linux-kernel - [PATCH v3 0/4] Add PMEM support for RISC-V

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Date:   Wed, 19 Oct 2022 17:46:18 +0530
From:   Anup Patel <apatel@...tanamicro.com>
To:     Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>
Cc:     Atish Patra <atishp@...shpatra.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Anup Patel <anup@...infault.org>,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Anup Patel <apatel@...tanamicro.com>
Subject: [PATCH v3 0/4] Add PMEM support for RISC-V

The Linux NVDIMM PEM drivers require arch support to map and access the
persistent memory device. This series adds RISC-V PMEM support using
recently added Svpbmt and Zicbom support.

First two patches are fixes and remaining two patches add the required
PMEM support for Linux RISC-V.

These patches can also be found in riscv_pmem_v3 branch at:
https://github.com/avpatel/linux.git

Changes since v2:
 - Rebased on Linux-6.1-rc1
 - Replaced PATCH1 with the patch proposed by Drew

Changes since v1:
 - Fix error reported by test bot
   https://lore.kernel.org/all/202208272028.IwrNZ0Ur-lkp@intel.com/

Andrew Jones (1):
  RISC-V: Fix compilation without RISCV_ISA_ZICBOM

Anup Patel (3):
  RISC-V: Fix ioremap_cache() and ioremap_wc() for systems with Svpbmt
  RISC-V: Implement arch specific PMEM APIs
  RISC-V: Enable PMEM drivers

 arch/riscv/Kconfig               |  1 +
 arch/riscv/configs/defconfig     |  1 +
 arch/riscv/include/asm/io.h      | 10 ++++++++
 arch/riscv/include/asm/pgtable.h |  2 ++
 arch/riscv/mm/Makefile           |  1 +
 arch/riscv/mm/cacheflush.c       | 41 ++++++++++++++++++++++++++++++++
 arch/riscv/mm/dma-noncoherent.c  | 41 --------------------------------
 arch/riscv/mm/pmem.c             | 21 ++++++++++++++++
 8 files changed, 77 insertions(+), 41 deletions(-)
 create mode 100644 arch/riscv/mm/pmem.c

-- 
2.34.1