[PATCH 0/2] KVM: PPC: Book3S HV: XIVE: Improve guest entries and exits

Cédric Le Goater <[email protected]> Tue, 20 Jul 2021 13:42:07 +0000

Newsgroups	org.kernel.vger.kvm-ppc,org.ozlabs.lists.linuxppc-dev
Message-ID	<[email protected]>

The XIVE interrupt controller on P10 can automatically save and
restore the state of the interrupt registers under the internal NVP
structure representing the VCPU. This saves a costly store/load in
guest entries and exits.

Thanks,

C. 


CÃ©dric Le Goater (2):
  KVM: PPC: Book3S HV: XIVE: Add a 'flags' field
  KVM: PPC: Book3S HV: XIVE: Add support for automatic save-restore

 arch/powerpc/include/asm/xive-regs.h  |  3 ++
 arch/powerpc/include/asm/xive.h       |  1 +
 arch/powerpc/kvm/book3s_xive.h        | 11 +++++-
 arch/powerpc/kvm/book3s_xive.c        | 53 +++++++++++++++++++++------
 arch/powerpc/kvm/book3s_xive_native.c | 21 ++++++++---
 arch/powerpc/sysdev/xive/native.c     | 10 +++++
 6 files changed, 82 insertions(+), 17 deletions(-)

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