From: Palmer Dabbelt <palmer@rivosinc.com>
Date: Wed, 22 May 2024 16:15:12 +0000 (-0700)
Subject: Merge patch series "riscv: fix debug_pagealloc"
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=855ad0f7a167304936ce42e9d0737bbecfa8b6de;p=linux.git

Merge patch series "riscv: fix debug_pagealloc"

Nam Cao <namcao@linutronix.de> says:

The debug_pagealloc feature is not functional on RISCV. With this feature
enabled (CONFIG_DEBUG_PAGEALLOC=y and debug_pagealloc=on), kernel crashes
early during boot.

QEMU command that can reproduce this problem:
   qemu-system-riscv64 -machine virt \
   -kernel Image \
   -append "console=ttyS0 root=/dev/vda debug_pagealloc=on" \
   -nographic \
   -drive "file=root.img,format=raw,id=hd0" \
   -device virtio-blk-device,drive=hd0 \
   -m 4G \

This series makes debug_pagealloc functional.

* b4-shazam-merge:
  riscv: rewrite __kernel_map_pages() to fix sleeping in invalid context
  riscv: force PAGE_SIZE linear mapping if debug_pagealloc is enabled

Link: https://lore.kernel.org/r/cover.1715750938.git.namcao@linutronix.de
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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855ad0f7a167304936ce42e9d0737bbecfa8b6de