Re: cma can't activate area on arm64
From: Robin Murphy <robin.murphy@arm.com>
Date: 2020-02-28 21:00:45
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On 2020-02-28 8:34 pm, Jonathan Richardson wrote:
On Fri, Feb 28, 2020 at 12:16 PM Nicolas Saenz Julienne [off-list ref] wrote:quoted
On Fri, 2020-02-28 at 11:56 -0800, Jonathan Richardson wrote:quoted
This is stingray (arch/arm64/boot/dts/broadcom/stingray/bcm958742k.dts). cma is specified on cmdline as "cma=1G". The full boot log was in the attachment.Would you mind attaching it again, I was added to the conversation later.Sure, it is attached. Thanks for taking a look. This is a boot with "arch/arm64/configs/defconfig" and the previously mentioned dtb.
[ 0.000000] efi: SMBIOS=0x85c90000 SMBIOS 3.0=0x85a20000 ACPI 2.0=0x85d50000 MEMATTR=0x8945e118 MEMRESERVE=0x85f85018 [ 0.000000] crashkernel reserved: 0x00000000e0000000 - 0x0000000100000000 (512 MB) [ 0.000000] cma: Reserved 1024 MiB at 0x00000000a0000000 ... [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x0000000080000000-0x00000000bfffffff] [ 0.000000] DMA32 [mem 0x00000000c0000000-0x00000000ffffffff] Well there's your problem - both zones are only nominally 1GB to begin with, and both have stuff in them before we even get to placing CMA. To be honest, even without ZONE_DMA that looks pretty tight. Robin. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel