KVM: MIPS: Drop @max param from mmu_topup_memory_cache()

Replace the @max param in mmu_topup_memory_cache() and instead use
ARRAY_SIZE() to terminate the loop to fill the cache.  This removes a
BUG_ON() and sets the stage for moving MIPS to the common memory cache
implementation.

No functional change intended.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200703023545.8771-20-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/mips/kvm/mmu.c b/arch/mips/kvm/mmu.c
index 49bd160..d1f148d 100644 (file)
--- a/arch/mips/kvm/mmu.c
+++ b/arch/mips/kvm/mmu.c
@@ -25,15 +25,13 @@
 #define KVM_MMU_CACHE_MIN_PAGES 2
 #endif
 
-static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *cache,
-                                 int min, int max)
+static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *cache, int min)
 {
        void *page;
 
-       BUG_ON(max > KVM_NR_MEM_OBJS);
        if (cache->nobjs >= min)
                return 0;
-       while (cache->nobjs < max) {
+       while (cache->nobjs < ARRAY_SIZE(cache->objects)) {
                page = (void *)__get_free_page(GFP_KERNEL);
                if (!page)
                        return -ENOMEM;
@@ -711,8 +709,7 @@ static int kvm_mips_map_page(struct kvm_vcpu *vcpu, unsigned long gpa,
                goto out;
 
        /* We need a minimum of cached pages ready for page table creation */
-       err = mmu_topup_memory_cache(memcache, KVM_MMU_CACHE_MIN_PAGES,
-                                    KVM_NR_MEM_OBJS);
+       err = mmu_topup_memory_cache(memcache, KVM_MMU_CACHE_MIN_PAGES);
        if (err)
                goto out;
 
@@ -796,8 +793,7 @@ static pte_t *kvm_trap_emul_pte_for_gva(struct kvm_vcpu *vcpu,
        int ret;
 
        /* We need a minimum of cached pages ready for page table creation */
-       ret = mmu_topup_memory_cache(memcache, KVM_MMU_CACHE_MIN_PAGES,
-                                    KVM_NR_MEM_OBJS);
+       ret = mmu_topup_memory_cache(memcache, KVM_MMU_CACHE_MIN_PAGES);
        if (ret)
                return NULL;