Control: tags -1 moreinfo Hi Wookey, Le 2021-01-27 12:57, Wookey a écrit : > Source: linux > Version: Please enable ARM CMN-600 power management on arm64 > Severity: normal > Tags: patch > > Current arm hardware such as graviton2 (AWS arm64 hardware) has > 'Coherent Mesh Network' interconnect (between components in a > soc). It's important that support for this is built in the kernel so > it can be used. > > This requires CONFIG_ARM_CMN=y Does it really have to be built-in instead of being provided as a module? Last I checked, Fedora and Ubuntu provide it as a module. > This explains what the feature is: > https://www.arm.com/products/silicon-ip-system/corelink-interconnect/cmn-600 > Graviton2: > https://www.anandtech.com/show/15578/cloud-clash-amazon-graviton2-arm-against-intel-and-amd > > patch attached: > --- debian/config/arm64/config~ 2021-01-27 04:34:51.359552398 +0000 > +++ debian/config/arm64/config 2021-01-27 04:53:11.922998842 +0000 > @@ -942,6 +942,7 @@ > CONFIG_ARM_CCI400_PMU=y > CONFIG_ARM_CCI5xx_PMU=y > CONFIG_ARM_CCN=y > +CONFIG_ARM_CMN=y > CONFIG_QCOM_L2_PMU=y > CONFIG_QCOM_L3_PMU=y > CONFIG_XGENE_PMU=y > --- debian/config/arm64/config~ 2021-01-27 04:34:51.359552398 +0000 > +++ debian/config/arm64/config 2021-01-27 04:53:11.922998842 +0000 > @@ -942,6 +942,7 @@ > CONFIG_ARM_CCI400_PMU=y > CONFIG_ARM_CCI5xx_PMU=y > CONFIG_ARM_CCN=y > +CONFIG_ARM_CMN=y > CONFIG_QCOM_L2_PMU=y > CONFIG_QCOM_L3_PMU=y > CONFIG_XGENE_PMU=y Cheers, Vincent
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