[H][PATCH 0/1] KVM: PPC: Book3S HV: Save and restore FSCR in the P9 path (LP: 1920784)

frank.heimes at canonical.com frank.heimes at canonical.com
Wed Mar 24 14:38:04 UTC 2021


BugLink: https://bugs.launchpad.net/bugs/1920784

The Facility Status and Control Register is a privileged SPR that
defines the availability of some features in problem state. Since it
can be written by the guest, we must restore it to the previous host
value after guest exit.

That fixes a problem with qemu-system-ppc64le with kvm acceleration active.

Fabiano Rosas (1):
  KVM: PPC: Book3S HV: Save and restore FSCR in the P9 path

 arch/powerpc/kvm/book3s_hv.c | 4 ++++
 1 file changed, 4 insertions(+)

-- 
2.25.1




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