RISC-V: KVM: Remove redundant TLB flush operations

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The function kvm_arch_mmu_enable_log_dirty_pt_masked() is invoked from
two distinct call paths:

kvm_clear_dirty_log_protect()
  kvm_arch_mmu_enable_log_dirty_pt_masked()

kvm_vm_ioctl_reset_dirty_pages()
  kvm_dirty_ring_reset()
    kvm_reset_dirty_gfn()
        kvm_arch_mmu_enable_log_dirty_pt_masked()

In both scenarios, the caller already performs a remote TLB flush after
dirty logging is enabled, so the TLB flush inside
kvm_arch_mmu_enable_log_dirty_pt_masked() is unnecessary. Remove it.

Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260731091215.1549430-4-wang.yechao255@zte.com.cn
Signed-off-by: Anup Patel <anup@brainfault.org>

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

parent da870fdafa

commit 6854a0f4d9

1 changed files with 6 additions and 5 deletions

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arch/riscv/kvm/mmu.c

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