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Message-ID: <20221221222418.3307832-9-bgardon@google.com>
Date: Wed, 21 Dec 2022 22:24:12 +0000
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>,
David Matlack <dmatlack@...gle.com>,
Vipin Sharma <vipinsh@...gle.com>,
Nagareddy Reddy <nspreddy@...gle.com>,
Ben Gardon <bgardon@...gle.com>
Subject: [RFC 08/14] KVM: x86/MMU: Clean up naming of exported Shadow MMU functions
Change the naming scheme on several functions exported from the shadow
MMU to match the naming scheme used by the TDP MMU: kvm_shadow_mmu_.
More cleanups will follow to convert the remaining functions to a similar
naming scheme, but for now, start with the trivial renames.
No functional change intended.
Signed-off-by: Ben Gardon <bgardon@...gle.com>
---
arch/x86/kvm/mmu/mmu.c | 19 ++++++++++---------
arch/x86/kvm/mmu/paging_tmpl.h | 2 +-
arch/x86/kvm/mmu/shadow_mmu.c | 19 ++++++++++---------
arch/x86/kvm/mmu/shadow_mmu.h | 17 +++++++++--------
4 files changed, 30 insertions(+), 27 deletions(-)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 4c45a5b63356..bacb519ba7b4 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -1129,7 +1129,7 @@ static int mmu_alloc_direct_roots(struct kvm_vcpu *vcpu)
int r;
write_lock(&vcpu->kvm->mmu_lock);
- r = make_mmu_pages_available(vcpu);
+ r = kvm_shadow_mmu_make_pages_available(vcpu);
if (r < 0)
goto out_unlock;
@@ -1204,7 +1204,7 @@ static bool get_mmio_spte(struct kvm_vcpu *vcpu, u64 addr, u64 *sptep)
if (is_tdp_mmu(vcpu->arch.mmu))
leaf = kvm_tdp_mmu_get_walk(vcpu, addr, sptes, &root);
else
- leaf = get_walk(vcpu, addr, sptes, &root);
+ leaf = kvm_shadow_mmu_get_walk(vcpu, addr, sptes, &root);
walk_shadow_page_lockless_end(vcpu);
@@ -1469,14 +1469,14 @@ static int direct_page_fault(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault
if (is_page_fault_stale(vcpu, fault, mmu_seq))
goto out_unlock;
- r = make_mmu_pages_available(vcpu);
+ r = kvm_shadow_mmu_make_pages_available(vcpu);
if (r)
goto out_unlock;
if (is_tdp_mmu_fault)
r = kvm_tdp_mmu_map(vcpu, fault);
else
- r = __direct_map(vcpu, fault);
+ r = kvm_shadow_mmu_direct_map(vcpu, fault);
out_unlock:
if (is_tdp_mmu_fault)
@@ -1514,7 +1514,7 @@ int kvm_handle_page_fault(struct kvm_vcpu *vcpu, u64 error_code,
trace_kvm_page_fault(vcpu, fault_address, error_code);
if (kvm_event_needs_reinjection(vcpu))
- kvm_mmu_unprotect_page_virt(vcpu, fault_address);
+ kvm_shadow_mmu_unprotect_page_virt(vcpu, fault_address);
r = kvm_mmu_page_fault(vcpu, fault_address, error_code, insn,
insn_len);
} else if (flags & KVM_PV_REASON_PAGE_NOT_PRESENT) {
@@ -2791,7 +2791,8 @@ static void kvm_mmu_zap_all_fast(struct kvm *kvm)
* In order to ensure all vCPUs drop their soon-to-be invalid roots,
* invalidating TDP MMU roots must be done while holding mmu_lock for
* write and in the same critical section as making the reload request,
- * e.g. before kvm_zap_obsolete_pages() could drop mmu_lock and yield.
+ * e.g. before kvm_shadow_mmu_zap_obsolete_pages() could drop mmu_lock
+ * and yield.
*/
if (is_tdp_mmu_enabled(kvm))
kvm_tdp_mmu_invalidate_all_roots(kvm);
@@ -2806,7 +2807,7 @@ static void kvm_mmu_zap_all_fast(struct kvm *kvm)
*/
kvm_make_all_cpus_request(kvm, KVM_REQ_MMU_FREE_OBSOLETE_ROOTS);
- kvm_zap_obsolete_pages(kvm);
+ kvm_shadow_mmu_zap_obsolete_pages(kvm);
write_unlock(&kvm->mmu_lock);
@@ -2892,7 +2893,7 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end)
kvm_mmu_invalidate_begin(kvm, gfn_start, gfn_end);
- flush = kvm_rmap_zap_gfn_range(kvm, gfn_start, gfn_end);
+ flush = kvm_shadow_mmu_zap_gfn_range(kvm, gfn_start, gfn_end);
if (is_tdp_mmu_enabled(kvm)) {
for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++)
@@ -3036,7 +3037,7 @@ void kvm_mmu_zap_collapsible_sptes(struct kvm *kvm,
{
if (kvm_memslots_have_rmaps(kvm)) {
write_lock(&kvm->mmu_lock);
- kvm_rmap_zap_collapsible_sptes(kvm, slot);
+ kvm_shadow_mmu_zap_collapsible_sptes(kvm, slot);
write_unlock(&kvm->mmu_lock);
}
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index 2e3b2aca64ad..85c0b186cb0a 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -874,7 +874,7 @@ int FNAME(page_fault)(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault)
if (is_page_fault_stale(vcpu, fault, mmu_seq))
goto out_unlock;
- r = make_mmu_pages_available(vcpu);
+ r = kvm_shadow_mmu_make_pages_available(vcpu);
if (r)
goto out_unlock;
r = FNAME(fetch)(vcpu, fault, &walker);
diff --git a/arch/x86/kvm/mmu/shadow_mmu.c b/arch/x86/kvm/mmu/shadow_mmu.c
index 1259c4a3b140..e36b4d9c67f2 100644
--- a/arch/x86/kvm/mmu/shadow_mmu.c
+++ b/arch/x86/kvm/mmu/shadow_mmu.c
@@ -1965,7 +1965,7 @@ static inline unsigned long kvm_mmu_available_pages(struct kvm *kvm)
return 0;
}
-int make_mmu_pages_available(struct kvm_vcpu *vcpu)
+int kvm_shadow_mmu_make_pages_available(struct kvm_vcpu *vcpu)
{
unsigned long avail = kvm_mmu_available_pages(vcpu->kvm);
@@ -2029,7 +2029,7 @@ int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn)
return r;
}
-int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva)
+int kvm_shadow_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva)
{
gpa_t gpa;
int r;
@@ -2319,7 +2319,7 @@ static void direct_pte_prefetch(struct kvm_vcpu *vcpu, u64 *sptep)
__direct_pte_prefetch(vcpu, sp, sptep);
}
-int __direct_map(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault)
+int kvm_shadow_mmu_direct_map(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault)
{
struct kvm_shadow_walk_iterator it;
struct kvm_mmu_page *sp;
@@ -2537,7 +2537,7 @@ int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu)
return r;
write_lock(&vcpu->kvm->mmu_lock);
- r = make_mmu_pages_available(vcpu);
+ r = kvm_shadow_mmu_make_pages_available(vcpu);
if (r < 0)
goto out_unlock;
@@ -2785,7 +2785,8 @@ void kvm_mmu_sync_prev_roots(struct kvm_vcpu *vcpu)
*
* Must be called between walk_shadow_page_lockless_{begin,end}.
*/
-int get_walk(struct kvm_vcpu *vcpu, u64 addr, u64 *sptes, int *root_level)
+int kvm_shadow_mmu_get_walk(struct kvm_vcpu *vcpu, u64 addr, u64 *sptes,
+ int *root_level)
{
struct kvm_shadow_walk_iterator iterator;
int leaf = -1;
@@ -3091,7 +3092,7 @@ __always_inline bool slot_handle_level_4k(struct kvm *kvm,
}
#define BATCH_ZAP_PAGES 10
-void kvm_zap_obsolete_pages(struct kvm *kvm)
+void kvm_shadow_mmu_zap_obsolete_pages(struct kvm *kvm)
{
struct kvm_mmu_page *sp, *node;
int nr_zapped, batch = 0;
@@ -3152,7 +3153,7 @@ bool kvm_shadow_mmu_has_zapped_obsolete_pages(struct kvm *kvm)
return unlikely(!list_empty_careful(&kvm->arch.zapped_obsolete_pages));
}
-bool kvm_rmap_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end)
+bool kvm_shadow_mmu_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end)
{
const struct kvm_memory_slot *memslot;
struct kvm_memslots *slots;
@@ -3404,8 +3405,8 @@ static bool kvm_mmu_zap_collapsible_spte(struct kvm *kvm,
return need_tlb_flush;
}
-void kvm_rmap_zap_collapsible_sptes(struct kvm *kvm,
- const struct kvm_memory_slot *slot)
+void kvm_shadow_mmu_zap_collapsible_sptes(struct kvm *kvm,
+ const struct kvm_memory_slot *slot)
{
/*
* Note, use KVM_MAX_HUGEPAGE_LEVEL - 1 since there's no need to zap
diff --git a/arch/x86/kvm/mmu/shadow_mmu.h b/arch/x86/kvm/mmu/shadow_mmu.h
index 9952aa1e86cf..148cc3593d2b 100644
--- a/arch/x86/kvm/mmu/shadow_mmu.h
+++ b/arch/x86/kvm/mmu/shadow_mmu.h
@@ -60,18 +60,19 @@ bool kvm_mmu_prepare_zap_page(struct kvm *kvm, struct kvm_mmu_page *sp,
struct list_head *invalid_list);
void kvm_mmu_commit_zap_page(struct kvm *kvm, struct list_head *invalid_list);
-int make_mmu_pages_available(struct kvm_vcpu *vcpu);
+int kvm_shadow_mmu_make_pages_available(struct kvm_vcpu *vcpu);
-int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
+int kvm_shadow_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
-int __direct_map(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault);
+int kvm_shadow_mmu_direct_map(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault);
u64 *fast_pf_get_last_sptep(struct kvm_vcpu *vcpu, gpa_t gpa, u64 *spte);
hpa_t mmu_alloc_root(struct kvm_vcpu *vcpu, gfn_t gfn, int quadrant, u8 level);
int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu);
int mmu_alloc_special_roots(struct kvm_vcpu *vcpu);
-int get_walk(struct kvm_vcpu *vcpu, u64 addr, u64 *sptes, int *root_level);
+int kvm_shadow_mmu_get_walk(struct kvm_vcpu *vcpu, u64 addr, u64 *sptes,
+ int *root_level);
void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, const u8 *new,
int bytes, struct kvm_page_track_notifier_node *node);
@@ -86,8 +87,8 @@ bool slot_handle_level(struct kvm *kvm, const struct kvm_memory_slot *memslot,
bool slot_handle_level_4k(struct kvm *kvm, const struct kvm_memory_slot *memslot,
slot_level_handler fn, bool flush_on_yield);
-void kvm_zap_obsolete_pages(struct kvm *kvm);
-bool kvm_rmap_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end);
+void kvm_shadow_mmu_zap_obsolete_pages(struct kvm *kvm);
+bool kvm_shadow_mmu_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end);
bool slot_rmap_write_protect(struct kvm *kvm, struct kvm_rmap_head *rmap_head,
const struct kvm_memory_slot *slot);
@@ -96,8 +97,8 @@ void kvm_shadow_mmu_try_split_huge_pages(struct kvm *kvm,
const struct kvm_memory_slot *slot,
gfn_t start, gfn_t end,
int target_level);
-void kvm_rmap_zap_collapsible_sptes(struct kvm *kvm,
- const struct kvm_memory_slot *slot);
+void kvm_shadow_mmu_zap_collapsible_sptes(struct kvm *kvm,
+ const struct kvm_memory_slot *slot);
bool kvm_shadow_mmu_has_zapped_obsolete_pages(struct kvm *kvm);
unsigned long kvm_shadow_mmu_shrink_scan(struct kvm *kvm, int pages_to_free);
--
2.39.0.314.g84b9a713c41-goog
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