Hello:
This series was applied to riscv/linux.git (for-next)
by Palmer Dabbelt <palmer@xxxxxxxxxxxx>:
On Wed, 8 Nov 2023 08:59:28 +0100 you wrote:
> Those 2 patches fix the set_memory_XX() and set_direct_map_XX() APIs, which
> in turn fix STRICT_KERNEL_RWX and memfd_secret(). Those were broken since the
> permission changes were not applied to the linear mapping because the linear
> mapping is mapped using hugepages and walk_page_range_novma() does not split
> such mappings.
>
> To fix that, patch 1 disables PGD mappings in the linear mapping as it is
> hard to propagate changes at this level in *all* the page tables, this has the
> downside of disabling PMD mapping for sv32 and PUD (1GB) mapping for sv39 in
> the linear mapping (for specific kernels, we could add a Kconfig to enable
> ARCH_HAS_SET_DIRECT_MAP and STRICT_KERNEL_RWX if needed, I'm pretty sure we'll
> discuss that).
>
> [...]
Here is the summary with links:
- [RESEND,v2,1/2] riscv: Don't use PGD entries for the linear mapping
https://git.kernel.org/riscv/c/629db01c64ff
- [RESEND,v2,2/2] riscv: Fix set_memory_XX() and set_direct_map_XX() by splitting huge linear mappings
https://git.kernel.org/riscv/c/311cd2f6e253
You are awesome, thank you!
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