerenv: Fix memory leak

On Thu, 2016-06-02 at 16:52 +0530, Viresh Kumar wrote: > On 02-06-16, 21:08, Michael Ellerman wrote: > > On Wed, 2016-06-01 at 16:04 +0530, Viresh Kumar wrote: > > > > > The policy is copied (unnecessarily) and is never freed. Fix it by just > > > getting a reference to the existing policy

Re: [PATCH 1/3] powerpc: export cpu_to_core_id()

On 06/02/2016 08:03 AM, Michael Ellerman wrote: Can you send me a v2 with a change log that includes all that detail. Sure; should have done it. Thanks. -- Mauricio Faria de Oliveira IBM Linux Technology Center ___ Linuxppc-dev mailing list

Re: [PATCH 3/8] cpufreq: powerenv: Fix memory leak

On 02-06-16, 21:08, Michael Ellerman wrote: > On Wed, 2016-06-01 at 16:04 +0530, Viresh Kumar wrote: > > > The policy is copied (unnecessarily) and is never freed. Fix it by just > > getting a reference to the existing policy structure and putting it > > back. > > > > Signed-off-by: Viresh Kumar

Re: [PATCH v5 0/6] powerPC/pSeries use pv-qpsinlock as the default spinlock implemention

On Thu, Jun 02, 2016 at 05:47:47PM +0800, xinhui wrote: > > > On 2016年06月02日 17:33, Peter Zijlstra wrote: > > > > > >I'm thinking one copy a day is quite enough... > > > sorry for noise. > In recent days, our smtp server has some bugs that mails' Message-Id is > changed by accident. > So I

Re: [PATCH 3/8] cpufreq: powerenv: Fix memory leak

On Wed, 2016-06-01 at 16:04 +0530, Viresh Kumar wrote: > The policy is copied (unnecessarily) and is never freed. Fix it by just > getting a reference to the existing policy structure and putting it > back. > > Signed-off-by: Viresh Kumar When was it broken, always?

Re: [PATCH 1/3] powerpc: export cpu_to_core_id()

On Thu, 2016-06-02 at 06:00 -0300, Mauricio Faria de Oliveira wrote: > Hi Michael, > On 06/02/2016 04:41 AM, Michael Ellerman wrote: > > On Wed, 2016-06-01 at 17:16 -0300, Mauricio Faria de Oliveira wrote: > > > Export cpu_to_core_id(). This will be used by the lpfc driver. > > > > Can you

Re: [PATCH v5 0/6] powerPC/pSeries use pv-qpsinlock as the default spinlock implemention

I'm thinking one copy a day is quite enough... ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev

[PATCH v5 6/6] powerpc: pseries: Add pv-qspinlock build config/make

pseries has PowerVM support, the default option is Y. Signed-off-by: Pan Xinhui --- arch/powerpc/kernel/Makefile | 1 + arch/powerpc/platforms/pseries/Kconfig | 8 2 files changed, 9 insertions(+) diff --git a/arch/powerpc/kernel/Makefile

[PATCH v5 3/6] powerpc: lib/locks.c: Add cpu yield/wake helper function

pv-qspinlock core has pv_wait/pv_kick which will give a better performace by yielding and kicking cpu at some cases. lets support them by adding two corresponding helper functions. Signed-off-by: Pan Xinhui --- arch/powerpc/include/asm/spinlock.h | 4

[PATCH v5 1/6] qspinlock: powerpc support qspinlock

Base code to enable qspinlock on powerpc. this patch add some #ifdef here and there. Although there is no paravirt related code, we can successfully build a qspinlock kernel after apply this patch. Signed-off-by: Pan Xinhui --- arch/powerpc/include/asm/qspinlock.h

[PATCH v5 4/6] pv-qspinlock: powerpc support pv-qspinlock

As we need let pv-qspinlock-kernel run on all environment which might have no powervm, we should runtime choose which qspinlock version to use. The default pv-qspinlock use native version. pv_lock initialization should be done in bootstage with irq disabled. And if there is PHYP, restore

[PATCH v5 5/6] pv-qspinlock: use cmpxchg_release in __pv_queued_spin_unlock

cmpxchg_release is light-wight than cmpxchg, On some arch like ppc, barrier impact the performace too much. Suggested-by: Boqun Feng Signed-off-by: Pan Xinhui --- kernel/locking/qspinlock_paravirt.h | 2 +- 1 file changed, 1 insertion(+), 1

[PATCH v5 2/6] powerpc: pseries/Kconfig: Add qspinlock build config

pseries will use qspinlock by default. Signed-off-by: Pan Xinhui --- arch/powerpc/platforms/pseries/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index bec90fb..f669323

[PATCH v5 0/6] powerPC/pSeries use pv-qpsinlock as the default spinlock implemention

change from v4: BUG FIX. thanks boqun reporting this issue. struct __qspinlock has different layout in bigendian mahcine. native_queued_spin_unlock() may write value to a wrong address. now fix it. sorry for not even doing a test on bigendian machine before!!!

[PATCH v5 0/6] powerPC/pSeries use pv-qpsinlock as the default spinlock implemention

change from v4: BUG FIX. thanks boqun reporting this issue. struct __qspinlock has different layout in bigendian mahcine. native_queued_spin_unlock() may write value to a wrong address. now fix it. sorry for not even doing a test on bigendian machine before!!!

[PATCH 2/3] powerpc/mm/radix: Update to tlb functions ric argument

Radix invalidate control (RIC) is used to control which cache to flush using tlb instructions. When doing a PID flush, we currently flush everything including page walk cache. For address range flush, we flush only the TLB. In the later patch, we add support for flushing only page walk cache.

[PATCH 3/3] powerpc/mm/radix: Flush page walk cache when freeing page table

Even though a tlb_flush() does a flush with invalidate all cache, we can end up doing an RCU page table free, before calling tlb_flush(). That means we can have page walk cache entries even after we free the page table pages. This can result in us doing wrong page table walk. Avoid this by doing

[PATCH 1/3] Fix .long's in mm/tlb-radix.c to more meaningful

From: Balbir Singh The .longs with the shifts are harder to read, use more meaningful names for the opcodes. PPC_TLBIE_5 is introduced for the 5 opcode variation of the instruction due to an existing op-code for the 2 opcode variant Signed-off-by: Balbir Singh

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