[PATCH] kvm/arm64 : reduce the size of kvm_vcpu
From: Peng Hao <hidden>
Date: 2018-12-24 10:21:28
Also in:
kvmarm, lkml
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
According to adjust the position of variables in kvm_vcpu_arch, the size of kvm_vcpu can reduce 16 bytes. before: cat /proc/slabinfo | grep kvm kvm_vcpu 252 252 9120 28 ... after: cat /proc/slabinfo | grep kvm kvm_vcpu 28 28 9104 28 ... Signed-off-by: Peng Hao <redacted> --- arch/arm64/include/asm/kvm_host.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 52fbc82..e805b7e 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h@@ -287,16 +287,17 @@ struct kvm_vcpu_arch { /* Cache some mmu pages needed inside spinlock regions */ struct kvm_mmu_memory_cache mmu_page_cache; + /* Virtual SError ESR to restore when HCR_EL2.VSE is set */ + u64 vsesr_el2; + + DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES); + /* Target CPU and feature flags */ int target; - DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES); /* Detect first run of a vcpu */ bool has_run_once; - /* Virtual SError ESR to restore when HCR_EL2.VSE is set */ - u64 vsesr_el2; - /* True when deferrable sysregs are loaded on the physical CPU, * see kvm_vcpu_load_sysregs and kvm_vcpu_put_sysregs. */ bool sysregs_loaded_on_cpu;
--
1.8.3.1
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