linux-kernel - [PATCH 4/5] KVM: x86/mmu: Add typedefs for rmap/iter handlers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 25 Feb 2021 17:03:28 -0800
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Ben Gardon <bgardon@...gle.com>
Subject: [PATCH 4/5] KVM: x86/mmu: Add typedefs for rmap/iter handlers

Add typedefs for the MMU handlers that are invoked when walking the MMU
SPTEs (rmaps in legacy MMU) to act on a host virtual address range.

No functional change intended.

Cc: Ben Gardon <bgardon@...gle.com>
Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 arch/x86/kvm/mmu/mmu.c     | 27 ++++++++++-----------------
 arch/x86/kvm/mmu/tdp_mmu.c | 20 +++++++++-----------
 2 files changed, 19 insertions(+), 28 deletions(-)

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index d75524bc8423..1ee01ca196bd 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -1424,17 +1424,15 @@ static void slot_rmap_walk_next(struct slot_rmap_walk_iterator *iterator)
 	     slot_rmap_walk_okay(_iter_);				\
 	     slot_rmap_walk_next(_iter_))
 
-static __always_inline int
-kvm_handle_hva_range(struct kvm *kvm,
-		     unsigned long start,
-		     unsigned long end,
-		     unsigned long data,
-		     int (*handler)(struct kvm *kvm,
-				    struct kvm_rmap_head *rmap_head,
-				    struct kvm_memory_slot *slot,
-				    gfn_t gfn,
-				    int level,
-				    unsigned long data))
+typedef int (*rmap_handler_t)(struct kvm *kvm, struct kvm_rmap_head *rmap_head,
+			      struct kvm_memory_slot *slot, gfn_t gfn,
+			      int level, unsigned long data);
+
+static __always_inline int kvm_handle_hva_range(struct kvm *kvm,
+						unsigned long start,
+						unsigned long end,
+						unsigned long data,
+						rmap_handler_t handler)
 {
 	struct kvm_memslots *slots;
 	struct kvm_memory_slot *memslot;
@@ -1473,12 +1471,7 @@ kvm_handle_hva_range(struct kvm *kvm,
 }
 
 static int kvm_handle_hva(struct kvm *kvm, unsigned long hva,
-			  unsigned long data,
-			  int (*handler)(struct kvm *kvm,
-					 struct kvm_rmap_head *rmap_head,
-					 struct kvm_memory_slot *slot,
-					 gfn_t gfn, int level,
-					 unsigned long data))
+			  unsigned long data, rmap_handler_t handler)
 {
 	return kvm_handle_hva_range(kvm, hva, hva + 1, data, handler);
 }
diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index 9ce8d226b621..b6f829b58e67 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -879,17 +879,15 @@ int kvm_tdp_mmu_map(struct kvm_vcpu *vcpu, gpa_t gpa, u32 error_code,
 	return ret;
 }
 
-static __always_inline int
-kvm_tdp_mmu_handle_hva_range(struct kvm *kvm,
-			     unsigned long start,
-			     unsigned long end,
-			     unsigned long data,
-			     int (*handler)(struct kvm *kvm,
-					    struct kvm_memory_slot *slot,
-					    struct kvm_mmu_page *root,
-					    gfn_t start,
-					    gfn_t end,
-					    unsigned long data))
+typedef int (*tdp_handler_t)(struct kvm *kvm, struct kvm_memory_slot *slot,
+			     struct kvm_mmu_page *root, gfn_t start, gfn_t end,
+			     unsigned long data);
+
+static __always_inline int kvm_tdp_mmu_handle_hva_range(struct kvm *kvm,
+							unsigned long start,
+							unsigned long end,
+							unsigned long data,
+							tdp_handler_t handler)
 {
 	struct kvm_memslots *slots;
 	struct kvm_memory_slot *memslot;
-- 
2.30.1.766.gb4fecdf3b7-goog