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| author | Wei Yang <richard.weiyang@gmail.com> | 2018-09-27 08:31:26 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-03-28 17:27:19 +0100 |
| commit | 4d66623cfba0949b2f0d669bd2ae732124c99ded (patch) | |
| tree | c031dcad0bdd4e7e995696f18f09c9c88219f16b /arch/x86/kvm | |
| parent | 711eff3a8fa1d6193139a895524240912011b4dc (diff) | |
| download | linux-4d66623cfba0949b2f0d669bd2ae732124c99ded.tar.gz linux-4d66623cfba0949b2f0d669bd2ae732124c99ded.tar.bz2 linux-4d66623cfba0949b2f0d669bd2ae732124c99ded.zip | |
KVM: x86: remove check on nr_mmu_pages in kvm_arch_commit_memory_region()
* nr_mmu_pages would be non-zero only if kvm->arch.n_requested_mmu_pages is
non-zero.
* nr_mmu_pages is always non-zero, since kvm_mmu_calculate_mmu_pages()
never return zero.
Based on these two reasons, we can merge the two *if* clause and use the
return value from kvm_mmu_calculate_mmu_pages() directly. This simplify
the code and also eliminate the possibility for reader to believe
nr_mmu_pages would be zero.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 2 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 8 |
2 files changed, 3 insertions, 7 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index f6d760dcdb75..5a9981465fbb 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -6028,7 +6028,7 @@ out: /* * Calculate mmu pages needed for kvm. */ -unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm) +unsigned int kvm_mmu_calculate_default_mmu_pages(struct kvm *kvm) { unsigned int nr_mmu_pages; unsigned int nr_pages = 0; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 65e4559eef2f..491e92383da8 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -9429,13 +9429,9 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, const struct kvm_memory_slot *new, enum kvm_mr_change change) { - int nr_mmu_pages = 0; - if (!kvm->arch.n_requested_mmu_pages) - nr_mmu_pages = kvm_mmu_calculate_mmu_pages(kvm); - - if (nr_mmu_pages) - kvm_mmu_change_mmu_pages(kvm, nr_mmu_pages); + kvm_mmu_change_mmu_pages(kvm, + kvm_mmu_calculate_default_mmu_pages(kvm)); /* * Dirty logging tracks sptes in 4k granularity, meaning that large |