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Find a way to log meesages from cgo #859
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closing issue, we are not using cgo |
egernst
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Feb 9, 2021
Currently, rootBusPath is set as a constant value. Bus this pcie bus path is not alway static, eg. the rootBus on arm64 is "/devices/platform/4010000000.pcie/pci0000:00". The address part of "4010000000.pcie" may vary with the maxMem in qemu so it should not be a fixed value. For exmaple: HIGH PCIE address reserved in qemu on virt is from 0 to 512G. The lower part of address may be allocated to normal memory. In general, normal memory is largely less than 256G, so the base address of HIGH PCIE can be 256G. But, in case the maxmem is large enough, like around 256G, the base address of HIGH PCIE must be increase, eg. 300G. In the current implementation of kata-runtime, the maxmem in qemu is the host memory size. So if the host memory size is large enough, the prefix of the pci device path name will be different from rootBusPath set in kata-agent which can lead to failure on device hotplug. This patch offer a mechanism to create rootBusPath dynamically but only give implemention for arm64 and return the default value of rootBusPath for other arch. Fixes: kata-containers#859 Signed-off-by: Jianyong Wu <[email protected]>
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Fix cgo logging system
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