[PATCH 4/9] KVM: x86/mmu: Rename MMU_WARN_ON() to KVM_MMU_WARN_ON()

From: Sean Christopherson
Date: Thu May 11 2023 - 19:59:42 EST


Rename MMU_WARN_ON() to make it super obvious that the assertions are
all about KVM's MMU, not the primary MMU.

Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
arch/x86/kvm/mmu/mmu.c | 4 ++--
arch/x86/kvm/mmu/mmu_internal.h | 4 ++--
arch/x86/kvm/mmu/spte.h | 8 ++++----
arch/x86/kvm/mmu/tdp_mmu.c | 8 ++++----
4 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 2b65a62fb953..240272b10ceb 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -1252,7 +1252,7 @@ static bool spte_clear_dirty(u64 *sptep)
{
u64 spte = *sptep;

- MMU_WARN_ON(!spte_ad_enabled(spte));
+ KVM_MMU_WARN_ON(!spte_ad_enabled(spte));
spte &= ~shadow_dirty_mask;
return mmu_spte_update(sptep, spte);
}
@@ -1728,7 +1728,7 @@ static void kvm_unaccount_mmu_page(struct kvm *kvm, struct kvm_mmu_page *sp)

static void kvm_mmu_free_shadow_page(struct kvm_mmu_page *sp)
{
- MMU_WARN_ON(!is_empty_shadow_page(sp->spt));
+ KVM_MMU_WARN_ON(!is_empty_shadow_page(sp->spt));
hlist_del(&sp->hash_link);
list_del(&sp->link);
free_page((unsigned long)sp->spt);
diff --git a/arch/x86/kvm/mmu/mmu_internal.h b/arch/x86/kvm/mmu/mmu_internal.h
index 9ea80e4d463c..bb1649669bc9 100644
--- a/arch/x86/kvm/mmu/mmu_internal.h
+++ b/arch/x86/kvm/mmu/mmu_internal.h
@@ -9,9 +9,9 @@
#undef MMU_DEBUG

#ifdef MMU_DEBUG
-#define MMU_WARN_ON(x) WARN_ON(x)
+#define KVM_MMU_WARN_ON(x) WARN_ON(x)
#else
-#define MMU_WARN_ON(x) do { } while (0)
+#define KVM_MMU_WARN_ON(x) do { } while (0)
#endif

/* Page table builder macros common to shadow (host) PTEs and guest PTEs. */
diff --git a/arch/x86/kvm/mmu/spte.h b/arch/x86/kvm/mmu/spte.h
index 1279db2eab44..83e6614f3720 100644
--- a/arch/x86/kvm/mmu/spte.h
+++ b/arch/x86/kvm/mmu/spte.h
@@ -265,13 +265,13 @@ static inline bool sp_ad_disabled(struct kvm_mmu_page *sp)

static inline bool spte_ad_enabled(u64 spte)
{
- MMU_WARN_ON(!is_shadow_present_pte(spte));
+ KVM_MMU_WARN_ON(!is_shadow_present_pte(spte));
return (spte & SPTE_TDP_AD_MASK) != SPTE_TDP_AD_DISABLED;
}

static inline bool spte_ad_need_write_protect(u64 spte)
{
- MMU_WARN_ON(!is_shadow_present_pte(spte));
+ KVM_MMU_WARN_ON(!is_shadow_present_pte(spte));
/*
* This is benign for non-TDP SPTEs as SPTE_TDP_AD_ENABLED is '0',
* and non-TDP SPTEs will never set these bits. Optimize for 64-bit
@@ -282,13 +282,13 @@ static inline bool spte_ad_need_write_protect(u64 spte)

static inline u64 spte_shadow_accessed_mask(u64 spte)
{
- MMU_WARN_ON(!is_shadow_present_pte(spte));
+ KVM_MMU_WARN_ON(!is_shadow_present_pte(spte));
return spte_ad_enabled(spte) ? shadow_accessed_mask : 0;
}

static inline u64 spte_shadow_dirty_mask(u64 spte)
{
- MMU_WARN_ON(!is_shadow_present_pte(spte));
+ KVM_MMU_WARN_ON(!is_shadow_present_pte(spte));
return spte_ad_enabled(spte) ? shadow_dirty_mask : 0;
}

diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index 08340219c35a..6ef44d60ba2b 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -1545,8 +1545,8 @@ static bool clear_dirty_gfn_range(struct kvm *kvm, struct kvm_mmu_page *root,
if (!is_shadow_present_pte(iter.old_spte))
continue;

- MMU_WARN_ON(kvm_ad_enabled() &&
- spte_ad_need_write_protect(iter.old_spte));
+ KVM_MMU_WARN_ON(kvm_ad_enabled() &&
+ spte_ad_need_write_protect(iter.old_spte));

if (!(iter.old_spte & dbit))
continue;
@@ -1604,8 +1604,8 @@ static void clear_dirty_pt_masked(struct kvm *kvm, struct kvm_mmu_page *root,
if (!mask)
break;

- MMU_WARN_ON(kvm_ad_enabled() &&
- spte_ad_need_write_protect(iter.old_spte));
+ KVM_MMU_WARN_ON(kvm_ad_enabled() &&
+ spte_ad_need_write_protect(iter.old_spte));

if (iter.level > PG_LEVEL_4K ||
!(mask & (1UL << (iter.gfn - gfn))))
--
2.40.1.606.ga4b1b128d6-goog