[PATCH v4 0/2] RISC-V: KVM: Fix hugepage mapping handling during dirty logging

wang.yechao255 at zte.com.cn wang.yechao255 at zte.com.cn
Mon Mar 30 01:08:17 PDT 2026


From: Wang Yechao <wang.yechao255 at zte.com.cn>

This series fixes an issue where dirty logging fails to work correctly
with huge pages.

v3 -> v4:
  - Squash PATCH2 into PATCH3, and adjust according to Anup's comments.
  - Link to v3:
  https://lore.kernel.org/linux-riscv/20260316141234007qSAOsesu2cSQsj-LA-qq3@zte.com.cn/T/#t

v2 -> v3:
  - patch01: Add reference to the specific commit being fixed
  - patch02: Fill the page table entry before replacing the ptep value
  - patch03: Add handling for dirty logging disable to avoid memory leak in gstage page tables
  - Link to v2:
  https://lore.kernel.org/linux-riscv/20260304172139131ChDubMSpGDUB03lY4UCbK@zte.com.cn/T/#t

v1 -> v2:
  - fix the lost write protection on huge pages
  - split huge pages before handling the write protection fault.

  - Link to v1:
  https://lore.kernel.org/linux-riscv/20260226172245358qVZavIykLL2QC0KoqTO-I@zte.com.cn/T/#u

Wang Yechao (2):
  RISC-V: KVM: Fix lost write protection on huge pages during dirty logging
  RISC-V: KVM: Split huge pages during fault handling for dirty logging

 arch/riscv/include/asm/kvm_gstage.h |   4 +
 arch/riscv/kvm/gstage.c             | 133 +++++++++++++++++++++++++++-
 2 files changed, 133 insertions(+), 4 deletions(-)

-- 
2.47.3



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