linux-kernel - [PATCH v2 1/9] KVM: x86/mmu: Move implementation of make

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Date:   Mon, 21 Mar 2022 15:43:50 -0700
From:   Ben Gardon <bgardon@...gle.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     Paolo Bonzini <pbonzini@...hat.com>, Peter Xu <peterx@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        David Matlack <dmatlack@...gle.com>,
        Jim Mattson <jmattson@...gle.com>,
        David Dunn <daviddunn@...gle.com>,
        Jing Zhang <jingzhangos@...gle.com>,
        Junaid Shahid <junaids@...gle.com>,
        Ben Gardon <bgardon@...gle.com>
Subject: [PATCH v2 1/9] KVM: x86/mmu: Move implementation of make_spte to a helper

Move the implementation of make_spte to a helper function. This will
facilitate factoring out all uses of the vCPU pointer from the helper
in subsequent commits.

No functional change intended.

Signed-off-by: Ben Gardon <bgardon@...gle.com>
---
 arch/x86/kvm/mmu/spte.c | 20 +++++++++++++++-----
 arch/x86/kvm/mmu/spte.h |  4 ++++
 2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kvm/mmu/spte.c b/arch/x86/kvm/mmu/spte.c
index 4739b53c9734..d3da0d3d41cb 100644
--- a/arch/x86/kvm/mmu/spte.c
+++ b/arch/x86/kvm/mmu/spte.c
@@ -90,11 +90,10 @@ static bool kvm_is_mmio_pfn(kvm_pfn_t pfn)
 				     E820_TYPE_RAM);
 }
 
-bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
-	       const struct kvm_memory_slot *slot,
-	       unsigned int pte_access, gfn_t gfn, kvm_pfn_t pfn,
-	       u64 old_spte, bool prefetch, bool can_unsync,
-	       bool host_writable, u64 *new_spte)
+bool __make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
+		 const struct kvm_memory_slot *slot, unsigned int pte_access,
+		 gfn_t gfn, kvm_pfn_t pfn, u64 old_spte, bool prefetch,
+		 bool can_unsync, bool host_writable, u64 *new_spte)
 {
 	int level = sp->role.level;
 	u64 spte = SPTE_MMU_PRESENT_MASK;
@@ -192,6 +191,17 @@ bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
 	return wrprot;
 }
 
+bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
+	       const struct kvm_memory_slot *slot,
+	       unsigned int pte_access, gfn_t gfn, kvm_pfn_t pfn,
+	       u64 old_spte, bool prefetch, bool can_unsync,
+	       bool host_writable, u64 *new_spte)
+{
+	return __make_spte(vcpu, sp, slot, pte_access, gfn, pfn, old_spte,
+			   prefetch, can_unsync, host_writable, new_spte);
+
+}
+
 static u64 make_spte_executable(u64 spte)
 {
 	bool is_access_track = is_access_track_spte(spte);
diff --git a/arch/x86/kvm/mmu/spte.h b/arch/x86/kvm/mmu/spte.h
index 73f12615416f..3fae3c3124f7 100644
--- a/arch/x86/kvm/mmu/spte.h
+++ b/arch/x86/kvm/mmu/spte.h
@@ -410,6 +410,10 @@ static inline u64 get_mmio_spte_generation(u64 spte)
 	return gen;
 }
 
+bool __make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
+		 const struct kvm_memory_slot *slot, unsigned int pte_access,
+		 gfn_t gfn, kvm_pfn_t pfn, u64 old_spte, bool prefetch,
+		 bool can_unsync, bool host_writable, u64 *new_spte);
 bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
 	       const struct kvm_memory_slot *slot,
 	       unsigned int pte_access, gfn_t gfn, kvm_pfn_t pfn,
-- 
2.35.1.894.gb6a874cedc-goog