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SubjectRe: [PATCH 0/4] riscv: 64-bit NOMMU fixes and enhancements
On Mon, Feb 26, 2024 at 04:34:45PM -0800, Samuel Holland wrote:
> This series aims to improve support for NOMMU, specifically by making it
> easier to test NOMMU kernels in QEMU and on various widely-available
> hardware (errata permitting). After all, everything supports Svbare...
>
> After applying this series, a NOMMU kernel based on defconfig (changing
> only the three options below*) boots to userspace on QEMU when passed as
> -kernel.
>
> # CONFIG_RISCV_M_MODE is not set
> # CONFIG_MMU is not set
> CONFIG_NONPORTABLE=y
>
> *if you are using LLD, you must also disable BPF_SYSCALL and KALLSYMS,
> because LLD bails on out-of-range references to undefined weak symbols.

That's not new to these patches though, right? IIRC that's an existing
issue.

Cheers,
Conor.

>
>
> Samuel Holland (4):
> riscv: Fix TASK_SIZE on 64-bit NOMMU
> riscv: Fix loading 64-bit NOMMU kernels past the start of RAM
> riscv: Remove MMU dependency from Zbb and Zicboz
> riscv: Allow NOMMU kernels to run in S-mode
>
> arch/riscv/Kconfig | 17 ++++++++++-------
> arch/riscv/include/asm/page.h | 2 +-
> arch/riscv/include/asm/pgtable.h | 2 +-
> arch/riscv/mm/init.c | 2 +-
> 4 files changed, 13 insertions(+), 10 deletions(-)
>
> --
> 2.43.0
>
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