Messages in this thread | | | Date | Wed, 19 Sep 2012 20:22:47 +0300 | From | Avi Kivity <> | Subject | Re: [PATCH 3/6] x86, kvm: use kernel_fpu_begin/end() in kvm_load/put_guest_fpu() |
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On 09/19/2012 08:18 PM, Suresh Siddha wrote:
> These routines (kvm_load/put_guest_fpu()) are already called with > preemption disabled but as you mentioned, we don't want the preemption > to be disabled completely between the kvm_load_guest_fpu() and > kvm_put_guest_fpu(). > > Also KVM already has the preempt notifier which is doing the > kvm_put_guest_fpu(), so something like the appended should address this. > I will test this shortly. >
Note, we could also go in a different direction and make kernel_fpu_begin() use preempt notifiers and thus make its users preemptible. But that's for a separate patchset.
-- error compiling committee.c: too many arguments to function
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