Some architectures may decide to do different things during
kvm_arch_vcpu_load depending on the ioctl being executed. For example,
arm64 is about to do significant work in vcpu load/put when running a
vcpu, but it's problematic to do this for any other vcpu ioctl than
KVM_RUN.
Further, while it may be possible to call kvm_arch_vcpu_load() for a
number of non-KVM_RUN ioctls, it makes the KVM/ARM code more difficult
to reason about, especially after my optimization series, because a lot
of things can now happen, where we have to consider if we're really in
the process of running a vcpu or not.
This series will first move the vcpu_load() and vcpu_put() calls in the
arch generic dispatch function into each case of the switch statement
and then, one-by-one, pushed the calls down into the architecture
specific code making the changes for each ioctl as required.
Thanks,
-Christoffer
Christoffer Dall (15):
KVM: Prepare for moving vcpu_load/vcpu_put into arch specific code
KVM: Factor out vcpu->pid adjustment for KVM_RUN
KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_run
KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_get_regs
KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_set_regs
KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_get_sregs
KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_set_sregs
KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_get_mpstate
KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_set_mpstate
KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_translate
KVM: Move vcpu_load to arch-specific
kvm_arch_vcpu_ioctl_set_guest_debug
KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_get_fpu
KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_set_fpu
KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl
KVM: arm/arm64: Avoid vcpu_load for other vcpu ioctls than KVM_RUN
arch/arm64/kvm/guest.c | 17 +++++--
arch/mips/kvm/mips.c | 72 +++++++++++++++++++--------
arch/powerpc/kvm/book3s.c | 38 +++++++++++++-
arch/powerpc/kvm/booke.c | 65 +++++++++++++++++++-----
arch/powerpc/kvm/powerpc.c | 24 ++++++---
arch/s390/kvm/kvm-s390.c | 119 +++++++++++++++++++++++++++++++++++++-------
arch/x86/kvm/x86.c | 121 ++++++++++++++++++++++++++++++++++++++-------
include/linux/kvm_host.h | 2 +
virt/kvm/arm/arm.c | 91 +++++++++++++++++++++++++---------
virt/kvm/kvm_main.c | 43 +++++++---------
10 files changed, 463 insertions(+), 129 deletions(-)
--
2.14.2
--
To unsubscribe from this list: send the line "unsubscribe linux-s390" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
