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From:   Yanan Wang <wangyanan55@huawei.com>
To:     Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>,
        "Quentin Perret" <qperret@google.com>,
        Alexandru Elisei <alexandru.elisei@arm.com>,
        <kvmarm@lists.cs.columbia.edu>,
        <linux-arm-kernel@lists.infradead.org>, <kvm@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>
CC:     Catalin Marinas <catalin.marinas@arm.com>,
        James Morse <james.morse@arm.com>,
        Julien Thierry <julien.thierry.kdev@gmail.com>,
        "Suzuki K Poulose" <suzuki.poulose@arm.com>,
        Gavin Shan <gshan@redhat.com>, <wanghaibin.wang@huawei.com>,
        <zhukeqian1@huawei.com>, <yuzenghui@huawei.com>,
        Yanan Wang <wangyanan55@huawei.com>
Subject: [PATCH v6 2/4] KVM: arm64: Introduce mm_ops member for structure stage2_attr_data
Date:   Wed, 16 Jun 2021 17:51:58 +0800
Message-ID: <20210616095200.38008-3-wangyanan55@huawei.com>
In-Reply-To: <20210616095200.38008-1-wangyanan55@huawei.com>
References: <20210616095200.38008-1-wangyanan55@huawei.com>
MIME-Version: 1.0
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Precedence: bulk

Also add a mm_ops member for structure stage2_attr_data, since we
will move I-cache maintenance for guest stage-2 to the permission
path and as a result will need mm_ops for some callbacks.

Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
---
 arch/arm64/kvm/hyp/pgtable.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c
index c37c1dc4feaf..d99789432b05 100644
--- a/arch/arm64/kvm/hyp/pgtable.c
+++ b/arch/arm64/kvm/hyp/pgtable.c
@@ -861,10 +861,11 @@ int kvm_pgtable_stage2_unmap(struct kvm_pgtable *pgt, u64 addr, u64 size)
 }
 
 struct stage2_attr_data {
-	kvm_pte_t	attr_set;
-	kvm_pte_t	attr_clr;
-	kvm_pte_t	pte;
-	u32		level;
+	kvm_pte_t			attr_set;
+	kvm_pte_t			attr_clr;
+	kvm_pte_t			pte;
+	u32				level;
+	struct kvm_pgtable_mm_ops	*mm_ops;
 };
 
 static int stage2_attr_walker(u64 addr, u64 end, u32 level, kvm_pte_t *ptep,
@@ -903,6 +904,7 @@ static int stage2_update_leaf_attrs(struct kvm_pgtable *pgt, u64 addr,
 	struct stage2_attr_data data = {
 		.attr_set	= attr_set & attr_mask,
 		.attr_clr	= attr_clr & attr_mask,
+		.mm_ops		= pgt->mm_ops,
 	};
 	struct kvm_pgtable_walker walker = {
 		.cb		= stage2_attr_walker,
-- 
2.23.0