Linux Port

Does anyone here know which kernel settings are required to allow the RISCOs.IMG binary to run?
I have been trying to run it on a different Aarch64 system (cortex A78) but it complains:
```
Failed to reserve address space, try running “sudo sysctl vm.mmap_min_addr=12288.”
```
even after setting the vm.mmap_min_addr to 12288 it simply won’t budge.

kernel8.img seems to lack a /proc/config.gz so i cannot peek in the config of the RPi5.

have you looked at the device tree for Linux?

Found the issue. The mmap calls on ‘older’ kernels will honor the requested address even if MAP_FIXED is not set. Newer kernels require MAP_FIXED.

RISCOSmark 2.04 (30-Dec-2015) by Richard Spencer 2003
Comparison with RiscPC SA 202MHz running RISC OS 4.02 800x600,256
(HD benchmarks are in kilobytes/sec)

MOS Utilities   5.29 (30 Apr 2021) Git: 1234a4b20
FileSwitch      2.88 (08 Sep 2021)
C Library       6.15 (21 Sep 2022)
FileCore        3.77 (14 Dec 2020)
HAL-based system (Linux HAL PSR Manipulation) tested at Tue,06 Feb 2024.11:59:40
Filing system: IXFS - CSD not set
Graphics Resoloution: 2560x1440, 16M colours

Test                                                   Benchmark
Processor - Looped instructions (cache)                 10842501    6095%
Memory - Multiple register transfer                       157000   96913%
Rectangle Copy - Graphics acceleration test                17442    7207%
Icon Plotting - 16 colour sprite with mask                 90781    4539%
Draw Path - Stroke narrow line                             33935    2175%
Draw Fill - Plot filled shape                              42607    2920%
HD Read - Block load 8MB file                            2903699   97374%
HD Write - Block save 8MB file                             19819     651%
FS Read - Byte stream file in                                614     296%
FS Write - Byte stream file out                              546     284%

Not bad.
The Cortex A78 runs at 2.6 GHz (stock, not overclocked.)