The various syscall-related MSRs are fairly expensive to switch. Currently
we switch them on every vcpu preemption, which is far too often:
- if we're switching to a kernel thread (idle task, threaded interrupt,
kernel-mode virtio server (vhost-net), for example) and back, then
there's no
On Wed, Sep 16, 2009 at 03:45:33PM +0300, Avi Kivity wrote:
The various syscall-related MSRs are fairly expensive to switch. Currently
we switch them on every vcpu preemption, which is far too often:
- if we're switching to a kernel thread (idle task, threaded interrupt,
kernel-mode
On 09/17/2009 12:21 AM, Marcelo Tosatti wrote:
+static struct kvm_shared_msrs_global __read_mostly shared_msrs_global;
Does this assume the MSRs in question are consistent across CPUs?
Yes. And they are.
I guess that is not true with arch_prctl(ARCH_SET_GS/ARCH_GET_GS) ?
