linux-kernel - [PATCH 6.6.y 0/2] riscv: mm: Backport of mmap hint address fixes

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Message-Id: <20251008-riscv-mmap-addr-space-6-6-v1-0-9f47574a520f@iscas.ac.cn>
Date: Wed, 08 Oct 2025 15:50:15 +0800
From: Vivian Wang <wangruikang@...as.ac.cn>
To: stable@...r.kernel.org, Paul Walmsley <pjw@...nel.org>, 
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
 Paul Walmsley <paul.walmsley@...ive.com>
Cc: linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Guo Ren <guoren@...nel.org>, Charlie Jenkins <charlie@...osinc.com>, 
 Yangyu Chen <cyy@...self.name>, Han Gao <rabenda.cn@...il.com>, 
 Icenowy Zheng <uwu@...nowy.me>, Inochi Amaoto <inochiama@...il.com>, 
 Vivian Wang <wangruikang@...as.ac.cn>, Yao Zi <ziyao@...root.org>, 
 Palmer Dabbelt <palmer@...osinc.com>
Subject: [PATCH 6.6.y 0/2] riscv: mm: Backport of mmap hint address fixes

Backport of the two riscv mmap patches from master. In effect, these two
patches removes arch_get_mmap_{base,end} for riscv.

Guo Ren: Please take a look. Patch 1 has a slightly non-trivial conflict
with your commit 97b7ac69be2e ("riscv: mm: Fixup compat
arch_get_mmap_end"), which changed STACK_TOP_MAX from TASK_SIZE_64 to
TASK_SIZE when CONFIG_64BIT=y. This shouldn't be a problem, but, well,
just to be safe.

---
Charlie Jenkins (2):
      riscv: mm: Use hint address in mmap if available
      riscv: mm: Do not restrict mmap address based on hint

 arch/riscv/include/asm/processor.h | 33 +++++----------------------------
 1 file changed, 5 insertions(+), 28 deletions(-)
---
base-commit: 60a9e718726fa7019ae00916e4b1c52498da5b60
change-id: 20250917-riscv-mmap-addr-space-6-6-15e7db6b5db6

Best regards,
-- 
Vivian "dramforever" Wang