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From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Marc Zyngier <maz@kernel.org>, Paul Mackerras <paulus@ozlabs.org>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	Janosch Frank <frankja@linux.ibm.com>,
	Paolo Bonzini <pbonzini@redhat.com>
Cc: Wanpeng Li <wanpengli@tencent.com>,
	kvm@vger.kernel.org, David Hildenbrand <david@redhat.com>,
	linux-mips@vger.kernel.org, Ben Gardon <bgardon@google.com>,
	Claudio Imbrenda <imbrenda@linux.ibm.com>,
	kvmarm@lists.cs.columbia.edu, Joerg Roedel <joro@8bytes.org>,
	Julien Thierry <julien.thierry.kdev@gmail.com>,
	Junaid Shahid <junaids@google.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	kvm-ppc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	Jim Mattson <jmattson@google.com>,
	Cornelia Huck <cohuck@redhat.com>,
	Peter Shier <pshier@google.com>,
	Christoffer Dall <christoffer.dall@arm.com>,
	Sean Christopherson <sean.j.christopherson@intel.com>,
	linux-kernel@vger.kernel.org, James Morse <james.morse@arm.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Peter Feiner <pfeiner@google.com>
Subject: [PATCH 13/21] KVM: x86/mmu: Prepend "kvm_" to memory cache helpers that will be global
Date: Fri,  5 Jun 2020 14:38:45 -0700	[thread overview]
Message-ID: <20200605213853.14959-14-sean.j.christopherson@intel.com> (raw)
In-Reply-To: <20200605213853.14959-1-sean.j.christopherson@intel.com>

Rename the memory helpers that will soon be moved to common code and be
made globaly available via linux/kvm_host.h.  "mmu" alone is not a
sufficient namespace for globally available KVM symbols.

Opportunistically add "nr_" in mmu_memory_cache_free_objects() to make
it clear the function returns the number of free objects, as opposed to
freeing existing objects.

Suggested-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
---
 arch/x86/kvm/mmu/mmu.c | 42 +++++++++++++++++++++---------------------
 1 file changed, 21 insertions(+), 21 deletions(-)

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 8d66cf558f1b..b85d3e8e8403 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -1071,7 +1071,7 @@ static inline void *mmu_memory_cache_alloc_obj(struct kvm_mmu_memory_cache *mc,
 		return (void *)__get_free_page(gfp_flags);
 }
 
-static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *mc, int min)
+static int kvm_mmu_topup_memory_cache(struct kvm_mmu_memory_cache *mc, int min)
 {
 	void *obj;
 
@@ -1086,12 +1086,12 @@ static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *mc, int min)
 	return 0;
 }
 
-static int mmu_memory_cache_free_objects(struct kvm_mmu_memory_cache *mc)
+static int kvm_mmu_memory_cache_nr_free_objects(struct kvm_mmu_memory_cache *mc)
 {
 	return mc->nobjs;
 }
 
-static void mmu_free_memory_cache(struct kvm_mmu_memory_cache *mc)
+static void kvm_mmu_free_memory_cache(struct kvm_mmu_memory_cache *mc)
 {
 	while (mc->nobjs) {
 		if (mc->kmem_cache)
@@ -1106,33 +1106,33 @@ static int mmu_topup_memory_caches(struct kvm_vcpu *vcpu, bool maybe_indirect)
 	int r;
 
 	/* 1 rmap, 1 parent PTE per level, and the prefetched rmaps. */
-	r = mmu_topup_memory_cache(&vcpu->arch.mmu_pte_list_desc_cache,
-				   1 + PT64_ROOT_MAX_LEVEL + PTE_PREFETCH_NUM);
+	r = kvm_mmu_topup_memory_cache(&vcpu->arch.mmu_pte_list_desc_cache,
+				       1 + PT64_ROOT_MAX_LEVEL + PTE_PREFETCH_NUM);
 	if (r)
 		return r;
-	r = mmu_topup_memory_cache(&vcpu->arch.mmu_shadow_page_cache,
-				   PT64_ROOT_MAX_LEVEL);
+	r = kvm_mmu_topup_memory_cache(&vcpu->arch.mmu_shadow_page_cache,
+				       PT64_ROOT_MAX_LEVEL);
 	if (r)
 		return r;
 	if (maybe_indirect) {
-		r = mmu_topup_memory_cache(&vcpu->arch.mmu_gfn_array_cache,
-					   PT64_ROOT_MAX_LEVEL);
+		r = kvm_mmu_topup_memory_cache(&vcpu->arch.mmu_gfn_array_cache,
+					       PT64_ROOT_MAX_LEVEL);
 		if (r)
 			return r;
 	}
-	return mmu_topup_memory_cache(&vcpu->arch.mmu_page_header_cache,
-				      PT64_ROOT_MAX_LEVEL);
+	return kvm_mmu_topup_memory_cache(&vcpu->arch.mmu_page_header_cache,
+					  PT64_ROOT_MAX_LEVEL);
 }
 
 static void mmu_free_memory_caches(struct kvm_vcpu *vcpu)
 {
-	mmu_free_memory_cache(&vcpu->arch.mmu_pte_list_desc_cache);
-	mmu_free_memory_cache(&vcpu->arch.mmu_shadow_page_cache);
-	mmu_free_memory_cache(&vcpu->arch.mmu_gfn_array_cache);
-	mmu_free_memory_cache(&vcpu->arch.mmu_page_header_cache);
+	kvm_mmu_free_memory_cache(&vcpu->arch.mmu_pte_list_desc_cache);
+	kvm_mmu_free_memory_cache(&vcpu->arch.mmu_shadow_page_cache);
+	kvm_mmu_free_memory_cache(&vcpu->arch.mmu_gfn_array_cache);
+	kvm_mmu_free_memory_cache(&vcpu->arch.mmu_page_header_cache);
 }
 
-static void *mmu_memory_cache_alloc(struct kvm_mmu_memory_cache *mc)
+static void *kvm_mmu_memory_cache_alloc(struct kvm_mmu_memory_cache *mc)
 {
 	void *p;
 
@@ -1146,7 +1146,7 @@ static void *mmu_memory_cache_alloc(struct kvm_mmu_memory_cache *mc)
 
 static struct pte_list_desc *mmu_alloc_pte_list_desc(struct kvm_vcpu *vcpu)
 {
-	return mmu_memory_cache_alloc(&vcpu->arch.mmu_pte_list_desc_cache);
+	return kvm_mmu_memory_cache_alloc(&vcpu->arch.mmu_pte_list_desc_cache);
 }
 
 static void mmu_free_pte_list_desc(struct pte_list_desc *pte_list_desc)
@@ -1417,7 +1417,7 @@ static bool rmap_can_add(struct kvm_vcpu *vcpu)
 	struct kvm_mmu_memory_cache *mc;
 
 	mc = &vcpu->arch.mmu_pte_list_desc_cache;
-	return mmu_memory_cache_free_objects(mc);
+	return kvm_mmu_memory_cache_nr_free_objects(mc);
 }
 
 static int rmap_add(struct kvm_vcpu *vcpu, u64 *spte, gfn_t gfn)
@@ -2104,10 +2104,10 @@ static struct kvm_mmu_page *kvm_mmu_alloc_page(struct kvm_vcpu *vcpu, int direct
 {
 	struct kvm_mmu_page *sp;
 
-	sp = mmu_memory_cache_alloc(&vcpu->arch.mmu_page_header_cache);
-	sp->spt = mmu_memory_cache_alloc(&vcpu->arch.mmu_shadow_page_cache);
+	sp = kvm_mmu_memory_cache_alloc(&vcpu->arch.mmu_page_header_cache);
+	sp->spt = kvm_mmu_memory_cache_alloc(&vcpu->arch.mmu_shadow_page_cache);
 	if (!direct)
-		sp->gfns = mmu_memory_cache_alloc(&vcpu->arch.mmu_gfn_array_cache);
+		sp->gfns = kvm_mmu_memory_cache_alloc(&vcpu->arch.mmu_gfn_array_cache);
 	set_page_private(virt_to_page(sp->spt), (unsigned long)sp);
 
 	/*
-- 
2.26.0


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  parent reply	other threads:[~2020-06-05 21:45 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-05 21:38 [PATCH 00/21] KVM: Cleanup and unify kvm_mmu_memory_cache usage Sean Christopherson
2020-06-05 21:38 ` [PATCH 01/21] KVM: x86/mmu: Track the associated kmem_cache in the MMU caches Sean Christopherson
2020-06-09 21:07   ` Ben Gardon
2020-06-05 21:38 ` [PATCH 02/21] KVM: x86/mmu: Consolidate "page" variant of memory cache helpers Sean Christopherson
2020-06-09 22:54   ` Ben Gardon
2020-06-05 21:38 ` [PATCH 03/21] KVM: x86/mmu: Use consistent "mc" name for kvm_mmu_memory_cache locals Sean Christopherson
2020-06-10 22:03   ` Ben Gardon
2020-06-05 21:38 ` [PATCH 04/21] KVM: x86/mmu: Remove superfluous gotos from mmu_topup_memory_caches() Sean Christopherson
2020-06-09 22:57   ` Ben Gardon
2020-06-05 21:38 ` [PATCH 05/21] KVM: x86/mmu: Try to avoid crashing KVM if a MMU memory cache is empty Sean Christopherson
2020-06-10 22:12   ` Ben Gardon
2020-06-17  0:53     ` Sean Christopherson
2020-06-17 16:36       ` Ben Gardon
2020-06-05 21:38 ` [PATCH 06/21] KVM: x86/mmu: Move fast_page_fault() call above mmu_topup_memory_caches() Sean Christopherson
2020-06-09 23:03   ` Ben Gardon
2020-06-05 21:38 ` [PATCH 07/21] KVM: x86/mmu: Topup memory caches after walking GVA->GPA Sean Christopherson
2020-06-10 22:34   ` Ben Gardon
2020-06-05 21:38 ` [PATCH 08/21] KVM: x86/mmu: Clean up the gorilla math in mmu_topup_memory_caches() Sean Christopherson
2020-06-10 22:20   ` Ben Gardon
2020-06-05 21:38 ` [PATCH 09/21] KVM: x86/mmu: Separate the memory caches for shadow pages and gfn arrays Sean Christopherson
2020-06-09 23:56   ` Ben Gardon
2020-06-05 21:38 ` [PATCH 10/21] KVM: x86/mmu: Make __GFP_ZERO a property of the memory cache Sean Christopherson
2020-06-10 18:57   ` Ben Gardon
2020-06-05 21:38 ` [PATCH 11/21] KVM: x86/mmu: Zero allocate shadow pages (outside of mmu_lock) Sean Christopherson
2020-06-10 18:49   ` Ben Gardon
2020-06-05 21:38 ` [PATCH 12/21] KVM: x86/mmu: Skip filling the gfn cache for guaranteed direct MMU topups Sean Christopherson
2020-06-10 18:52   ` Ben Gardon
2020-06-05 21:38 ` Sean Christopherson [this message]
2020-06-10 18:56   ` [PATCH 13/21] KVM: x86/mmu: Prepend "kvm_" to memory cache helpers that will be global Ben Gardon
2020-06-05 21:38 ` [PATCH 14/21] KVM: Move x86's version of struct kvm_mmu_memory_cache to common code Sean Christopherson
2020-06-10 19:01   ` Ben Gardon
2020-06-10 21:58     ` Ben Gardon
2020-06-11  7:42   ` Marc Zyngier
2020-06-05 21:38 ` [PATCH 15/21] KVM: Move x86's MMU memory cache helpers to common KVM code Sean Christopherson
2020-06-10 20:24   ` Ben Gardon
2020-06-05 21:38 ` [PATCH 16/21] KVM: arm64: Drop @max param from mmu_topup_memory_cache() Sean Christopherson
2020-06-10 22:00   ` Ben Gardon
2020-06-11 15:59     ` Sean Christopherson
2020-06-05 21:38 ` [PATCH 17/21] KVM: arm64: Use common code's approach for __GFP_ZERO with memory caches Sean Christopherson
2020-06-11  7:59   ` Marc Zyngier
2020-06-11 15:43     ` Sean Christopherson
2020-06-11 15:51       ` Marc Zyngier
2020-06-05 21:38 ` [PATCH 18/21] KVM: arm64: Use common KVM implementation of MMU " Sean Christopherson
2020-06-11  8:01   ` Marc Zyngier
2020-06-11 15:46     ` Sean Christopherson
2020-06-05 21:38 ` [PATCH 19/21] KVM: MIPS: Drop @max param from mmu_topup_memory_cache() Sean Christopherson
2020-06-08  8:56   ` Huacai Chen
2020-06-05 21:38 ` [PATCH 20/21] KVM: MIPS: Account pages used for GPA page tables Sean Christopherson
2020-06-08  8:56   ` Huacai Chen
2020-06-05 21:38 ` [PATCH 21/21] KVM: MIPS: Use common KVM implementation of MMU memory caches Sean Christopherson
2020-06-08  8:57   ` Huacai Chen
2020-06-11  8:06 ` [PATCH 00/21] KVM: Cleanup and unify kvm_mmu_memory_cache usage Marc Zyngier

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