Re: [PATCH v1] xen/riscv: Increase XEN_VIRT_SIZE

[Julien Grall <julien@xxxxxxx>]

Hi Jan,

On 31/03/2025 17:14, Jan Beulich wrote:
> On 31.03.2025 17:20, Oleksii Kurochko wrote:
> > A randconfig job failed with the following issue:
> >    riscv64-linux-gnu-ld: Xen too large for early-boot assumptions
> >
> > The reason is that enabling the UBSAN config increased the size of
> > the Xen binary.
> >
> > Increase XEN_VIRT_SIZE to reserve enough space, allowing both UBSAN
> > and GCOV to be enabled together, with some slack for future growth.
> At some point you may want to use 2M mappings for .text (rx), .rodata
> (r), and .data (rw).
OOI, why would we want to switch to 2MB? At least on Arm, Xen is tiny 
enough that it can fit in less than a couple of MB. I would expect the 
same for RISC-V.
Cheers,

--
Julien Grall