From: anup.patel@linaro.org (Anup Patel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 0/4] In-kernel PSCI v0.2 emulation for KVM ARM/ARM64
Date: Tue, 4 Feb 2014 15:18:12 +0530 [thread overview]
Message-ID: <1391507296-2099-1-git-send-email-anup.patel@linaro.org> (raw)
Currently, KVM ARM/ARM64 only provides in-kernel emulation of Power State
and Coordination Interface (PSCI) v0.1.
This patchset aims at providing newer PSCI v0.2 for KVM ARM/ARM64 VCPUs
such that it does not break current KVM ARM/ARM64 ABI. Also, the patchset
provides emulation of only few PSCI v0.2 functions such as PSCI_VERSION,
CPU_ON, and CPU_OFF. Emulation of other PSCI v0.2 functions will be added
later.
The user space tools (i.e. QEMU or KVMTOOL) will have to explicitly enable
KVM_ARM_VCPU_PSCI_0_2 feature using KVM_ARM_VCPU_INIT ioctl for providing
PSCI v0.2 to VCPUs.
Changlog:
V3:
- Make KVM_ARM_VCPU_PSCI_0_2 feature experiementatl for now so that
it fails for user space till all mandatory PSCI v0.2 functions are
emulated by KVM ARM/ARM64
- Have separate patch for making KVM_ARM_VCPU_PSCI_0_2 feature available
to user space. This patch can be defferred for now.
V2:
- Don't rename PSCI return values KVM_PSCI_RET_NI and KVM_PSCI_RET_INVAL
- Added kvm_psci_version() to get PSCI version available to VCPU
- Fixed grammer in Documentation/virtual/kvm/api.txt
V1:
- Initial RFC PATCH
Anup Patel (4):
ARM/ARM64: KVM: Add support for PSCI v0.2 emulation
KVM: Add capability to advertise PSCI v0.2 support
KVM: Documentation: Add info regarding KVM_ARM_VCPU_PSCI_0_2 feature
ARM/ARM64: KVM: Allow KVM_ARM_VCPU_PSCI_0_2 feature for user space
Documentation/virtual/kvm/api.txt | 2 +
arch/arm/include/asm/kvm_host.h | 2 +-
arch/arm/include/asm/kvm_psci.h | 4 ++
arch/arm/include/uapi/asm/kvm.h | 35 ++++++++++++++-
arch/arm/kvm/arm.c | 1 +
arch/arm/kvm/psci.c | 85 +++++++++++++++++++++++++++++++------
arch/arm64/include/asm/kvm_host.h | 2 +-
arch/arm64/include/asm/kvm_psci.h | 4 ++
arch/arm64/include/uapi/asm/kvm.h | 35 ++++++++++++++-
include/uapi/linux/kvm.h | 1 +
10 files changed, 155 insertions(+), 16 deletions(-)
--
1.7.9.5
next reply other threads:[~2014-02-04 9:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-04 9:48 Anup Patel [this message]
2014-02-04 9:48 ` [PATCH v3 1/4] ARM/ARM64: KVM: Add support for PSCI v0.2 emulation Anup Patel
2014-02-04 9:48 ` [PATCH v3 2/4] KVM: Add capability to advertise PSCI v0.2 support Anup Patel
2014-02-04 9:48 ` [PATCH v3 3/4] KVM: Documentation: Add info regarding KVM_ARM_VCPU_PSCI_0_2 feature Anup Patel
2014-02-04 9:48 ` [PATCH v3 4/4] ARM/ARM64: KVM: Allow KVM_ARM_VCPU_PSCI_0_2 feature for user space Anup Patel
2014-02-04 19:38 ` [PATCH v3 0/4] In-kernel PSCI v0.2 emulation for KVM ARM/ARM64 Christoffer Dall
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