[PATCH v3 00/22] riscv: Memory type control for platforms with physical memory aliases

[Marcel Ziswiler]

Hi Samuel

On Fri, 2025-12-19 at 08:10 +0000, patchwork-bot+linux-riscv at kernel.org wrote:
> Hello:
> 
> This series was applied to riscv/linux.git (fixes)
> by Andrew Morton <akpm at linux-foundation.org>:

Any idea what happened to patches 04-22 as I don't think anything other than patches 01-03 ever got applied
anywhere. Or am I missing anything?

For what it's worth I carried an updated patch set through up to v6.19.4 [1] and latest -next, which at least
on EBC77 seems to work fine.

Thanks!

Cheers

Marcel

[1] https://github.com/riscv/meta-riscv/pull/602

> On Wed, 12 Nov 2025 17:45:13 -0800 you wrote:
> > On some RISC-V platforms, including StarFive JH7100 and ESWIN EIC7700,
> > DRAM is mapped to multiple physical address ranges, with each alias
> > having a different set of statically-determined Physical Memory
> > Attributes (PMAs), such as cacheability. Software can alter the PMAs for
> > a page by selecting a PFN from the corresponding physical address range.
> > On these platforms, this is the only way to allocate noncached memory
> > for use with noncoherent DMA.
> > 
> > [...]
> 
> Here is the summary with links:
>   - [v3,01/22] mm/ptdump: replace READ_ONCE() with standard page table accessors
>     https://git.kernel.org/riscv/c/11119b19f62d
>   - [v3,02/22] mm: replace READ_ONCE() with standard page table accessors
>     https://git.kernel.org/riscv/c/c0efdb373c3a
>   - [v3,03/22] mm/dirty: replace READ_ONCE() with pudp_get()
>     https://git.kernel.org/riscv/c/b4e53984f240
>   - [v3,04/22] perf/events: replace READ_ONCE() with standard page table accessors
>     (no matching commit)
>   - [v3,05/22] mm: Move the fallback definitions of pXXp_get()
>     (no matching commit)
>   - [v3,06/22] mm: Always use page table accessor functions
>     (no matching commit)
>   - [v3,07/22] checkpatch: Warn on page table access without accessors
>     (no matching commit)
>   - [v3,08/22] mm: Allow page table accessors to be non-idempotent
>     (no matching commit)
>   - [v3,09/22] riscv: hibernate: Replace open-coded pXXp_get()
>     (no matching commit)
>   - [v3,10/22] riscv: mm: Always use page table accessor functions
>     (no matching commit)
>   - [v3,11/22] riscv: mm: Simplify set_p4d() and set_pgd()
>     (no matching commit)
>   - [v3,12/22] riscv: mm: Deduplicate _PAGE_CHG_MASK definition
>     (no matching commit)
>   - [v3,13/22] riscv: ptdump: Only show N and MT bits when enabled in the kernel
>     (no matching commit)
>   - [v3,14/22] riscv: mm: Fix up memory types when writing page tables
>     (no matching commit)
>   - [v3,15/22] riscv: mm: Expose all page table bits to assembly code
>     (no matching commit)
>   - [v3,16/22] riscv: alternative: Add an ALTERNATIVE_3 macro
>     (no matching commit)
>   - [v3,17/22] riscv: alternative: Allow calls with alternate link registers
>     (no matching commit)
>   - [v3,18/22] riscv: Fix logic for selecting DMA_DIRECT_REMAP
>     (no matching commit)
>   - [v3,19/22] dt-bindings: riscv: Describe physical memory regions
>     (no matching commit)
>   - [v3,20/22] riscv: mm: Use physical memory aliases to apply PMAs
>     (no matching commit)
>   - [v3,21/22] riscv: dts: starfive: jh7100: Use physical memory ranges for DMA
>     (no matching commit)
>   - [v3,22/22] riscv: dts: eswin: eic7700: Use physical memory ranges for DMA
>     (no matching commit)
> 
> You are awesome, thank you!