Kernel KVM-PPC virtualization development
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From: "Cédric Le Goater" <clg@kaod.org>
To: linuxppc-dev@lists.ozlabs.org
Cc: "Paul Mackerras" <paulus@samba.org>,
	"Cédric Le Goater" <clg@kaod.org>,
	kvm-ppc@vger.kernel.org
Subject: [PATCH 0/2] KVM: PPC: Book3S HV: XIVE: Improve guest entries and exits
Date: Tue, 20 Jul 2021 13:42:07 +0000	[thread overview]
Message-ID: <20210720134209.256133-1-clg@kaod.org> (raw)

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. 


Cédric 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(-)

-- 
2.31.1

             reply	other threads:[~2021-07-20 13:42 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-20 13:42 Cédric Le Goater [this message]
2021-07-20 13:42 ` [PATCH 1/2] KVM: PPC: Book3S HV: XIVE: Add a 'flags' field Cédric Le Goater
2021-07-20 13:42 ` [PATCH 2/2] KVM: PPC: Book3S HV: XIVE: Add support for automatic save-restore Cédric Le Goater

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