linux-kernel - [PATCH] RISC-V: KVM: Use find_vma_intersection() to search for intersecting VMAs

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Message-Id: <230d6c8c8b8dd83081fcfd8d83a4d17c8245fa2f.1731552790.git.zhouquan@iscas.ac.cn>
Date: Tue, 17 Jun 2025 21:04:23 +0800
From: zhouquan@...as.ac.cn
To: anup@...infault.org,
	ajones@...tanamicro.com,
	atishp@...shpatra.org,
	paul.walmsley@...ive.com,
	palmer@...belt.com
Cc: linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	kvm@...r.kernel.org,
	kvm-riscv@...ts.infradead.org,
	Quan Zhou <zhouquan@...as.ac.cn>
Subject: [PATCH] RISC-V: KVM: Use find_vma_intersection() to search for intersecting VMAs

From: Quan Zhou <zhouquan@...as.ac.cn>

There is already a helper function find_vma_intersection() in KVM
for searching intersecting VMAs, use it directly.

Signed-off-by: Quan Zhou <zhouquan@...as.ac.cn>
---
 arch/riscv/kvm/mmu.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c
index b63650f9b966..3452a8b77af3 100644
--- a/arch/riscv/kvm/mmu.c
+++ b/arch/riscv/kvm/mmu.c
@@ -487,10 +487,11 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
 	 *     +--------------------------------------------+
 	 */
 	do {
-		struct vm_area_struct *vma = find_vma(current->mm, hva);
+		struct vm_area_struct *vma;
 		hva_t vm_start, vm_end;
 
-		if (!vma || vma->vm_start >= reg_end)
+		vma = find_vma_intersection(current->mm, hva, reg_end);
+		if (!vma)
 			break;
 
 		/*
-- 
2.34.1