This makes the direction of the conditions consistent with code that is already using WARN_ON.
Signed-off-by: Paolo Bonzini <[email protected]> --- arch/x86/kvm/mmu.c | 42 ++++++++++++++---------------------------- 1 file changed, 14 insertions(+), 28 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 699eab3..550e33d 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -62,30 +62,16 @@ enum { #undef MMU_DEBUG #ifdef MMU_DEBUG +static bool dbg = 0; +module_param(dbg, bool, 0644); #define pgprintk(x...) do { if (dbg) printk(x); } while (0) #define rmap_printk(x...) do { if (dbg) printk(x); } while (0) - +#define MMU_WARN_ON(x) WARN_ON(x) #else - #define pgprintk(x...) do { } while (0) #define rmap_printk(x...) do { } while (0) - -#endif - -#ifdef MMU_DEBUG -static bool dbg = 0; -module_param(dbg, bool, 0644); -#endif - -#ifndef MMU_DEBUG -#define ASSERT(x) do { } while (0) -#else -#define ASSERT(x) \ - if (!(x)) { \ - printk(KERN_WARNING "assertion failed %s:%d: %s\n", \ - __FILE__, __LINE__, #x); \ - } +#define MMU_WARN_ON(x) do { } while (0) #endif #define PTE_PREFETCH_NUM 8 @@ -1533,7 +1519,7 @@ static inline void kvm_mod_used_mmu_pages(struct kvm *kvm, int nr) static void kvm_mmu_free_page(struct kvm_mmu_page *sp) { - ASSERT(is_empty_shadow_page(sp->spt)); + MMU_WARN_ON(!is_empty_shadow_page(sp->spt)); hlist_del(&sp->hash_link); list_del(&sp->link); free_page((unsigned long)sp->spt); @@ -3016,7 +3002,7 @@ static int mmu_alloc_direct_roots(struct kvm_vcpu *vcpu) for (i = 0; i < 4; ++i) { hpa_t root = vcpu->arch.mmu.pae_root[i]; - ASSERT(!VALID_PAGE(root)); + MMU_WARN_ON(VALID_PAGE(root)); spin_lock(&vcpu->kvm->mmu_lock); make_mmu_pages_available(vcpu); sp = kvm_mmu_get_page(vcpu, i << (30 - PAGE_SHIFT), @@ -3054,7 +3040,7 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu) if (vcpu->arch.mmu.root_level == PT64_ROOT_LEVEL) { hpa_t root = vcpu->arch.mmu.root_hpa; - ASSERT(!VALID_PAGE(root)); + MMU_WARN_ON(VALID_PAGE(root)); spin_lock(&vcpu->kvm->mmu_lock); make_mmu_pages_available(vcpu); @@ -3079,7 +3065,7 @@ static int mmu_alloc_shadow_roots(struct kvm_vcpu *vcpu) for (i = 0; i < 4; ++i) { hpa_t root = vcpu->arch.mmu.pae_root[i]; - ASSERT(!VALID_PAGE(root)); + MMU_WARN_ON(VALID_PAGE(root)); if (vcpu->arch.mmu.root_level == PT32E_ROOT_LEVEL) { pdptr = vcpu->arch.mmu.get_pdptr(vcpu, i); if (!is_present_gpte(pdptr)) { @@ -3301,7 +3287,7 @@ static int nonpaging_page_fault(struct kvm_vcpu *vcpu, gva_t gva, if (r) return r; - ASSERT(VALID_PAGE(vcpu->arch.mmu.root_hpa)); + MMU_WARN_ON(!VALID_PAGE(vcpu->arch.mmu.root_hpa)); gfn = gva >> PAGE_SHIFT; @@ -3367,7 +3353,7 @@ static int tdp_page_fault(struct kvm_vcpu *vcpu, gva_t gpa, u32 error_code, int write = error_code & PFERR_WRITE_MASK; bool map_writable; - ASSERT(VALID_PAGE(vcpu->arch.mmu.root_hpa)); + MMU_WARN_ON(!VALID_PAGE(vcpu->arch.mmu.root_hpa)); if (unlikely(error_code & PFERR_RSVD_MASK)) { r = handle_mmio_page_fault(vcpu, gpa, error_code, true); @@ -3655,7 +3641,7 @@ static void paging64_init_context_common(struct kvm_vcpu *vcpu, update_permission_bitmask(vcpu, context, false); update_last_pte_bitmap(vcpu, context); - ASSERT(is_pae(vcpu)); + MMU_WARN_ON(!is_pae(vcpu)); context->page_fault = paging64_page_fault; context->gva_to_gpa = paging64_gva_to_gpa; context->sync_page = paging64_sync_page; @@ -3745,7 +3731,7 @@ void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu) bool smep = kvm_read_cr4_bits(vcpu, X86_CR4_SMEP); struct kvm_mmu *context = vcpu->arch.walk_mmu; - ASSERT(!VALID_PAGE(context->root_hpa)); + MMU_WARN_ON(VALID_PAGE(context->root_hpa)); if (!is_paging(vcpu)) nonpaging_init_context(vcpu, context); @@ -3768,7 +3754,7 @@ void kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, bool execonly) { struct kvm_mmu *context = vcpu->arch.walk_mmu; - ASSERT(!VALID_PAGE(context->root_hpa)); + MMU_WARN_ON(VALID_PAGE(context->root_hpa)); context->shadow_root_level = kvm_x86_ops->get_tdp_level(); @@ -4230,7 +4216,7 @@ int kvm_mmu_create(struct kvm_vcpu *vcpu) void kvm_mmu_setup(struct kvm_vcpu *vcpu) { - ASSERT(!VALID_PAGE(vcpu->arch.mmu.root_hpa)); + MMU_WARN_ON(VALID_PAGE(vcpu->arch.mmu.root_hpa)); init_kvm_mmu(vcpu); } -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
