RE: [PATCH] cpufreq: qoriq: Make the driver usable on all QorIQ platforms

2014-10-20 Thread Yuantian Tang
Thanks for your comments. Your comments will be addressed in next version. Some explanations inline. Thanks, Yuantian -Original Message- From: Viresh Kumar [mailto:viresh.ku...@linaro.org] Sent: Friday, October 17, 2014 4:09 PM To: Tang Yuantian-B29983 Cc: Rafael J. Wysocki; Linux

re: [POWERPC] 4xx: EP405 boards support for arch/powerpc

2014-10-20 Thread Dan Carpenter
Hello Benjamin Herrenschmidt, The patch 619740384ceb: [POWERPC] 4xx: EP405 boards support for arch/powerpc from Dec 21, 2007, leads to the following static checker warning: arch/powerpc/boot/4xx.c:567 ibm405gp_fixup_clocks() warn: shifting and masking to zero

[git pull] Please pull mpe.git for-linus branch (for powerpc)

2014-10-20 Thread Michael Ellerman
Hi Linus, Here's some more updates for powerpc for 3.18. They are a bit late I know, though must are actually bug fixes. In my defence I nearly cut the top of my finger off last weekend in a gruesome bike maintenance accident, so I spent a good part of the week waiting around for doctors. True

[PATCH] arch/powerpc: Fix build error with hugetlfs disabled

2014-10-20 Thread Aneesh Kumar K.V
arch/powerpc/mm/slice.c:704:5: error: expected identifier or ‘(’ before numeric constant int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, ^ make[1]: *** [arch/powerpc/mm/slice.o] Error 1 make: *** [arch/powerpc/mm/slice.o] Error 2 This got introduced via

[PATCH] KVM: PPC: Book3S HV: Add missing HPTE unlock

2014-10-20 Thread Aneesh Kumar K.V
In kvm_test_clear_dirty_npages(), if we find an invalid HPTE we move on to the next HPTE without unlocking the invalid one. In fact we should never find an invalid and unlocked HPTE in the rmap chain, but for robustness we should unlock it. This adds the missing unlock. Reported-by: Benjamin

[PATCH v17 4/7] powerpc: add pmd_[dirty|mkclean] for THP

2014-10-20 Thread Minchan Kim
MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite of the contents since MADV_FREE syscall is called for THP page. This patch adds pmd_dirty and pmd_mkclean for THP page MADV_FREE support. Cc: Benjamin Herrenschmidt b...@kernel.crashing.org Cc: Paul Mackerras

Re: [POWERPC] 4xx: EP405 boards support for arch/powerpc

2014-10-20 Thread Benjamin Herrenschmidt
On Mon, 2014-10-20 at 12:06 +0300, Dan Carpenter wrote: Hello Benjamin Herrenschmidt, The patch 619740384ceb: [POWERPC] 4xx: EP405 boards support for arch/powerpc from Dec 21, 2007, leads to the following static checker warning: Ah, I even forgot I wrote that ... I'll have to dig out the

[PATCH 2/3] KVM: PPC: BOOK3S: HV: Use unlock variant with memory barrier

2014-10-20 Thread Aneesh Kumar K.V
We switch to unlock variant with memory barriers in the error path and also in code path where we had implicit dependency on previous functions calling lwsync/ptesync. In most of the cases we don't really need an explicit barrier, but using the variant make sure we don't make mistakes later with

[PATCH 3/3] KVM: PPC: BOOK3S: HV: Rename variable for better readability

2014-10-20 Thread Aneesh Kumar K.V
Minor cleanup Signed-off-by: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com --- arch/powerpc/kvm/book3s_hv_rm_mmu.c | 25 + 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c index

[PATCH 1/3] KVM: PPC: BOOK3S: HV: Add helpers for lock/unlock hpte

2014-10-20 Thread Aneesh Kumar K.V
This patch adds helper routine for lock and unlock hpte and use the same for rest of the code. We don't change any locking rules in this patch. In the next patch we switch some of the unlock usage to use the api with barrier and also document the usage without barriers. Signed-off-by: Aneesh

Re: [PATCH v3 04/27] arm/MSI: Save MSI chip in pci_sys_data

2014-10-20 Thread Lorenzo Pieralisi
On Wed, Oct 15, 2014 at 04:06:52AM +0100, Yijing Wang wrote: Saving msi chip in pci_sys_data can make pci bus and devices don't need to know msi chip detail, it also make pci enumeration code be decoupled from msi chip. In fact, all pci devices under the same pci hostbridge share same msi

Re: [POWERPC] 4xx: EP405 boards support for arch/powerpc

2014-10-20 Thread Wolfgang Denk
Dear Ben, In message 1413802359.18300.7.camel@pasglop you wrote: Ah, I even forgot I wrote that ... I'll have to dig out the docs of that chip, maybe later this week. Thanks ! ... 565 cbdv = ((pllmr 0x0006) 17) + 1; /* CPU:PLB */ 566 opdv = ((pllmr

Re: [PATCH v3 04/27] arm/MSI: Save MSI chip in pci_sys_data

2014-10-20 Thread Yijing Wang
On 2014/10/21 1:21, Lorenzo Pieralisi wrote: On Wed, Oct 15, 2014 at 04:06:52AM +0100, Yijing Wang wrote: Saving msi chip in pci_sys_data can make pci bus and devices don't need to know msi chip detail, it also make pci enumeration code be decoupled from msi chip. In fact, all pci devices

[PATCH v2 08/47] kernel: Move pm_power_off to common code

2014-10-20 Thread Guenter Roeck
pm_power_off is defined for all architectures. Move it to common code. Have all architectures call do_kernel_power_off instead of pm_power_off. Some architectures point pm_power_off to machine_power_off. For those, call do_kernel_power_off from machine_power_off instead. Acked-by: David Vrabel

Re: [2/2] powerpc/numa: ensure per-cpu NUMA mappings are correct on topology update

2014-10-20 Thread Michael Ellerman
On Sat, 2014-18-10 at 00:50:40 UTC, Nishanth Aravamudan wrote: We received a report of warning in kernel/sched/core.c where the sched group was NULL on an LPAR after a topology update. This seems to occur because after the topology update has moved the CPUs, cpu_to_node is returning the old

Re: powerpc: Wire up sys_bpf() syscall

2014-10-20 Thread Michael Ellerman
On Fri, 2014-10-10 at 05:53:45 UTC, Pranith Kumar wrote: This patch wires up the new syscall sys_bpf() on powerpc. Is there a test suite we can run to verify it works? cheers ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org

Re: powerpc: Wire up sys_bpf() syscall

2014-10-20 Thread Denis Kirjanov
We have a test suite under samples/bpf/ On 10/21/14, Michael Ellerman m...@ellerman.id.au wrote: On Fri, 2014-10-10 at 05:53:45 UTC, Pranith Kumar wrote: This patch wires up the new syscall sys_bpf() on powerpc. Is there a test suite we can run to verify it works? cheers

Re: powerpc: Wire up sys_bpf() syscall

2014-10-20 Thread Michael Ellerman
On Tue, 2014-10-21 at 08:52 +0400, Denis Kirjanov wrote: We have a test suite under samples/bpf/ Thanks. I looked under tools/testing/selftests, could it move in there? cheers ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org

Re: powerpc: Wire up sys_bpf() syscall

2014-10-20 Thread Denis Kirjanov
I don't see any problems with it On 10/21/14, Michael Ellerman m...@ellerman.id.au wrote: On Tue, 2014-10-21 at 08:52 +0400, Denis Kirjanov wrote: We have a test suite under samples/bpf/ Thanks. I looked under tools/testing/selftests, could it move in there? cheers -- Regards, Denis

Re: powerpc: Wire up sys_bpf() syscall

2014-10-20 Thread Denis Kirjanov
I don't see any problems with it On 10/21/14, Michael Ellerman m...@ellerman.id.au wrote: On Tue, 2014-10-21 at 08:52 +0400, Denis Kirjanov wrote: We have a test suite under samples/bpf/ Thanks. I looked under tools/testing/selftests, could it move in there? cheers -- Regards, Denis

[PATCH] powerpc: Enable NUMA balancing in pseries[_le]_defconfig

2014-10-20 Thread Michael Neuling
This enables NUMA balancing in pseries[_le]_defconfig. NUMA balancing can do some nasty things with the low level mm code and has been causing some issues with the cxl driver. Also distros are enabling it (eg Ubuntu), so it would be good to get some more test coverage with it. Signed-off-by: