[PATCH v4 4/5] RISC-V: KVM: Split huge pages during KVM_CLEAR_DIRTY_LOG

[Wang Yechao]

Split huge pages on the range specified using KVM_CLEAR_DIRTY_LOG.
And do not split when enabling dirty logging if
KVM_DIRTY_LOG_INITIALLY_SET is set.

Signed-off-by: Wang Yechao <wang.yechao255 at zte.com.cn>
Reviewed-by: Anup Patel <anup at brainfault.org>
---
 arch/riscv/kvm/mmu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c
index 056c0abe278af..29a7ac023d4db 100644
--- a/arch/riscv/kvm/mmu.c
+++ b/arch/riscv/kvm/mmu.c
@@ -166,6 +166,9 @@ void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm,
 	kvm_riscv_gstage_init(&gstage, kvm);
 
 	kvm_riscv_gstage_wp_range(&gstage, start, end);
+
+	if (kvm_dirty_log_manual_protect_and_init_set(kvm))
+		mmu_split_huge_pages(&gstage, start, end);
 }
 
 void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot)
-- 
2.43.5