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 1/4] KVM: arm64: Introduce cache maintenance callbacks for guest stage-2
Date: Wed, 16 Jun 2021 17:51:57 +0800 [thread overview]
Message-ID: <20210616095200.38008-2-wangyanan55@huawei.com> (raw)
In-Reply-To: <20210616095200.38008-1-wangyanan55@huawei.com>
To prepare for performing guest CMOs in the fault handlers in pgtable.c,
introduce two cache maintenance callbacks in struct kvm_pgtable_mm_ops.
The new callbacks are specific for guest stage-2, so they will only be
initialized in 'struct kvm_pgtable_mm_ops kvm_s2_mm_ops'.
Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
---
arch/arm64/include/asm/kvm_pgtable.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h
index c3674c47d48c..302eca32e0af 100644
--- a/arch/arm64/include/asm/kvm_pgtable.h
+++ b/arch/arm64/include/asm/kvm_pgtable.h
@@ -44,6 +44,11 @@ typedef u64 kvm_pte_t;
* in the current context.
* @virt_to_phys: Convert a virtual address mapped in the current context
* into a physical address.
+ * @flush_dcache: Clean data cache for a guest page address range before
+ * creating the corresponding stage-2 mapping.
+ * @flush_icache: Invalidate instruction cache for a guest page address
+ * range before creating or updating the corresponding
+ * stage-2 mapping.
*/
struct kvm_pgtable_mm_ops {
void* (*zalloc_page)(void *arg);
@@ -54,6 +59,8 @@ struct kvm_pgtable_mm_ops {
int (*page_count)(void *addr);
void* (*phys_to_virt)(phys_addr_t phys);
phys_addr_t (*virt_to_phys)(void *addr);
+ void (*flush_dcache)(void *addr, size_t size);
+ void (*flush_icache)(void *addr, size_t size);
};
/**
--
2.23.0
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next prev parent reply other threads:[~2021-06-16 9:54 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-16 9:51 [PATCH v6 0/4] KVM: arm64: Improve efficiency of stage2 page table Yanan Wang
2021-06-16 9:51 ` Yanan Wang [this message]
2021-06-16 13:21 ` [PATCH v6 1/4] KVM: arm64: Introduce cache maintenance callbacks for guest stage-2 Marc Zyngier
2021-06-17 6:48 ` wangyanan (Y)
2021-06-17 8:03 ` Marc Zyngier
2021-06-17 8:22 ` wangyanan (Y)
2021-06-17 8:44 ` Marc Zyngier
2021-06-17 9:43 ` wangyanan (Y)
2021-06-17 10:43 ` Marc Zyngier
2021-06-18 8:50 ` Fuad Tabba
2021-06-16 9:51 ` [PATCH v6 2/4] KVM: arm64: Introduce mm_ops member for structure stage2_attr_data Yanan Wang
2021-06-16 9:51 ` [PATCH v6 3/4] KVM: arm64: Tweak parameters of guest cache maintenance functions Yanan Wang
2021-06-16 9:52 ` [PATCH v6 4/4] KVM: arm64: Move guest CMOs to the fault handlers Yanan Wang
2021-06-17 8:00 ` Marc Zyngier
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