RISC-V: KVM: Add the eager_page_split module parameter

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Add an eager_page_split module parameter for RISC-V KVM, following
the same approach as on x86. This parameter controls whether eager
page splitting is enabled. The default value is on.

When eager page splitting is enabled, KVM proactively splits large
pages (huge pages) into smaller pages when needed for dirty logging
or other operations. Disabling it can be beneficial for VM workloads
that rarely perform writes, or that only write to a small region of
memory, as it allows huge pages to remain intact for read accesses.

Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260731091215.1549430-6-wang.yechao255@zte.com.cn
Signed-off-by: Anup Patel <anup@brainfault.org>

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Wang Yechao 2026-07-31 17:12:10 +08:00 • committed by Anup Patel

parent c67573b37c

commit 98a1e65ca4

2 changed files with 15 additions and 5 deletions

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7

Documentation/admin-guide/kernel-parameters.txt

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13

arch/riscv/kvm/mmu.c

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