From: Paolo Bonzini Date: Thu, 7 Jul 2016 12:58:33 +0000 (+0200) Subject: KVM: VMX: introduce vm_{entry,exit}_control_reset_shadow X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8391ce447f18476273331399a7f5930e5494bf46;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git KVM: VMX: introduce vm_{entry,exit}_control_reset_shadow There is no reason to read the entry/exit control fields of the VMCS and immediately write back the same value. Signed-off-by: Paolo Bonzini --- diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 8cda4449a60e..e51503063181 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1672,6 +1672,11 @@ static __always_inline void vmcs_set_bits(unsigned long field, u32 mask) __vmcs_writel(field, __vmcs_readl(field) | mask); } +static inline void vm_entry_controls_reset_shadow(struct vcpu_vmx *vmx) +{ + vmx->vm_entry_controls_shadow = vmcs_read32(VM_ENTRY_CONTROLS); +} + static inline void vm_entry_controls_init(struct vcpu_vmx *vmx, u32 val) { vmcs_write32(VM_ENTRY_CONTROLS, val); @@ -1700,6 +1705,11 @@ static inline void vm_entry_controls_clearbit(struct vcpu_vmx *vmx, u32 val) vm_entry_controls_set(vmx, vm_entry_controls_get(vmx) & ~val); } +static inline void vm_exit_controls_reset_shadow(struct vcpu_vmx *vmx) +{ + vmx->vm_exit_controls_shadow = vmcs_read32(VM_EXIT_CONTROLS); +} + static inline void vm_exit_controls_init(struct vcpu_vmx *vmx, u32 val) { vmcs_write32(VM_EXIT_CONTROLS, val); @@ -10722,8 +10732,8 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason, vmcs12->vm_exit_intr_error_code, KVM_ISA_VMX); - vm_entry_controls_init(vmx, vmcs_read32(VM_ENTRY_CONTROLS)); - vm_exit_controls_init(vmx, vmcs_read32(VM_EXIT_CONTROLS)); + vm_entry_controls_reset_shadow(vmx); + vm_exit_controls_reset_shadow(vmx); vmx_segment_cache_clear(vmx); /* if no vmcs02 cache requested, remove the one we used */