Hello:
This series was applied to riscv/linux.git (for-next) by Palmer Dabbelt palmer@rivosinc.com:
On Wed, 16 Oct 2024 13:27:41 -0700 you wrote:
RISC-V defines three extensions for pointer masking[1]:
- Smmpm: configured in M-mode, affects M-mode
- Smnpm: configured in M-mode, affects the next lower mode (S or U-mode)
- Ssnpm: configured in S-mode, affects the next lower mode (VS, VU, or U-mode)
This series adds support for configuring Smnpm or Ssnpm (depending on which privilege mode the kernel is running in) to allow pointer masking in userspace (VU or U-mode), extending the PR_SET_TAGGED_ADDR_CTRL API from arm64. Unlike arm64 TBI, userspace pointer masking is not enabled by default on RISC-V. Additionally, the tag width (referred to as PMLEN) is variable, so userspace needs to ask the kernel for a specific tag width, which is interpreted as a lower bound on the number of tag bits.
[...]
Here is the summary with links: - [v5,01/10] dt-bindings: riscv: Add pointer masking ISA extensions https://git.kernel.org/riscv/c/8946ad26c0e2 - [v5,02/10] riscv: Add ISA extension parsing for pointer masking https://git.kernel.org/riscv/c/12749546293e - [v5,03/10] riscv: Add CSR definitions for pointer masking https://git.kernel.org/riscv/c/1edd6226877b - [v5,04/10] riscv: Add support for userspace pointer masking https://git.kernel.org/riscv/c/871aba681a0d - [v5,05/10] riscv: Add support for the tagged address ABI https://git.kernel.org/riscv/c/c4d16116bd11 - [v5,06/10] riscv: Allow ptrace control of the tagged address ABI https://git.kernel.org/riscv/c/cebce87fb04e - [v5,07/10] riscv: selftests: Add a pointer masking test https://git.kernel.org/riscv/c/5e9f1ee1c523 - [v5,08/10] riscv: hwprobe: Export the Supm ISA extension https://git.kernel.org/riscv/c/d250050aae4f - [v5,09/10] RISC-V: KVM: Allow Smnpm and Ssnpm extensions for guests https://git.kernel.org/riscv/c/e27f468bcf14 - [v5,10/10] KVM: riscv: selftests: Add Smnpm and Ssnpm to get-reg-list test https://git.kernel.org/riscv/c/814779461d84
You are awesome, thank you!