From 03916db9348c079d8d214f971cc114bb51c6b869 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 24 Jul 2014 14:21:57 +0200 Subject: [PATCH] Replace NR_VMX_MSR with its definition Using ARRAY_SIZE directly makes it easier to read the code. While touching the code, replace the division by a multiplication in the recently added BUILD_BUG_ON. Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 3397a88..a3845b8 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -823,7 +823,6 @@ static const u32 vmx_msr_index[] = { #endif MSR_EFER, MSR_TSC_AUX, MSR_STAR, }; -#define NR_VMX_MSR ARRAY_SIZE(vmx_msr_index) static inline bool is_page_fault(u32 intr_info) { @@ -4441,7 +4440,7 @@ static int vmx_vcpu_setup(struct vcpu_vmx *vmx) vmx->vcpu.arch.pat = host_pat; } - for (i = 0; i < NR_VMX_MSR; ++i) { + for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i) { u32 index = vmx_msr_index[i]; u32 data_low, data_high; int j = vmx->nmsrs; @@ -7608,7 +7607,8 @@ static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id) goto free_vcpu; vmx->guest_msrs = kmalloc(PAGE_SIZE, GFP_KERNEL); - BUILD_BUG_ON(PAGE_SIZE / sizeof(struct shared_msr_entry) < NR_VMX_MSR); + BUILD_BUG_ON(ARRAY_SIZE(vmx_msr_index) * sizeof(vmx->guest_msrs[0]) + > PAGE_SIZE); err = -ENOMEM; if (!vmx->guest_msrs) { @@ -8960,7 +8960,7 @@ static int __init vmx_init(void) rdmsrl_safe(MSR_EFER, &host_efer); - for (i = 0; i < NR_VMX_MSR; ++i) + for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i) kvm_define_shared_msr(i, vmx_msr_index[i]); vmx_io_bitmap_a = (unsigned long *)__get_free_page(GFP_KERNEL); -- 2.7.4