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Re: [PATCH v4] ARM64: dts: meson-gx: Add reserved memory zone and usable memory range

From Andreas Färber <afaerber@suse.de>
Newsgroups linux.kernel
Subject Re: [PATCH v4] ARM64: dts: meson-gx: Add reserved memory zone and usable memory range
Date 2017-01-18 01:50 +0100
Message-ID <t0MBQ-5zP-15@gated-at.bofh.it> (permalink)
References (2 earlier) <sZUi6-3FV-7@gated-at.bofh.it> <t0d1o-7E3-3@gated-at.bofh.it> <t0v7Y-3oT-25@gated-at.bofh.it> <t0xjs-4DL-11@gated-at.bofh.it> <t0LZ7-5nf-23@gated-at.bofh.it>
Organization SUSE Linux GmbH

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Am 18.01.2017 um 01:00 schrieb Andreas Färber:
> Am 17.01.2017 um 09:21 schrieb Neil Armstrong:
>> The stress-ng package provides this "stress" command and is used to force the kernel to map more memory
>> zones, but I also got the issue while running a fully fledged Desktop Environment thanks to the
>> recently merged DRM driver.
>> You may not be able to trigger the issue since it seems Amlogic reduces this reserved size on GXL/GXM :
>> https://github.com/khadas/linux/commit/698df2c6cfbb0d1a9359743208e83517b31da6ce
>> But it should be confirmed.
> 
> Confirming no issues on three runs on meson-gxm-rbox-pro:
> 
> boxer:~ # stress-ng --vm 4 --vm-bytes 128M --timeout 10s &
> [1] 2528
> boxer:~ # stress-ng: info:  [2528] dispatching hogs: 4 vm
> stress-ng: info:  [2528] cache allocate: default cache size: 256K
> stress-ng: info:  [2528] successful run completed in 10.07s
> 
> [1]+  Done                    stress-ng --vm 4 --vm-bytes 128M --timeout 10s
> boxer:~ # stress-ng --vm 4 --vm-bytes 128M --timeout 10s
> stress-ng: info:  [2537] dispatching hogs: 4 vm
> stress-ng: info:  [2537] cache allocate: default cache size: 256K
> stress-ng: info:  [2537] successful run completed in 10.07s
> boxer:~ # stress-ng --vm 4 --vm-bytes 128M --timeout 10s
> stress-ng: info:  [2546] dispatching hogs: 4 vm
> stress-ng: info:  [2546] cache allocate: default cache size: 256K
> stress-ng: info:  [2546] successful run completed in 10.07s
> boxer:~ #

Similar results on meson-gxbb-vega-s95-telos (except 512K cache size),
with both mainline EFI and vendor U-Boot.

I notice that I don't have CONFIG_DRM enabled - maybe related?

Regards,
Andreas

-- 
SUSE Linux GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)

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Re: [PATCH v4] ARM64: dts: meson-gx: Add reserved memory zone and  usable memory range Olof Johansson <olof@lixom.net> - 2017-01-17 07:10 +0100
  Re: [PATCH v4] ARM64: dts: meson-gx: Add reserved memory zone and  usable memory range Neil Armstrong <narmstrong@baylibre.com> - 2017-01-17 09:30 +0100
    Re: [PATCH v4] ARM64: dts: meson-gx: Add reserved memory zone and  usable memory range Andreas Färber <afaerber@suse.de> - 2017-01-18 01:10 +0100
      Re: [PATCH v4] ARM64: dts: meson-gx: Add reserved memory zone and  usable memory range Andreas Färber <afaerber@suse.de> - 2017-01-18 01:50 +0100
        Re: [PATCH v4] ARM64: dts: meson-gx: Add reserved memory zone and  usable memory range Neil Armstrong <narmstrong@baylibre.com> - 2017-01-18 12:10 +0100
      Re: [PATCH v4] ARM64: dts: meson-gx: Add reserved memory zone and  usable memory range Neil Armstrong <narmstrong@baylibre.com> - 2017-01-18 12:10 +0100
      Re: [PATCH v4] ARM64: dts: meson-gx: Add reserved memory zone and usable memory range Kevin Hilman <khilman@baylibre.com> - 2017-01-18 21:00 +0100

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