From: riel@redhat.com
To: pbonzini@redhat.com
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
david@redhat.com, borntraeger@de.ibm.com, tglx@linutronix.de,
rkrcmar@redhat.com
Subject: [PATCH v2 0/2] x86,kvm: move qemu/guest FPU switching out to kvm_arch_vcpu_ioctl_run
Date: Tue, 14 Nov 2017 16:54:22 -0500 [thread overview]
Message-ID: <20171114215424.32214-1-riel@redhat.com> (raw)
This code moves FPU handling from the non-preemptible part of running
a VCPU, way further out into the KVM_RUN ioctl handling. That way there
is no need to continuously save and load the qemu FPU user context
every time a VCPU context switches, or goes to sleep in the host kernel.
v2:
- move FPU switching out to kvm_arch_vcpu_ioctl_run (David Hildenbrand)
- remove fpu handling from arch/x86/kvm/emulator.c (no longer needed)
next reply other threads:[~2017-11-14 21:54 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-14 21:54 riel [this message]
2017-11-14 21:54 ` [PATCH 1/2] x86,kvm: move qemu/guest FPU switching out to vcpu_run riel
2017-11-15 0:47 ` Wanpeng Li
2017-11-15 3:03 ` Rik van Riel
2017-11-15 4:33 ` Wanpeng Li
2017-11-15 14:40 ` Rik van Riel
2017-11-16 5:54 ` Wanpeng Li
2017-11-15 6:53 ` quan.xu04
2017-11-15 14:43 ` Rik van Riel
2017-11-15 15:09 ` Paolo Bonzini
2017-11-16 2:50 ` Quan Xu
2017-11-16 4:21 ` Rik van Riel
2017-11-16 5:06 ` Quan Xu
2017-11-16 10:21 ` Paolo Bonzini
2017-11-16 12:12 ` Quan Xu
2017-11-16 12:18 ` Paolo Bonzini
2017-11-16 13:35 ` Quan Xu
2017-11-16 13:39 ` Paolo Bonzini
[not found] ` <d67cef62-3165-50cd-36e8-be7c555dc79e@gmail.com>
2017-11-16 17:50 ` Paolo Bonzini
2017-11-17 2:54 ` Quan Xu
2017-11-14 21:54 ` [PATCH 2/2] x86,kvm: remove KVM emulator get_fpu / put_fpu riel
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