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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-07-02 19:35:41 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-07-09 13:29:43 -0400 |
| commit | e539451b7e7a6cb0248b1e1b1baf8ed40ce16bac (patch) | |
| tree | 2cde41d0fb5c9ee7e360b640df6c59a49d0e0e53 /arch/arm64/kvm/arm.c | |
| parent | 61ffb3a50c4402e17ead1257914ee98fd8c6f2f8 (diff) | |
| download | linux-e539451b7e7a6cb0248b1e1b1baf8ed40ce16bac.tar.gz linux-e539451b7e7a6cb0248b1e1b1baf8ed40ce16bac.tar.bz2 linux-e539451b7e7a6cb0248b1e1b1baf8ed40ce16bac.zip | |
KVM: arm64: Use common code's approach for __GFP_ZERO with memory caches
Add a "gfp_zero" member to arm64's 'struct kvm_mmu_memory_cache' to make
the struct and its usage compatible with the common 'struct
kvm_mmu_memory_cache' in linux/kvm_host.h. This will minimize code
churn when arm64 moves to the common implementation in a future patch, at
the cost of temporarily having somewhat silly code.
Note, GFP_PGTABLE_USER is equivalent to GFP_KERNEL_ACCOUNT | GFP_ZERO:
#define GFP_PGTABLE_USER (GFP_PGTABLE_KERNEL | __GFP_ACCOUNT)
|
-> #define GFP_PGTABLE_KERNEL (GFP_KERNEL | __GFP_ZERO)
== GFP_KERNEL | __GFP_ACCOUNT | __GFP_ZERO
versus
#define GFP_KERNEL_ACCOUNT (GFP_KERNEL | __GFP_ACCOUNT)
with __GFP_ZERO explicitly OR'd in
== GFP_KERNEL | __GFP_ACCOUNT | __GFP_ZERO
No functional change intended.
Tested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200703023545.8771-18-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/arm64/kvm/arm.c')
| -rw-r--r-- | arch/arm64/kvm/arm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 90cb90561446..1016635b3782 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -270,6 +270,8 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu) vcpu->arch.target = -1; bitmap_zero(vcpu->arch.features, KVM_VCPU_MAX_FEATURES); + vcpu->arch.mmu_page_cache.gfp_zero = __GFP_ZERO; + /* Set up the timer */ kvm_timer_vcpu_init(vcpu); |