On Mon, 2018-05-28 at 18:00 +0200, Andrew Lunn wrote: > Hi Rob > > Since my QNAP only has 512M, there is not too much experimentation i > can do. > > Could you try changing "Memory split" to "3G/1G user/kernel split (for > full 1G low memory)".
Don't you mean change it to 2G/2G? That's what would be needed to let the kernel map the whole 1GB of physical RAM in it's address region and so not need the high memory mechanism. > You should then see that the lowmem in the > Virtual kernel memory layout table goes from starting at 0xc0000000 to > starting at 0xB0000000. I hope it will then not use high mem, and > still give you the full 1G of RAM. > -- Tixy

