nvme-pci: Disable Host Memory Buffer usage #6510
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Some NVME drives seem to request significant amounts of DMA coherent memory - enough to exhaust our standard 64MB CMA allocation. Try disabling the feature to see what effect it has - drives should continue to function without it. Link: raspberrypi#6504 Signed-off-by: Phil Elwell <[email protected]>
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NVM Express v1.4a s8.9:
So drives shouldn't fail if the allocation fails, but throughput may suffer. |
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kernel: Revert "PCI: Warn if no host bridge NUMA node info" See: raspberrypi/linux#6531 kernel: drm/v3d: Enable Performance Counters before clearing them See: raspberrypi/linux#6514 kernel: configs: Enable Intel Wireless (PCI) drivers See: raspberrypi/linux#6526 kernel: media: i2c: ov9282: Correct the exposure offset See: raspberrypi/linux#6522 kernel: waveshare panel driver update See: raspberrypi/linux#6499 kernel: dtoverlays: Add Arducam override for ov9281 See: raspberrypi/linux#6506 kernel: nvme-pci: Disable Host Memory Buffer usage See: raspberrypi/linux#6510 kernel: Allow setting I²C clock frequency via i2c_arm_baudrate dtparam when using pimidi overlay See: raspberrypi/linux#6513
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kernel: Revert "PCI: Warn if no host bridge NUMA node info" See: raspberrypi/linux#6531 kernel: drm/v3d: Enable Performance Counters before clearing them See: raspberrypi/linux#6514 kernel: configs: Enable Intel Wireless (PCI) drivers See: raspberrypi/linux#6526 kernel: media: i2c: ov9282: Correct the exposure offset See: raspberrypi/linux#6522 kernel: waveshare panel driver update See: raspberrypi/linux#6499 kernel: dtoverlays: Add Arducam override for ov9281 See: raspberrypi/linux#6506 kernel: nvme-pci: Disable Host Memory Buffer usage See: raspberrypi/linux#6510 kernel: Allow setting I²C clock frequency via i2c_arm_baudrate dtparam when using pimidi overlay See: raspberrypi/linux#6513
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Some NVME drives seem to request significant amounts of DMA coherent memory - enough to exhaust our standard 64MB CMA allocation.
Try disabling the feature to see what effect it has - drives should continue to function without it.
Link: #6504