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[PATCH 01/11] Add cpufreq CPPC fixes
by Duc Dang 11 Nov '16

11 Nov '16

Integrate 2 upstream fixes to correct the desired performance calculation in cppc_cpufreq driver. Signed-off-by: Duc Dang <dhdang(a)apm.com> --- ...C-Avoid-overflow-when-calculating-desired.patch | 31 +++++++++++++++ ...req-CPPC-Correct-desired_perf-calculation.patch | 46 ++++++++++++++++++++++ SPECS/kernel-aarch64.spec | 13 +++++- 3 files changed, 89 insertions(+), 1 deletion(-) create mode 100644 SOURCES/1001-cpufreq-CPPC-Avoid-overflow-when-calculating-desired.patch create mode 100644 SOURCES/1002-cpufreq-CPPC-Correct-desired_perf-calculation.patch diff --git a/SOURCES/1001-cpufreq-CPPC-Avoid-overflow-when-calculating-desired.patch b/SOURCES/1001-cpufreq-CPPC-Avoid-overflow-when-calculating-desired.patch new file mode 100644 index 0000000..486f175 --- /dev/null +++ b/SOURCES/1001-cpufreq-CPPC-Avoid-overflow-when-calculating-desired.patch @@ -0,0 +1,31 @@ +From 8b5a7d03a65c86a4473bd10b582fc9b6fe434c31 Mon Sep 17 00:00:00 2001 +From: Hoan Tran <hotran(a)apm.com> +Date: Wed, 14 Sep 2016 16:08:28 -0700 +Subject: [PATCH 1001/1018] cpufreq: CPPC: Avoid overflow when calculating + desired_perf + +This patch fixes overflow issue when calculating the desired_perf. + +Fixes: ad38677df44b (cpufreq: CPPC: Force reporting values in KHz to fix user space interface) +Signed-off-by: Hoan Tran <hotran(a)apm.com> +Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> +--- + drivers/cpufreq/cppc_cpufreq.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c +index 6fe8415..61d2ac6 100644 +--- a/drivers/cpufreq/cppc_cpufreq.c ++++ b/drivers/cpufreq/cppc_cpufreq.c +@@ -84,7 +84,7 @@ static int cppc_cpufreq_set_target(struct cpufreq_policy *policy, + + cpu = all_cpu_data[policy->cpu]; + +- cpu->perf_ctrls.desired_perf = target_freq * policy->max / cppc_dmi_max_khz; ++ cpu->perf_ctrls.desired_perf = (u64)target_freq * policy->max / cppc_dmi_max_khz; + freqs.old = policy->cur; + freqs.new = target_freq; + +-- +1.8.3.1 + diff --git a/SOURCES/1002-cpufreq-CPPC-Correct-desired_perf-calculation.patch b/SOURCES/1002-cpufreq-CPPC-Correct-desired_perf-calculation.patch new file mode 100644 index 0000000..ec16cc1 --- /dev/null +++ b/SOURCES/1002-cpufreq-CPPC-Correct-desired_perf-calculation.patch @@ -0,0 +1,46 @@ +From 3ed005a638f6790c6c80fd8ea99b1b054a55a500 Mon Sep 17 00:00:00 2001 +From: Hoan Tran <hotran(a)apm.com> +Date: Thu, 13 Oct 2016 10:33:35 -0700 +Subject: [PATCH 1002/1018] cpufreq: CPPC: Correct desired_perf calculation + +The desired_perf is an abstract performance number. Its value should +be in the range of [lowest perf, highest perf] of CPPC. +The correct calculation is + desired_perf = freq * cppc_highest_perf / cppc_dmi_max_khz + +And cppc_cpufreq_set_target() returns if desired_perf is exactly +the same with the old perf. + +Signed-off-by: Hoan Tran <hotran(a)apm.com> +Reviewed-by: Prashanth Prakash <pprakash(a)codeaurora.org> +Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> +--- + drivers/cpufreq/cppc_cpufreq.c | 8 +++++++- + 1 file changed, 7 insertions(+), 1 deletion(-) + +diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c +index 61d2ac6..c87f655 100644 +--- a/drivers/cpufreq/cppc_cpufreq.c ++++ b/drivers/cpufreq/cppc_cpufreq.c +@@ -80,11 +80,17 @@ static int cppc_cpufreq_set_target(struct cpufreq_policy *policy, + { + struct cpudata *cpu; + struct cpufreq_freqs freqs; ++ u32 desired_perf; + int ret = 0; + + cpu = all_cpu_data[policy->cpu]; + +- cpu->perf_ctrls.desired_perf = (u64)target_freq * policy->max / cppc_dmi_max_khz; ++ desired_perf = (u64)target_freq * cpu->perf_caps.highest_perf / cppc_dmi_max_khz; ++ /* Return if it is exactly the same perf */ ++ if (desired_perf == cpu->perf_ctrls.desired_perf) ++ return ret; ++ ++ cpu->perf_ctrls.desired_perf = desired_perf; + freqs.old = policy->cur; + freqs.new = target_freq; + +-- +1.8.3.1 + diff --git a/SPECS/kernel-aarch64.spec b/SPECS/kernel-aarch64.spec index ffaafe7..2aff470 100644 --- a/SPECS/kernel-aarch64.spec +++ b/SPECS/kernel-aarch64.spec @@ -12,7 +12,7 @@ Summary: The Linux kernel %define rpmversion 4.5.0 %define pkgrelease 15.el7 -%define centupdate 16.el7 +%define centupdate 17.el7 # allow pkg_release to have configurable %{?dist} tag %define specrelease %%SPECRELEASE%% @@ -324,6 +324,10 @@ Source58: config-generic Source59: config-debug Source60: config-centos-sig +#APM Patches +Patch1001: 1001-cpufreq-CPPC-Avoid-overflow-when-calculating-desired.patch +Patch1002: 1002-cpufreq-CPPC-Correct-desired_perf-calculation.patch + # QDF2400 Patches Patch4000: 4000-arm64-Define-Qualcomm-Technologies-ARMv8-CPU.patch Patch4001: 4001-arm64-Workaround-Falkor-E1003.patch @@ -657,6 +661,10 @@ if [ ! -d .git ]; then git commit -a -q -m "baseline" fi +# Aplly APM patches +git am %{PATCH1001} +git am %{PATCH1002} + # Apply QDF2400 patches git am %{PATCH4000} git am %{PATCH4001} @@ -1434,6 +1442,9 @@ fi %kernel_variant_files %{with_debug} kernel-debug debug %changelog +* Thu Nov 10 2016 Duc Dang <dhdang(a)apm.com> [4.5.0-17.el7] +- Add cpufreq CPPC bug fixes + * Mon Nov 07 2016 Christopher Covington <cov(a)codeaurora.org> [4.5.0-16.el7] - Add git machinery (Jim Perrin) -- 1.8.3.1

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[PATCH 00/11] Integrate upstream patches for APM X-Gene SoC
by Duc Dang 11 Nov '16

11 Nov '16

This series integrates already accepted (or already posted and got acked) patches that: + Provide bug fixes for cppcc_cpufreq driver, i2c-designware driver, mailbox driver, X-Gene SlimPRO I2C driver, GIC PCI legacy interrupt polarity. + Add support for X-Gene HWMon + Add support for X-Gene SoC PMU + Update X-Gene Enet driver The series also enables cppc_cpufreq, i2c-designware drivers by default. Duc Dang (11): Add cpufreq CPPC fixes Enable CONFIG_ACPI_CPPC_CPUFREQ by default Integrate upstream fix for return value of pcc_mbox_request_channel Add X-Gene HWMon support Add X-Gene SoC PMU support Integrate fix to avoid DMA buffer overrun on X-Gene SlimPRO I2C driver Integrate upstream patches for X-Gene Enet driver Integrate upstream fix for GIC default PCI IRQ polarity Add SMBus block read/write support for Designware I2C Enable I2C Designware support by default Integrate upstream fix to make X-Gene HWmon access mailbox as RAM ...C-Avoid-overflow-when-calculating-desired.patch | 31 + ...req-CPPC-Correct-desired_perf-calculation.patch | 46 + ...-Fix-return-value-of-pcc_mbox_request_cha.patch | 33 + ...on-dtb-xgene-Add-hwmon-dts-binding-docume.patch | 39 + SOURCES/1005-hwmon-Add-xgene-hwmon-driver.patch | 850 +++++++++++ ...-Fix-crash-when-alarm-occurs-before-drive.patch | 158 ++ ...Add-APM-X-Gene-SoC-Performance-Monitoring.patch | 1508 ++++++++++++++++++++ ...1008-perf-xgene-Remove-bogus-IS_ERR-check.patch | 39 + ...S-Add-entry-for-APM-X-Gene-SoC-PMU-driver.patch | 34 + .../1010-i2c-xgene-Avoid-dma_buffer-overrun.patch | 32 + ...net-xgene-fix-error-handling-during-reset.patch | 72 + ...-net-xgene-fix-backward-compatibility-fix.patch | 47 + ...t-apm-xgene-use-phydev-from-struct-net_de.patch | 150 ++ ...014-drivers-net-xgene-Fix-MSS-programming.patch | 297 ++++ ...net-xgene-fix-Use-GPIO-to-get-link-status.patch | 91 ++ ...-xgene-fix-Disable-coalescing-on-v1-hardw.patch | 61 + ...-xgene-fix-Coalescing-values-for-v2-hardw.patch | 67 + ...ix-GIC-irq-model-default-PCI-IRQ-polarity.patch | 83 ++ ...are-Implement-support-for-SMBus-block-rea.patch | 135 ++ .../1020-hwmon-xgene-access-mailbox-as-RAM.patch | 124 ++ SOURCES/config-arm64 | 4 +- SOURCES/config-generic | 6 +- SPECS/kernel-aarch64.spec | 57 +- 23 files changed, 3959 insertions(+), 5 deletions(-) create mode 100644 SOURCES/1001-cpufreq-CPPC-Avoid-overflow-when-calculating-desired.patch create mode 100644 SOURCES/1002-cpufreq-CPPC-Correct-desired_perf-calculation.patch create mode 100644 SOURCES/1003-mailbox-PCC-Fix-return-value-of-pcc_mbox_request_cha.patch create mode 100644 SOURCES/1004-Documentation-dtb-xgene-Add-hwmon-dts-binding-docume.patch create mode 100644 SOURCES/1005-hwmon-Add-xgene-hwmon-driver.patch create mode 100644 SOURCES/1006-hwmon-xgene-Fix-crash-when-alarm-occurs-before-drive.patch create mode 100644 SOURCES/1007-perf-xgene-Add-APM-X-Gene-SoC-Performance-Monitoring.patch create mode 100644 SOURCES/1008-perf-xgene-Remove-bogus-IS_ERR-check.patch create mode 100644 SOURCES/1009-MAINTAINERS-Add-entry-for-APM-X-Gene-SoC-PMU-driver.patch create mode 100644 SOURCES/1010-i2c-xgene-Avoid-dma_buffer-overrun.patch create mode 100644 SOURCES/1011-net-xgene-fix-error-handling-during-reset.patch create mode 100644 SOURCES/1012-net-xgene-fix-backward-compatibility-fix.patch create mode 100644 SOURCES/1013-net-ethernet-apm-xgene-use-phydev-from-struct-net_de.patch create mode 100644 SOURCES/1014-drivers-net-xgene-Fix-MSS-programming.patch create mode 100644 SOURCES/1015-drivers-net-xgene-fix-Use-GPIO-to-get-link-status.patch create mode 100644 SOURCES/1016-drivers-net-xgene-fix-Disable-coalescing-on-v1-hardw.patch create mode 100644 SOURCES/1017-drivers-net-xgene-fix-Coalescing-values-for-v2-hardw.patch create mode 100644 SOURCES/1018-ACPI-PCI-fix-GIC-irq-model-default-PCI-IRQ-polarity.patch create mode 100644 SOURCES/1019-i2c-designware-Implement-support-for-SMBus-block-rea.patch create mode 100644 SOURCES/1020-hwmon-xgene-access-mailbox-as-RAM.patch -- 1.8.3.1

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[PATCH 00/30] Cavium ThunderX NIC driver patches for linux-4.5.0-15.el7
by mohun106＠gmail.com 11 Nov '16

11 Nov '16

From: Radha Mohan Chintakuntla <rchintakuntla(a)cavium.com> Thi is a series of patches that have updates to the Cavium ThunderX NIC driver against linux-4.5.0-15.el7. Radha Mohan Chintakuntla (2): net: thunderx: Reset receive queue stats net: thunderx: Introduce BGX_ID_MASK macro to extract bgx_id Sunil Goutham (25): net: thunderx: Moved HW capability info from macros to structure net: thunderx: Add VNIC's PCI devid on future chips net: thunderx: Add support for 81xx and 83xx chips net: thunderx: Set queue count based on number of CPUs net: thunderx: Enable CQE_RX desc's extension fields net: thunderx: Enable mailbox interrupts on 81xx/83xx net: thunderx: Support for different LMAC types within BGX net: thunderx: Add 81xx support to BGX driver net: thunderx: Add QSGMII interface type support net: thunderx: Add RGMII interface type support net: thunderx: Add support for 16 LMACs of 83xx net: thunderx: Support for 83xx mixed QLM/DLM config net: thunderx: Use netdev's name for naming VF's interrupts net: thunderx: Use skb_add_rx_frag() for split buffer Rx pkts net: thunderx: Don't set mac address for secondary Qset VFs net: thunderx: Use netdev_rss_key_fill() helper net: thunderx: Don't set RX_PACKET_DIS while initializing net: thunderx: Fix for HW issue while padding TSO packet net: thunderx: Fix for issues with multiple CQEs posted for a TSO packet net: thunderx: Fix issue with IRQ namimg net: thunderx: Support for byte queue limits net: thunderx: 80xx BGX0 configuration changes net: thunderx: Program LMAC credits based on MTU net: thunderx: Fix configuration of L3/L4 length checking net: thunderx: Cleanup VF statistics Thanneeru Srinivasulu (1): net: thunderx: Add ethtool support for supported ports and link modes. Wei Yongjun (1): net: thunderx: Remove unnecessary pci_set_drvdata() Zyta Szpak (1): net: thunderx: Configure tunnelling protocol parsing drivers/net/ethernet/cavium/thunder/Makefile | 1 + drivers/net/ethernet/cavium/thunder/nic.h | 125 +++--- drivers/net/ethernet/cavium/thunder/nic_main.c | 422 ++++++++++++++---- drivers/net/ethernet/cavium/thunder/nic_reg.h | 16 + .../net/ethernet/cavium/thunder/nicvf_ethtool.c | 141 ++++-- drivers/net/ethernet/cavium/thunder/nicvf_main.c | 217 +++++---- drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 254 +++++++---- drivers/net/ethernet/cavium/thunder/nicvf_queues.h | 29 +-- drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 475 +++++++++++++------- drivers/net/ethernet/cavium/thunder/thunder_bgx.h | 35 +- drivers/net/ethernet/cavium/thunder/thunder_xcv.c | 235 ++++++++++ 11 files changed, 1359 insertions(+), 591 deletions(-) create mode 100644 drivers/net/ethernet/cavium/thunder/thunder_xcv.c

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APM X-Gene patches for CentOS 7.3 and questions
by Duc Dang 10 Nov '16

10 Nov '16

Hi Jim, I am preparing APM X-Gene patches for CentOS 7.3 kernel. Beside these patches, there are patches for feature that not X-Gene specific but for multiple Arm64 platform like CPPC/PCC related bug fixes and "ACPI / processor_idle: Add ACPI v6.0 LPI support" series (https://www.spinics.net/lists/arm-kernel/msg519357.html). Are you open to take these already upstream patches/features if I help generate patches for them on-top of CentOS 7.3? Regards, Duc Dang.

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Cavium ThunderX NIC patches pull request
by Radha Mohan 10 Nov '16

10 Nov '16

Hi Jim, I work for Cavium and came to know that you would be accepting patches for inclusion into CentOS 7.3 this week. We have few NIC driver patches that we would like inclusion into CentOS 7.3 kernel and not present in RHEL 7.3. Could you please pick these? Or do you prefer sending patches to this list ? >From https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/log/dr… net: thunderx: Support for byte queue limits net: thunderx: Fix issue with IRQ namimg net: thunderx: Fix for issues with multiple CQEs posted for a TSO packet net: thunderx: Fix for HW issue while padding TSO packet net: thunderx: Fix OOPs with ethtool --register-dump net: thunderx: Remove unnecessary pci_set_drvdata() net: thunderx: Don't set RX_PACKET_DIS while initializing net: thunderx: Use netdev_rss_key_fill() helper net: thunderx: Configure tunnelling protocol parsing net: thunderx: Use napi_consume_skb for bulk free net: thunderx: Don't set mac address for secondary Qset VFs net: thunderx: Reset RXQ HW stats when interface is brought down net: thunderx: Improvement for MBX interface debug messages net: thunderx: Use skb_add_rx_frag() for split buffer Rx pkts net: thunderx: Use netdev's name for naming VF's interrupts net: thunderx: Support for 83xx mixed QLM/DLM config net: thunderx: Add support for 16 LMACs of 83xx net: thunderx: Add RGMII interface type support net: thunderx: Add QSGMII interface type support net: thunderx: Add 81xx support to BGX driver net: thunderx: Support for different LMAC types within BGX net: thunderx: Enable mailbox interrupts on 81xx/83xx net: thunderx: Enable CQE_RX desc's extension fields net: thunderx: Set queue count based on number of CPUs net: thunderx: Add support for 81xx and 83xx chips net: thunderx: Add VNIC's PCI devid on future chips net: thunderx: Moved HW capability info from macros to structure regards, Radha Mohan

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[PATCH 1/2] Forward port CentOS AltArch git machinery
by Christopher Covington 09 Nov '16

09 Nov '16

From: Jim Perrin <jperrin(a)centos.org> Copy in the git machinery from CentOS AltArch 7.2 (commit 9933f223293366d995fb4759f4f97168a038f5d0) to make the preparation of patches in series easy. [Rebase from CentOS AltArch 7.2 onto CentOS AltArch 7.3] Signed-off-by: Christopher Covington <cov(a)codeaurora.org> --- SOURCES/config-centos-sig | 2 ++ SPECS/kernel-aarch64.spec | 16 ++++++++++++++-- 2 files changed, 16 insertions(+), 2 deletions(-) create mode 100644 SOURCES/config-centos-sig diff --git a/SOURCES/config-centos-sig b/SOURCES/config-centos-sig new file mode 100644 index 0000000..3f73759 --- /dev/null +++ b/SOURCES/config-centos-sig @@ -0,0 +1,2 @@ +# This file is for SIG members to add additional configuration options +# common to CentOS SIGs but not configured in other config files diff --git a/SPECS/kernel-aarch64.spec b/SPECS/kernel-aarch64.spec index fa31182..e7af8ae 100644 --- a/SPECS/kernel-aarch64.spec +++ b/SPECS/kernel-aarch64.spec @@ -12,11 +12,12 @@ Summary: The Linux kernel %define rpmversion 4.5.0 %define pkgrelease 15.el7 +%define centupdate 15.el7 # allow pkg_release to have configurable %{?dist} tag %define specrelease %%SPECRELEASE%% -%define pkg_release %{pkgrelease}%{?buildid} +%define pkg_release %{centupdate}%{?buildid} # The kernel tarball/base version %define rheltarball %{rpmversion}-%{pkgrelease} @@ -240,6 +241,7 @@ BuildRequires: hostname, net-tools, bc BuildRequires: xmlto, asciidoc BuildRequires: openssl openssl-devel BuildRequires: hmaccalc +BuildRequires: git %ifarch x86_64 BuildRequires: pesign >= 0.109-4 %endif @@ -320,6 +322,7 @@ Source56: config-arm64-redhat Source57: config-nodebug-redhat Source58: config-generic Source59: config-debug +Source60: config-centos-sig # empty final patch to facilitate testing of kernel patches Patch999999: linux-kernel-test.patch @@ -640,6 +643,15 @@ make -f %{SOURCE30} VERSION=%{version} configs ApplyOptionalPatch linux-kernel-test.patch +if [ ! -d .git ]; then + git init + git config user.email "noreply(a)centos.org" + git config user.name "AltArch Kernel" + git config gc.auto 0 + git add . + git commit -a -q -m "baseline" +fi + # Any further pre-build tree manipulations happen here. chmod +x scripts/checkpatch.pl @@ -668,7 +680,7 @@ rm -f kernel-%{version}-*debug.config # now run oldconfig over all the config files for i in *.config do - mv $i .config + perl merge.pl config-centos-sig $i > .config Arch=`head -1 .config | cut -b 3-` %{make} ARCH=$Arch listnewconfig | grep -E '^CONFIG_' >.newoptions || true %if %{listnewconfig_fail} -- Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.

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CentOS 7.3.1611armhfp (re)build started ...
by Fabian Arrotin 06 Nov '16

06 Nov '16

Hi, As you probably know, upstream RHEL 7.3 was released this week. Parallel to the x86_64 rebuild, I wanted to kick the armhfp rebuild. As always, we start by gcc, then glibc, and then the rest. While gcc / binutils built fine (see http://armv7.dev.centos.org/repodir/c71611-pass-1/ for the artifacts and http://armv7.dev.centos.org/rpmbuild/c71611-pass-1/ for the build logs) , glibc actually fails : http://armv7.dev.centos.org/rpmbuild/c71611-pass-1/15679-glibc-2.17-157.el7… That one has to be fixed before launching the massive rebuild. I'm myself in "offline" mode those days, and I'll be in Paris next week for the CentOS Interlock, so if you want to help, have a look at those failing pkgs and possible root cause explanations (and patches ?) and report your findings on this list ? Cheers, -- Fabian Arrotin The CentOS Project | http://www.centos.org gpg key: 56BEC54E | twitter: @arrfab

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armv7hl kernel update for Dirty COW
by Ian Pilcher 31 Oct '16

31 Oct '16

Can we expect an armv7hl kernel update to address CVE-2016-5195? -- ======================================================================== Ian Pilcher arequipeno(a)gmail.com -------- "I grew up before Mark Zuckerberg invented friendship" -------- ========================================================================

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kernel armhfp 4.4.26 - feedback wanted !
by Fabian Arrotin 24 Oct '16

24 Oct '16

Hi, With the recent CVE-2016-5195 (aka "Dirty Cow"), we bumped the armhfp kernels to the following version : 4.4.26 (both for "generic" and rpi2/rpi3) Before releasing those to mirror.centos.org (and also sign those) we'd like some people to test the updated/unsigned kernels (feedback wanted !) - create the /etc/yum.repos.d/ .repo file pointing to corresponding repo, depending on your board : - http://dev.centos.org/centos/7/kernel/armhfp/kernel-generic/ - http://dev.centos.org/centos/7/kernel/armhfp/kernel-rpi2/ as an example, here is how it would look like : [kernel-generic] name=armhfp kernel generic baseurl=http://dev.centos.org/centos/7/kernel/armhfp/kernel-generic/ gpgcheck=0 enabled=1 or [kernel-rpi2] name=armhfp rpi2 kernel baseurl=http://dev.centos.org/centos/7/kernel/armhfp/kernel-rpi2/ gpgcheck=0 enabled=1 - now "yum clean all ; yum update" PS : for rpi2/3, the system will automatically use the updated kernel on next reboot PS2 : for "generic" (so cubietruck, etc) you still need to : - modify /boot/extlinux/extlinux.conf to reflect new kernel PS3 : depending on the image you're using for cubietruck/bananapi, the /boot space is probably just too small, so dracuty will complain about not able to probably build the -rescue- initramfs (which isn't needed) : just be sure that kernel and initramfs were built before rebooting, and you can also remove the undeeded files in /boot : rm uIm* uInit* Cheers, -- Fabian Arrotin The CentOS Project | http://www.centos.org gpg key: 56BEC54E | twitter: @arrfab

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USB on PI3
by Björn Dieding 18 Oct '16

18 Oct '16

Hello, I am tying the raspberry image on a pi3. Somehow I am not sure, if USB is properly working. The WIKI pages says it does (https://wiki.centos.org/SpecialInterestGroup/AltArch/Arm32/RaspberryPi3). Does someone get the same result or what message do you get? [root@support ~]# export LIBUSB_DEBUG=9 [root@support ~]# lsusb -v libusbx: debug [libusb_init] created default context libusbx: debug [libusb_init] libusbx v1.0.15.10646 libusbx: error [op_init] could not find usbfs unable to initialize libusb: -99 On my regular centos servers I get a proper result. Best regards, Björn Dieding

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