Messages in this thread | | | From | Andy Lutomirski <> | Date | Mon, 12 Mar 2018 15:42:23 +0000 | Subject | Re: [PATCH 3/3] x86/kvm/vmx: avoid expensive rdmsr for MSR_GS_BASE |
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On Mon, Mar 12, 2018 at 2:03 PM, Vitaly Kuznetsov <vkuznets@redhat.com> wrote: > vmx_save_host_state() is only called from kvm_arch_vcpu_ioctl_run() so > the context is pretty well defined and as we're past 'swapgs' MSR_GS_BASE > should contain kernel's GS base which we point to irq_stack_union. > > Add new kernelmode_gs_base() API, irq_stack_union needs to be exported > as KVM can be build as module. >
Acked-by: Andy Lutomirski <luto@kernel.org>
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