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Date: Wed, 10 Nov 2021 14:29:57 -0800
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>,
Peter Shier <pshier@...gle.com>,
David Matlack <dmatlack@...gle.com>,
Mingwei Zhang <mizhang@...gle.com>,
Yulei Zhang <yulei.kernel@...il.com>,
Wanpeng Li <kernellwp@...il.com>,
Xiao Guangrong <xiaoguangrong.eric@...il.com>,
Kai Huang <kai.huang@...el.com>,
Keqian Zhu <zhukeqian1@...wei.com>,
David Hildenbrand <david@...hat.com>,
Ben Gardon <bgardon@...gle.com>
Subject: [RFC 06/19] KVM: x86/mmu: Introduce vcpu_make_spte
Add a wrapper around make_spte which conveys the vCPU-specific context of
the function. This will facilitate factoring out all uses of the vCPU
pointer from make_spte in subsequent commits.
No functional change intended.
Signed-off-by: Ben Gardon <bgardon@...gle.com>
---
arch/x86/kvm/mmu/mmu.c | 2 +-
arch/x86/kvm/mmu/paging_tmpl.h | 6 +++---
arch/x86/kvm/mmu/spte.c | 17 +++++++++++++----
arch/x86/kvm/mmu/spte.h | 12 ++++++++----
arch/x86/kvm/mmu/tdp_mmu.c | 7 ++++---
5 files changed, 29 insertions(+), 15 deletions(-)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index baa94acab516..2ada6dee920a 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -2723,7 +2723,7 @@ static int mmu_set_spte(struct kvm_vcpu *vcpu, struct kvm_memory_slot *slot,
was_rmapped = 1;
}
- wrprot = make_spte(vcpu, sp, slot, pte_access, gfn, pfn, *sptep, prefetch,
+ wrprot = vcpu_make_spte(vcpu, sp, slot, pte_access, gfn, pfn, *sptep, prefetch,
true, host_writable, &spte);
if (*sptep == spte) {
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index f87d36898c44..edb8ebd1a775 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -1129,9 +1129,9 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
spte = *sptep;
host_writable = spte & shadow_host_writable_mask;
slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);
- make_spte(vcpu, sp, slot, pte_access, gfn,
- spte_to_pfn(spte), spte, true, false,
- host_writable, &spte);
+ vcpu_make_spte(vcpu, sp, slot, pte_access, gfn,
+ spte_to_pfn(spte), spte, true, false,
+ host_writable, &spte);
flush |= mmu_spte_update(sptep, spte);
}
diff --git a/arch/x86/kvm/mmu/spte.c b/arch/x86/kvm/mmu/spte.c
index 0c76c45fdb68..04d26e913941 100644
--- a/arch/x86/kvm/mmu/spte.c
+++ b/arch/x86/kvm/mmu/spte.c
@@ -90,10 +90,9 @@ static bool kvm_is_mmio_pfn(kvm_pfn_t pfn)
}
bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
- 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)
+ 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;
@@ -191,6 +190,16 @@ bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
return wrprot;
}
+bool vcpu_make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
+ 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);
+
+}
+
u64 make_nonleaf_spte(u64 *child_pt, bool ad_disabled)
{
u64 spte = SPTE_MMU_PRESENT_MASK;
diff --git a/arch/x86/kvm/mmu/spte.h b/arch/x86/kvm/mmu/spte.h
index cc432f9a966b..14f18082d505 100644
--- a/arch/x86/kvm/mmu/spte.h
+++ b/arch/x86/kvm/mmu/spte.h
@@ -330,10 +330,14 @@ static inline u64 get_mmio_spte_generation(u64 spte)
}
bool make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
- 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);
+ 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 vcpu_make_spte(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
+ 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);
u64 make_nonleaf_spte(u64 *child_pt, bool ad_disabled);
u64 make_mmio_spte(struct kvm_vcpu *vcpu, u64 gfn, unsigned int access);
u64 mark_spte_for_access_track(u64 spte);
diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index 1ece645e737f..836eadd4e73a 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -980,9 +980,10 @@ static int tdp_mmu_map_handle_target_level(struct kvm_vcpu *vcpu,
if (unlikely(!fault->slot))
new_spte = make_mmio_spte(vcpu, iter->gfn, ACC_ALL);
else
- wrprot = make_spte(vcpu, sp, fault->slot, ACC_ALL, iter->gfn,
- fault->pfn, iter->old_spte, fault->prefetch, true,
- fault->map_writable, &new_spte);
+ wrprot = vcpu_make_spte(vcpu, sp, fault->slot, ACC_ALL,
+ iter->gfn, fault->pfn, iter->old_spte,
+ fault->prefetch, true,
+ fault->map_writable, &new_spte);
if (new_spte == iter->old_spte)
ret = RET_PF_SPURIOUS;
--
2.34.0.rc0.344.g81b53c2807-goog
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