linux-kernel - [PATCH -fixes v2 0/3] Fixes for dtb mapping

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Message-Id: <20230329081932.79831-1-alexghiti@rivosinc.com>
Date:   Wed, 29 Mar 2023 10:19:29 +0200
From:   Alexandre Ghiti <alexghiti@...osinc.com>
To:     Jonathan Corbet <corbet@....net>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Conor Dooley <conor.dooley@...rochip.com>,
        linux-doc@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Alexandre Ghiti <alexghiti@...osinc.com>
Subject: [PATCH -fixes v2 0/3] Fixes for dtb mapping

We used to map the dtb differently between early_pg_dir and
swapper_pg_dir which caused issues when we referenced addresses from
the early mapping with swapper_pg_dir (reserved_mem): move the dtb mapping
to the fixmap region in patch 1, which allows to simplify dtb handling in
patch 2.

base-commit-tag: v6.3-rc3

Changes in v2:
  * No functional changes!
  * Add RB/TB from Conor in patch 1
  * Split patch 2 into 2 separate patches, as suggested by Conor
  * Fix the changelog, add Fixes tag, as suggested by Conor

Alexandre Ghiti (3):
  riscv: Move early dtb mapping into the fixmap region
  riscv: Do not set initial_boot_params to the linear address of the dtb
  riscv: No need to relocate the dtb as it lies in the fixmap region

 Documentation/riscv/vm-layout.rst |  6 +--
 arch/riscv/include/asm/fixmap.h   |  8 +++
 arch/riscv/include/asm/pgtable.h  |  8 ++-
 arch/riscv/kernel/setup.c         |  6 +--
 arch/riscv/mm/init.c              | 82 ++++++++++++++-----------------
 5 files changed, 54 insertions(+), 56 deletions(-)

-- 
2.37.2