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Message-Id: <20200605213853.14959-20-sean.j.christopherson@intel.com>
Date: Fri, 5 Jun 2020 14:38:51 -0700
From: Sean Christopherson <sean.j.christopherson@...el.com>
To: Marc Zyngier <maz@...nel.org>, Paul Mackerras <paulus@...abs.org>,
Christian Borntraeger <borntraeger@...ibm.com>,
Janosch Frank <frankja@...ux.ibm.com>,
Paolo Bonzini <pbonzini@...hat.com>
Cc: James Morse <james.morse@....com>,
Julien Thierry <julien.thierry.kdev@...il.com>,
Suzuki K Poulose <suzuki.poulose@....com>,
David Hildenbrand <david@...hat.com>,
Cornelia Huck <cohuck@...hat.com>,
Claudio Imbrenda <imbrenda@...ux.ibm.com>,
Sean Christopherson <sean.j.christopherson@...el.com>,
Vitaly Kuznetsov <vkuznets@...hat.com>,
Wanpeng Li <wanpengli@...cent.com>,
Jim Mattson <jmattson@...gle.com>,
Joerg Roedel <joro@...tes.org>,
linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
linux-mips@...r.kernel.org, kvm@...r.kernel.org,
kvm-ppc@...r.kernel.org, linux-kernel@...r.kernel.org,
Peter Feiner <pfeiner@...gle.com>,
Peter Shier <pshier@...gle.com>,
Junaid Shahid <junaids@...gle.com>,
Ben Gardon <bgardon@...gle.com>,
Christoffer Dall <christoffer.dall@....com>
Subject: [PATCH 19/21] 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@...el.com>
---
arch/mips/kvm/mmu.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/arch/mips/kvm/mmu.c b/arch/mips/kvm/mmu.c
index 7dad7a293eae..94562c54b930 100644
--- 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;
--
2.26.0
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