[Bug ld/24426] Binutils 2.28.1 segfault when presented (any) linker script on riscv64

[kallisti5 at unixzen dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=24426

--- Comment #8 from Alexander von Gluck IV <kallisti5 at unixzen dot com> ---
I'm ok equating this one to an issue on our end.  I think the segfault is an
issue, but since I can't reproduce it on binutils 2.29 or later, it might be
something already fixed... so we can go ahead and close this one if you agree.


One small question:
"I also see in your linker script
        . = 0xFFFFFFFF80000000 + SIZEOF_HEADERS;
In order to put the address 0xFFFFFFFF80000000 on the address bus, you have to
have 64-bit physical addressing, and I'm not aware of any RISC-V target with
64-bit physical addressing.  This is why the linux kernel uses 0x80000000
instead, because that only requires a minimum of 32-bit physical addressing,
which all known 64-bit targets have."


So RV64 only supports 4GB of ram as implemented today?




Our (initial) kernel linker script produced from this ticket is here:
https://review.haiku-os.org/c/haiku/+/1401/3/src/system/ldscripts/riscv64/kernel.ld

Thanks for your help!

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