Re: RISC-V nommu support v5

[Anup Patel]

Hi Paul/Palmer,

On Thu, Oct 17, 2019 at 11:07 PM Christoph Hellwig <hch@xxxxxx> wrote:
>
> Hi all,
>
> below is a series to support nommu mode on RISC-V.  For now this series
> just works under qemu with the qemu-virt platform, but Damien has also
> been able to get kernel based on this tree with additional driver hacks
> to work on the Kendryte KD210, but that will take a while to cleanup
> an upstream.
>
> A git tree is available here:
>
>     git://git.infradead.org/users/hch/riscv.git riscv-nommu.5
>
> Gitweb:
>
>     http://git.infradead.org/users/hch/riscv.git/shortlog/refs/heads/riscv-nommu.5
>
> I've also pushed out a builtroot branch that can build a RISC-V nommu
> root filesystem here:
>
>    git://git.infradead.org/users/hch/buildroot.git riscv-nommu.2
>
> Gitweb:
>
>    http://git.infradead.org/users/hch/buildroot.git/shortlog/refs/heads/riscv-nommu.2

It will be really cool to have this series for Linux-5.4-rcX.

Best Regards,
Anup

>
>
> Changes since v4:
>  - rebased to 5.4-rc + latest riscv fixes
>  - clean up do_trap_break
>  - fix an SR_XPIE issue (Paul Walmsley)
>  - use the symbolic PAGE_OFFSET value in the flat loader
>    (Aurabindo Jayamohanan)
>
> Changes since v3:
>  - improve a few commit message
>  - cleanup riscv_cpuid_to_hartid_mask
>  - cleanup the timer handling
>  - cleanup the IPI handling a little more
>  - renamed CONFIG_M_MODE to CONFIG_RISCV_M_MODE
>  - split out CONFIG_RISCV_SBI to make some of the ifdefs more obbious
>  - use IS_ENABLED wherever possible instead of if ifdefs to make the
>    code more readable
>
> Changes since v2:
>  - rebased to 5.3-rc
>  - remove the EFI image header for nommu builds
>  - set ARCH_SLAB_MINALIGN to ensure stack alignment in the flat binary
>    loader
>  - minor comment improvement
>  - use #defines for more CSRs
>
> Changes since v1:
>  - fixes so that a kernel with this series still work on builds with an
>    IOMMU
>  - small clint cleanups
>  - the binfmt_flat base and buildroot now don't put arguments on the stack
>
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