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-rw-r--r--arch/x86/kvm/mmu/mmu.c48
-rw-r--r--arch/x86/kvm/mmu/mmu_internal.h2
-rw-r--r--arch/x86/kvm/mmu/page_track.c16
-rw-r--r--arch/x86/kvm/mmu/paging_tmpl.h4
-rw-r--r--arch/x86/kvm/mmu/spte.c4
-rw-r--r--arch/x86/kvm/mmu/tdp_iter.c4
-rw-r--r--arch/x86/kvm/mmu/tdp_mmu.c20
7 files changed, 49 insertions, 49 deletions
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 8dc40d023742..ab3325981f9a 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -481,7 +481,7 @@ retry:
*/
static void mmu_spte_set(u64 *sptep, u64 new_spte)
{
- WARN_ON(is_shadow_present_pte(*sptep));
+ WARN_ON_ONCE(is_shadow_present_pte(*sptep));
__set_spte(sptep, new_spte);
}
@@ -493,7 +493,7 @@ static u64 mmu_spte_update_no_track(u64 *sptep, u64 new_spte)
{
u64 old_spte = *sptep;
- WARN_ON(!is_shadow_present_pte(new_spte));
+ WARN_ON_ONCE(!is_shadow_present_pte(new_spte));
check_spte_writable_invariants(new_spte);
if (!is_shadow_present_pte(old_spte)) {
@@ -506,7 +506,7 @@ static u64 mmu_spte_update_no_track(u64 *sptep, u64 new_spte)
else
old_spte = __update_clear_spte_slow(sptep, new_spte);
- WARN_ON(spte_to_pfn(old_spte) != spte_to_pfn(new_spte));
+ WARN_ON_ONCE(spte_to_pfn(old_spte) != spte_to_pfn(new_spte));
return old_spte;
}
@@ -588,7 +588,7 @@ static u64 mmu_spte_clear_track_bits(struct kvm *kvm, u64 *sptep)
* by a refcounted page, the refcount is elevated.
*/
page = kvm_pfn_to_refcounted_page(pfn);
- WARN_ON(page && !page_count(page));
+ WARN_ON_ONCE(page && !page_count(page));
if (is_accessed_spte(old_spte))
kvm_set_pfn_accessed(pfn);
@@ -803,7 +803,7 @@ static void update_gfn_disallow_lpage_count(const struct kvm_memory_slot *slot,
for (i = PG_LEVEL_2M; i <= KVM_MAX_HUGEPAGE_LEVEL; ++i) {
linfo = lpage_info_slot(gfn, slot, i);
linfo->disallow_lpage += count;
- WARN_ON(linfo->disallow_lpage < 0);
+ WARN_ON_ONCE(linfo->disallow_lpage < 0);
}
}
@@ -1198,7 +1198,7 @@ static void drop_large_spte(struct kvm *kvm, u64 *sptep, bool flush)
struct kvm_mmu_page *sp;
sp = sptep_to_sp(sptep);
- WARN_ON(sp->role.level == PG_LEVEL_4K);
+ WARN_ON_ONCE(sp->role.level == PG_LEVEL_4K);
drop_spte(kvm, sptep);
@@ -1457,7 +1457,7 @@ static bool kvm_set_pte_rmap(struct kvm *kvm, struct kvm_rmap_head *rmap_head,
u64 new_spte;
kvm_pfn_t new_pfn;
- WARN_ON(pte_huge(pte));
+ WARN_ON_ONCE(pte_huge(pte));
new_pfn = pte_pfn(pte);
restart:
@@ -1818,7 +1818,7 @@ static int mmu_pages_add(struct kvm_mmu_pages *pvec, struct kvm_mmu_page *sp,
static inline void clear_unsync_child_bit(struct kvm_mmu_page *sp, int idx)
{
--sp->unsync_children;
- WARN_ON((int)sp->unsync_children < 0);
+ WARN_ON_ONCE((int)sp->unsync_children < 0);
__clear_bit(idx, sp->unsync_child_bitmap);
}
@@ -1876,7 +1876,7 @@ static int mmu_unsync_walk(struct kvm_mmu_page *sp,
static void kvm_unlink_unsync_page(struct kvm *kvm, struct kvm_mmu_page *sp)
{
- WARN_ON(!sp->unsync);
+ WARN_ON_ONCE(!sp->unsync);
trace_kvm_mmu_sync_page(sp);
sp->unsync = 0;
--kvm->stat.mmu_unsync;
@@ -2051,11 +2051,11 @@ static int mmu_pages_first(struct kvm_mmu_pages *pvec,
if (pvec->nr == 0)
return 0;
- WARN_ON(pvec->page[0].idx != INVALID_INDEX);
+ WARN_ON_ONCE(pvec->page[0].idx != INVALID_INDEX);
sp = pvec->page[0].sp;
level = sp->role.level;
- WARN_ON(level == PG_LEVEL_4K);
+ WARN_ON_ONCE(level == PG_LEVEL_4K);
parents->parent[level-2] = sp;
@@ -2077,7 +2077,7 @@ static void mmu_pages_clear_parents(struct mmu_page_path *parents)
if (!sp)
return;
- WARN_ON(idx == INVALID_INDEX);
+ WARN_ON_ONCE(idx == INVALID_INDEX);
clear_unsync_child_bit(sp, idx);
level++;
} while (!sp->unsync_children);
@@ -2198,7 +2198,7 @@ static struct kvm_mmu_page *kvm_mmu_find_shadow_page(struct kvm *kvm,
if (ret < 0)
break;
- WARN_ON(!list_empty(&invalid_list));
+ WARN_ON_ONCE(!list_empty(&invalid_list));
if (ret > 0)
kvm_flush_remote_tlbs(kvm);
}
@@ -2653,7 +2653,7 @@ static void kvm_mmu_commit_zap_page(struct kvm *kvm,
kvm_flush_remote_tlbs(kvm);
list_for_each_entry_safe(sp, nsp, invalid_list, link) {
- WARN_ON(!sp->role.invalid || sp->root_count);
+ WARN_ON_ONCE(!sp->role.invalid || sp->root_count);
kvm_mmu_free_shadow_page(sp);
}
}
@@ -2848,7 +2848,7 @@ int mmu_try_to_unsync_pages(struct kvm *kvm, const struct kvm_memory_slot *slot,
continue;
}
- WARN_ON(sp->role.level != PG_LEVEL_4K);
+ WARN_ON_ONCE(sp->role.level != PG_LEVEL_4K);
kvm_unsync_page(kvm, sp);
}
if (locked)
@@ -3001,7 +3001,7 @@ static void __direct_pte_prefetch(struct kvm_vcpu *vcpu,
u64 *spte, *start = NULL;
int i;
- WARN_ON(!sp->role.direct);
+ WARN_ON_ONCE(!sp->role.direct);
i = spte_index(sptep) & ~(PTE_PREFETCH_NUM - 1);
spte = sp->spt + i;
@@ -3547,7 +3547,7 @@ static void mmu_free_root_page(struct kvm *kvm, hpa_t *root_hpa,
* SPTE to ensure any non-PA bits are dropped.
*/
sp = spte_to_child_sp(*root_hpa);
- if (WARN_ON(!sp))
+ if (WARN_ON_ONCE(!sp))
return;
if (is_tdp_mmu_page(sp))
@@ -4162,7 +4162,7 @@ static int handle_mmio_page_fault(struct kvm_vcpu *vcpu, u64 addr, bool direct)
return RET_PF_EMULATE;
reserved = get_mmio_spte(vcpu, addr, &spte);
- if (WARN_ON(reserved))
+ if (WARN_ON_ONCE(reserved))
return -EINVAL;
if (is_mmio_spte(spte)) {
@@ -5483,9 +5483,9 @@ void kvm_mmu_unload(struct kvm_vcpu *vcpu)
struct kvm *kvm = vcpu->kvm;
kvm_mmu_free_roots(kvm, &vcpu->arch.root_mmu, KVM_MMU_ROOTS_ALL);
- WARN_ON(VALID_PAGE(vcpu->arch.root_mmu.root.hpa));
+ WARN_ON_ONCE(VALID_PAGE(vcpu->arch.root_mmu.root.hpa));
kvm_mmu_free_roots(kvm, &vcpu->arch.guest_mmu, KVM_MMU_ROOTS_ALL);
- WARN_ON(VALID_PAGE(vcpu->arch.guest_mmu.root.hpa));
+ WARN_ON_ONCE(VALID_PAGE(vcpu->arch.guest_mmu.root.hpa));
vcpu_clear_mmio_info(vcpu, MMIO_GVA_ANY);
}
@@ -5700,7 +5700,7 @@ int noinline kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa, u64 err
if (WARN_ON_ONCE(error_code & PFERR_IMPLICIT_ACCESS))
error_code &= ~PFERR_IMPLICIT_ACCESS;
- if (WARN_ON(!VALID_PAGE(vcpu->arch.mmu->root.hpa)))
+ if (WARN_ON_ONCE(!VALID_PAGE(vcpu->arch.mmu->root.hpa)))
return RET_PF_RETRY;
r = RET_PF_INVALID;
@@ -6057,7 +6057,7 @@ restart:
* pages. Skip the bogus page, otherwise we'll get stuck in an
* infinite loop if the page gets put back on the list (again).
*/
- if (WARN_ON(sp->role.invalid))
+ if (WARN_ON_ONCE(sp->role.invalid))
continue;
/*
@@ -6685,7 +6685,7 @@ void kvm_mmu_zap_all(struct kvm *kvm)
write_lock(&kvm->mmu_lock);
restart:
list_for_each_entry_safe(sp, node, &kvm->arch.active_mmu_pages, link) {
- if (WARN_ON(sp->role.invalid))
+ if (WARN_ON_ONCE(sp->role.invalid))
continue;
if (__kvm_mmu_prepare_zap_page(kvm, sp, &invalid_list, &ign))
goto restart;
@@ -6703,7 +6703,7 @@ restart:
void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm, u64 gen)
{
- WARN_ON(gen & KVM_MEMSLOT_GEN_UPDATE_IN_PROGRESS);
+ WARN_ON_ONCE(gen & KVM_MEMSLOT_GEN_UPDATE_IN_PROGRESS);
gen &= MMIO_SPTE_GEN_MASK;
diff --git a/arch/x86/kvm/mmu/mmu_internal.h b/arch/x86/kvm/mmu/mmu_internal.h
index d5ef61635b94..6b6cd30bcf4b 100644
--- a/arch/x86/kvm/mmu/mmu_internal.h
+++ b/arch/x86/kvm/mmu/mmu_internal.h
@@ -9,7 +9,7 @@
#undef MMU_DEBUG
#ifdef MMU_DEBUG
-#define KVM_MMU_WARN_ON(x) WARN_ON(x)
+#define KVM_MMU_WARN_ON(x) WARN_ON_ONCE(x)
#else
#define KVM_MMU_WARN_ON(x) do { } while (0)
#endif
diff --git a/arch/x86/kvm/mmu/page_track.c b/arch/x86/kvm/mmu/page_track.c
index 0a2ac438d647..fd16918b3a7a 100644
--- a/arch/x86/kvm/mmu/page_track.c
+++ b/arch/x86/kvm/mmu/page_track.c
@@ -94,7 +94,7 @@ static void update_gfn_track(struct kvm_memory_slot *slot, gfn_t gfn,
val = slot->arch.gfn_track[mode][index];
- if (WARN_ON(val + count < 0 || val + count > USHRT_MAX))
+ if (WARN_ON_ONCE(val + count < 0 || val + count > USHRT_MAX))
return;
slot->arch.gfn_track[mode][index] += count;
@@ -117,11 +117,11 @@ void kvm_slot_page_track_add_page(struct kvm *kvm,
enum kvm_page_track_mode mode)
{
- if (WARN_ON(!page_track_mode_is_valid(mode)))
+ if (WARN_ON_ONCE(!page_track_mode_is_valid(mode)))
return;
- if (WARN_ON(mode == KVM_PAGE_TRACK_WRITE &&
- !kvm_page_track_write_tracking_enabled(kvm)))
+ if (WARN_ON_ONCE(mode == KVM_PAGE_TRACK_WRITE &&
+ !kvm_page_track_write_tracking_enabled(kvm)))
return;
update_gfn_track(slot, gfn, mode, 1);
@@ -155,11 +155,11 @@ void kvm_slot_page_track_remove_page(struct kvm *kvm,
struct kvm_memory_slot *slot, gfn_t gfn,
enum kvm_page_track_mode mode)
{
- if (WARN_ON(!page_track_mode_is_valid(mode)))
+ if (WARN_ON_ONCE(!page_track_mode_is_valid(mode)))
return;
- if (WARN_ON(mode == KVM_PAGE_TRACK_WRITE &&
- !kvm_page_track_write_tracking_enabled(kvm)))
+ if (WARN_ON_ONCE(mode == KVM_PAGE_TRACK_WRITE &&
+ !kvm_page_track_write_tracking_enabled(kvm)))
return;
update_gfn_track(slot, gfn, mode, -1);
@@ -181,7 +181,7 @@ bool kvm_slot_page_track_is_active(struct kvm *kvm,
{
int index;
- if (WARN_ON(!page_track_mode_is_valid(mode)))
+ if (WARN_ON_ONCE(!page_track_mode_is_valid(mode)))
return false;
if (!slot)
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index 7a97f769a7cb..a3fc7c1a7f8d 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -633,7 +633,7 @@ static int FNAME(fetch)(struct kvm_vcpu *vcpu, struct kvm_page_fault *fault,
if (FNAME(gpte_changed)(vcpu, gw, top_level))
goto out_gpte_changed;
- if (WARN_ON(!VALID_PAGE(vcpu->arch.mmu->root.hpa)))
+ if (WARN_ON_ONCE(!VALID_PAGE(vcpu->arch.mmu->root.hpa)))
goto out_gpte_changed;
for_each_shadow_entry(vcpu, fault->addr, it) {
@@ -830,7 +830,7 @@ static gpa_t FNAME(get_level1_sp_gpa)(struct kvm_mmu_page *sp)
{
int offset = 0;
- WARN_ON(sp->role.level != PG_LEVEL_4K);
+ WARN_ON_ONCE(sp->role.level != PG_LEVEL_4K);
if (PTTYPE == 32)
offset = sp->role.quadrant << SPTE_LEVEL_BITS;
diff --git a/arch/x86/kvm/mmu/spte.c b/arch/x86/kvm/mmu/spte.c
index 438a86bda9f3..4a599130e9c9 100644
--- a/arch/x86/kvm/mmu/spte.c
+++ b/arch/x86/kvm/mmu/spte.c
@@ -61,7 +61,7 @@ static u64 generation_mmio_spte_mask(u64 gen)
{
u64 mask;
- WARN_ON(gen & ~MMIO_SPTE_GEN_MASK);
+ WARN_ON_ONCE(gen & ~MMIO_SPTE_GEN_MASK);
mask = (gen << MMIO_SPTE_GEN_LOW_SHIFT) & MMIO_SPTE_GEN_LOW_MASK;
mask |= (gen << MMIO_SPTE_GEN_HIGH_SHIFT) & MMIO_SPTE_GEN_HIGH_MASK;
@@ -240,7 +240,7 @@ out:
if ((spte & PT_WRITABLE_MASK) && kvm_slot_dirty_track_enabled(slot)) {
/* Enforced by kvm_mmu_hugepage_adjust. */
- WARN_ON(level > PG_LEVEL_4K);
+ WARN_ON_ONCE(level > PG_LEVEL_4K);
mark_page_dirty_in_slot(vcpu->kvm, slot, gfn);
}
diff --git a/arch/x86/kvm/mmu/tdp_iter.c b/arch/x86/kvm/mmu/tdp_iter.c
index d2eb0d4f8710..5bb09f8d9fc6 100644
--- a/arch/x86/kvm/mmu/tdp_iter.c
+++ b/arch/x86/kvm/mmu/tdp_iter.c
@@ -41,8 +41,8 @@ void tdp_iter_start(struct tdp_iter *iter, struct kvm_mmu_page *root,
{
int root_level = root->role.level;
- WARN_ON(root_level < 1);
- WARN_ON(root_level > PT64_ROOT_MAX_LEVEL);
+ WARN_ON_ONCE(root_level < 1);
+ WARN_ON_ONCE(root_level > PT64_ROOT_MAX_LEVEL);
iter->next_last_level_gfn = next_last_level_gfn;
iter->root_level = root_level;
diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index e54d5f442426..fda32a72b406 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -475,9 +475,9 @@ static void handle_changed_spte(struct kvm *kvm, int as_id, gfn_t gfn,
bool is_leaf = is_present && is_last_spte(new_spte, level);
bool pfn_changed = spte_to_pfn(old_spte) != spte_to_pfn(new_spte);
- WARN_ON(level > PT64_ROOT_MAX_LEVEL);
- WARN_ON(level < PG_LEVEL_4K);
- WARN_ON(gfn & (KVM_PAGES_PER_HPAGE(level) - 1));
+ WARN_ON_ONCE(level > PT64_ROOT_MAX_LEVEL);
+ WARN_ON_ONCE(level < PG_LEVEL_4K);
+ WARN_ON_ONCE(gfn & (KVM_PAGES_PER_HPAGE(level) - 1));
/*
* If this warning were to trigger it would indicate that there was a
@@ -522,9 +522,9 @@ static void handle_changed_spte(struct kvm *kvm, int as_id, gfn_t gfn,
* impact the guest since both the former and current SPTEs
* are nonpresent.
*/
- if (WARN_ON(!is_mmio_spte(old_spte) &&
- !is_mmio_spte(new_spte) &&
- !is_removed_spte(new_spte)))
+ if (WARN_ON_ONCE(!is_mmio_spte(old_spte) &&
+ !is_mmio_spte(new_spte) &&
+ !is_removed_spte(new_spte)))
pr_err("Unexpected SPTE change! Nonpresent SPTEs\n"
"should not be replaced with another,\n"
"different nonpresent SPTE, unless one or both\n"
@@ -661,7 +661,7 @@ static u64 tdp_mmu_set_spte(struct kvm *kvm, int as_id, tdp_ptep_t sptep,
* should be used. If operating under the MMU lock in write mode, the
* use of the removed SPTE should not be necessary.
*/
- WARN_ON(is_removed_spte(old_spte) || is_removed_spte(new_spte));
+ WARN_ON_ONCE(is_removed_spte(old_spte) || is_removed_spte(new_spte));
old_spte = kvm_tdp_mmu_write_spte(sptep, old_spte, new_spte, level);
@@ -709,7 +709,7 @@ static inline bool __must_check tdp_mmu_iter_cond_resched(struct kvm *kvm,
struct tdp_iter *iter,
bool flush, bool shared)
{
- WARN_ON(iter->yielded);
+ WARN_ON_ONCE(iter->yielded);
/* Ensure forward progress has been made before yielding. */
if (iter->next_last_level_gfn == iter->yielded_gfn)
@@ -728,7 +728,7 @@ static inline bool __must_check tdp_mmu_iter_cond_resched(struct kvm *kvm,
rcu_read_lock();
- WARN_ON(iter->gfn > iter->next_last_level_gfn);
+ WARN_ON_ONCE(iter->gfn > iter->next_last_level_gfn);
iter->yielded = true;
}
@@ -1241,7 +1241,7 @@ static bool set_spte_gfn(struct kvm *kvm, struct tdp_iter *iter,
u64 new_spte;
/* Huge pages aren't expected to be modified without first being zapped. */
- WARN_ON(pte_huge(range->arg.pte) || range->start + 1 != range->end);
+ WARN_ON_ONCE(pte_huge(range->arg.pte) || range->start + 1 != range->end);
if (iter->level != PG_LEVEL_4K ||
!is_shadow_present_pte(iter->old_spte))
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-28 12:07:00 +0000