linux-kernel - [RFC PATCH 3/8] KVM: x86/mmu: Introduce initialier macro for struct kvm_page

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Date: Fri,  1 Mar 2024 09:28:45 -0800
From: isaku.yamahata@...el.com
To: kvm@...r.kernel.org
Cc: isaku.yamahata@...el.com,
	isaku.yamahata@...il.com,
	linux-kernel@...r.kernel.org,
	Sean Christopherson <seanjc@...gle.com>,
	Paolo Bonzini <pbonzini@...hat.com>,
	Michael Roth <michael.roth@....com>,
	David Matlack <dmatlack@...gle.com>,
	Federico Parola <federico.parola@...ito.it>
Subject: [RFC PATCH 3/8] KVM: x86/mmu: Introduce initialier macro for struct kvm_page_fault

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

Another function will initialize struct kvm_page_fault.  Add initializer
macro to unify the big struct initialization.

No functional change intended.

Signed-off-by: Isaku Yamahata <isaku.yamahata@...el.com>
---
 arch/x86/kvm/mmu/mmu_internal.h | 44 +++++++++++++++++++--------------
 1 file changed, 26 insertions(+), 18 deletions(-)

diff --git a/arch/x86/kvm/mmu/mmu_internal.h b/arch/x86/kvm/mmu/mmu_internal.h
index 0669a8a668ca..72ef09fc9322 100644
--- a/arch/x86/kvm/mmu/mmu_internal.h
+++ b/arch/x86/kvm/mmu/mmu_internal.h
@@ -279,27 +279,35 @@ enum {
 	RET_PF_SPURIOUS,
 };
 
+#define KVM_PAGE_FAULT_INIT(_vcpu, _cr2_or_gpa, _err, _prefetch, _max_level) {	\
+	.addr = (_cr2_or_gpa),							\
+	.error_code = (_err),							\
+	.exec = (_err) & PFERR_FETCH_MASK,					\
+	.write = (_err) & PFERR_WRITE_MASK,					\
+	.present = (_err) & PFERR_PRESENT_MASK,					\
+	.rsvd = (_err) & PFERR_RSVD_MASK,					\
+	.user = (_err) & PFERR_USER_MASK,					\
+	.prefetch = (_prefetch),						\
+	.is_tdp =								\
+	likely((_vcpu)->arch.mmu->page_fault == kvm_tdp_page_fault),		\
+	.nx_huge_page_workaround_enabled =					\
+	is_nx_huge_page_enabled((_vcpu)->kvm),					\
+										\
+	.max_level = (_max_level),						\
+	.req_level = PG_LEVEL_4K,						\
+	.goal_level = PG_LEVEL_4K,						\
+	.is_private =								\
+	kvm_mem_is_private((_vcpu)->kvm, (_cr2_or_gpa) >> PAGE_SHIFT),		\
+										\
+	.pfn = KVM_PFN_ERR_FAULT,						\
+	.hva = KVM_HVA_ERR_BAD, }
+
 static inline int kvm_mmu_do_page_fault(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa,
 					u32 err, bool prefetch, int *emulation_type)
 {
-	struct kvm_page_fault fault = {
-		.addr = cr2_or_gpa,
-		.error_code = err,
-		.exec = err & PFERR_FETCH_MASK,
-		.write = err & PFERR_WRITE_MASK,
-		.present = err & PFERR_PRESENT_MASK,
-		.rsvd = err & PFERR_RSVD_MASK,
-		.user = err & PFERR_USER_MASK,
-		.prefetch = prefetch,
-		.is_tdp = likely(vcpu->arch.mmu->page_fault == kvm_tdp_page_fault),
-		.nx_huge_page_workaround_enabled =
-			is_nx_huge_page_enabled(vcpu->kvm),
-
-		.max_level = KVM_MAX_HUGEPAGE_LEVEL,
-		.req_level = PG_LEVEL_4K,
-		.goal_level = PG_LEVEL_4K,
-		.is_private = kvm_mem_is_private(vcpu->kvm, cr2_or_gpa >> PAGE_SHIFT),
-	};
+	struct kvm_page_fault fault = KVM_PAGE_FAULT_INIT(vcpu, cr2_or_gpa, err,
+							  prefetch,
+							  KVM_MAX_HUGEPAGE_LEVEL);
 	int r;
 
 	if (vcpu->arch.mmu->root_role.direct) {
-- 
2.25.1