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cd4fe549ee
J722S maps DDR above the first 2 GB at 0x8_8000_0000, out of reach of the 32-bit R5F, while a 64-bit Linux peer posts virtio buffers there. Dedicates RAT region 0 as a 16 MB window at 0xFE000000. am67_rat_map() re-aims it and returns a pointer plus the bytes left before the edge, so callers can split copies that straddle it. The window is Non-cacheable, since it retargets at runtime and cached lines would alias across physical blocks. A mapping is valid only until the next call; the sole user, vhost-net, is serialised on the netdev work thread. Assisted-by: Claude Code:claude-fable-5 Signed-off-by: Ulaş Sertan Kemeç <sertan.usk@gmail.com> |
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| arm | ||
| arm64 | ||
| avr | ||
| ceva | ||
| dummy | ||
| hc | ||
| mips | ||
| misoc | ||
| or1k | ||
| renesas | ||
| risc-v | ||
| sim | ||
| sparc | ||
| tricore | ||
| x86 | ||
| x86_64 | ||
| xtensa | ||
| z16 | ||
| z80 | ||
| CMakeLists.txt | ||
| Kconfig | ||