[PATCH v4 07/18] KVM: x86/tdp_mmu: Take struct kvm in iter loops

[Rick Edgecombe <rick.p.edgecombe@intel.com>]

From: Isaku Yamahata <isaku.yamahata@intel.com>

Add a struct kvm argument to the TDP MMU iterators.

Future changes will want to change how the iterator behaves based on a
member of struct kvm. Change the signature and callers of the iterator
loop helpers in a separate patch to make the future one easier to review.

Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
---
v3:
 - Split from "KVM: x86/mmu: Support GFN direct mask" (Paolo)
---
 arch/x86/kvm/mmu/tdp_iter.h |  6 +++---
 arch/x86/kvm/mmu/tdp_mmu.c  | 36 ++++++++++++++++++------------------
 2 files changed, 21 insertions(+), 21 deletions(-)

diff --git a/arch/x86/kvm/mmu/tdp_iter.h b/arch/x86/kvm/mmu/tdp_iter.h
index 2880fd392e0c..d8f2884e3c66 100644
--- a/arch/x86/kvm/mmu/tdp_iter.h
+++ b/arch/x86/kvm/mmu/tdp_iter.h
@@ -122,13 +122,13 @@ struct tdp_iter {
  * Iterates over every SPTE mapping the GFN range [start, end) in a
  * preorder traversal.
  */
-#define for_each_tdp_pte_min_level(iter, root, min_level, start, end) \
+#define for_each_tdp_pte_min_level(iter, kvm, root, min_level, start, end)		  \
 	for (tdp_iter_start(&iter, root, min_level, start); \
 	     iter.valid && iter.gfn < end;		     \
 	     tdp_iter_next(&iter))
 
-#define for_each_tdp_pte(iter, root, start, end) \
-	for_each_tdp_pte_min_level(iter, root, PG_LEVEL_4K, start, end)
+#define for_each_tdp_pte(iter, kvm, root, start, end)				\
+	for_each_tdp_pte_min_level(iter, kvm, root, PG_LEVEL_4K, start, end)
 
 tdp_ptep_t spte_to_child_pt(u64 pte, int level);
 
diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index f4df20b91817..89b8a8eed116 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -675,18 +675,18 @@ static inline void tdp_mmu_iter_set_spte(struct kvm *kvm, struct tdp_iter *iter,
 					  iter->gfn, iter->level);
 }
 
-#define tdp_root_for_each_pte(_iter, _root, _start, _end) \
-	for_each_tdp_pte(_iter, _root, _start, _end)
+#define tdp_root_for_each_pte(_iter, _kvm, _root, _start, _end)	\
+	for_each_tdp_pte(_iter, _kvm, _root, _start, _end)
 
-#define tdp_root_for_each_leaf_pte(_iter, _root, _start, _end)	\
-	tdp_root_for_each_pte(_iter, _root, _start, _end)		\
+#define tdp_root_for_each_leaf_pte(_iter, _kvm, _root, _start, _end)	\
+	tdp_root_for_each_pte(_iter, _kvm, _root, _start, _end)		\
 		if (!is_shadow_present_pte(_iter.old_spte) ||		\
 		    !is_last_spte(_iter.old_spte, _iter.level))		\
 			continue;					\
 		else
 
-#define tdp_mmu_for_each_pte(_iter, _mmu, _start, _end)		\
-	for_each_tdp_pte(_iter, root_to_sp(_mmu->root.hpa), _start, _end)
+#define tdp_mmu_for_each_pte(_iter, _kvm, _mmu, _start, _end)		\
+	for_each_tdp_pte(_iter, _kvm, root_to_sp(_mmu->root.hpa), _start, _end)
 
 /*
  * Yield if the MMU lock is contended or this thread needs to return control
@@ -752,7 +752,7 @@ static void __tdp_mmu_zap_root(struct kvm *kvm, struct kvm_mmu_page *root,
 	gfn_t end = tdp_mmu_max_gfn_exclusive();
 	gfn_t start = 0;
 
-	for_each_tdp_pte_min_level(iter, root, zap_level, start, end) {
+	for_each_tdp_pte_min_level(iter, kvm, root, zap_level, start, end) {
 retry:
 		if (tdp_mmu_iter_cond_resched(kvm, &iter, false, shared))
 			continue;
@@ -856,7 +856,7 @@ static bool tdp_mmu_zap_leafs(struct kvm *kvm, struct kvm_mmu_page *root,
 
 	rcu_read_lock();
 
-	for_each_tdp_pte_min_level(iter, root, PG_LEVEL_4K, start, end) {
+	for_each_tdp_pte_min_level(iter, kvm, root, PG_LEVEL_4K, start, end) {
 		if (can_yield &&
 		    tdp_mmu_iter_cond_resched(kvm, &iter, flush, false)) {
 			flush = false;
@@ -1123,7 +1123,7 @@ int kvm_tdp_mmu_map(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault)
 
 	rcu_read_lock();
 
-	tdp_mmu_for_each_pte(iter, mmu, fault->gfn, fault->gfn + 1) {
+	tdp_mmu_for_each_pte(iter, kvm, mmu, fault->gfn, fault->gfn + 1) {
 		int r;
 
 		if (fault->nx_huge_page_workaround_enabled)
@@ -1221,7 +1221,7 @@ static __always_inline bool kvm_tdp_mmu_handle_gfn(struct kvm *kvm,
 	for_each_tdp_mmu_root(kvm, root, range->slot->as_id) {
 		rcu_read_lock();
 
-		tdp_root_for_each_leaf_pte(iter, root, range->start, range->end)
+		tdp_root_for_each_leaf_pte(iter, kvm, root, range->start, range->end)
 			ret |= handler(kvm, &iter, range);
 
 		rcu_read_unlock();
@@ -1304,7 +1304,7 @@ static bool wrprot_gfn_range(struct kvm *kvm, struct kvm_mmu_page *root,
 
 	BUG_ON(min_level > KVM_MAX_HUGEPAGE_LEVEL);
 
-	for_each_tdp_pte_min_level(iter, root, min_level, start, end) {
+	for_each_tdp_pte_min_level(iter, kvm, root, min_level, start, end) {
 retry:
 		if (tdp_mmu_iter_cond_resched(kvm, &iter, false, true))
 			continue;
@@ -1467,7 +1467,7 @@ static int tdp_mmu_split_huge_pages_root(struct kvm *kvm,
 	 * level above the target level (e.g. splitting a 1GB to 512 2MB pages,
 	 * and then splitting each of those to 512 4KB pages).
 	 */
-	for_each_tdp_pte_min_level(iter, root, target_level + 1, start, end) {
+	for_each_tdp_pte_min_level(iter, kvm, root, target_level + 1, start, end) {
 retry:
 		if (tdp_mmu_iter_cond_resched(kvm, &iter, false, shared))
 			continue;
@@ -1552,7 +1552,7 @@ static bool clear_dirty_gfn_range(struct kvm *kvm, struct kvm_mmu_page *root,
 
 	rcu_read_lock();
 
-	tdp_root_for_each_pte(iter, root, start, end) {
+	tdp_root_for_each_pte(iter, kvm, root, start, end) {
 retry:
 		if (!is_shadow_present_pte(iter.old_spte) ||
 		    !is_last_spte(iter.old_spte, iter.level))
@@ -1607,7 +1607,7 @@ static void clear_dirty_pt_masked(struct kvm *kvm, struct kvm_mmu_page *root,
 
 	rcu_read_lock();
 
-	tdp_root_for_each_leaf_pte(iter, root, gfn + __ffs(mask),
+	tdp_root_for_each_leaf_pte(iter, kvm, root, gfn + __ffs(mask),
 				    gfn + BITS_PER_LONG) {
 		if (!mask)
 			break;
@@ -1664,7 +1664,7 @@ static void zap_collapsible_spte_range(struct kvm *kvm,
 
 	rcu_read_lock();
 
-	for_each_tdp_pte_min_level(iter, root, PG_LEVEL_2M, start, end) {
+	for_each_tdp_pte_min_level(iter, kvm, root, PG_LEVEL_2M, start, end) {
 retry:
 		if (tdp_mmu_iter_cond_resched(kvm, &iter, false, true))
 			continue;
@@ -1734,7 +1734,7 @@ static bool write_protect_gfn(struct kvm *kvm, struct kvm_mmu_page *root,
 
 	rcu_read_lock();
 
-	for_each_tdp_pte_min_level(iter, root, min_level, gfn, gfn + 1) {
+	for_each_tdp_pte_min_level(iter, kvm, root, min_level, gfn, gfn + 1) {
 		if (!is_shadow_present_pte(iter.old_spte) ||
 		    !is_last_spte(iter.old_spte, iter.level))
 			continue;
@@ -1789,7 +1789,7 @@ int kvm_tdp_mmu_get_walk(struct kvm_vcpu *vcpu, u64 addr, u64 *sptes,
 
 	*root_level = vcpu->arch.mmu->root_role.level;
 
-	tdp_mmu_for_each_pte(iter, mmu, gfn, gfn + 1) {
+	tdp_mmu_for_each_pte(iter, vcpu->kvm, mmu, gfn, gfn + 1) {
 		leaf = iter.level;
 		sptes[leaf] = iter.old_spte;
 	}
@@ -1815,7 +1815,7 @@ u64 *kvm_tdp_mmu_fast_pf_get_last_sptep(struct kvm_vcpu *vcpu, gfn_t gfn,
 	struct kvm_mmu *mmu = vcpu->arch.mmu;
 	tdp_ptep_t sptep = NULL;
 
-	tdp_mmu_for_each_pte(iter, mmu, gfn, gfn + 1) {
+	tdp_mmu_for_each_pte(iter, vcpu->kvm, mmu, gfn, gfn + 1) {
 		*spte = iter.old_spte;
 		sptep = iter.sptep;
 	}
-- 
2.34.1