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[Qemu-devel] [RFC PATCH V4 3/6] target-arm: Enable KVM_ARM_VCPU_PSCI_0_2
From: |
Pranavkumar Sawargaonkar |
Subject: |
[Qemu-devel] [RFC PATCH V4 3/6] target-arm: Enable KVM_ARM_VCPU_PSCI_0_2 feature when possible |
Date: |
Mon, 5 May 2014 14:27:11 +0530 |
Latest linux kernel supports in-kernel emulation of PSCI v0.2 but
to enable it we need to select KVM_ARM_VCPU_PSCI_0_2 feature using
KVM_ARM_VCPU_INIT ioctl.
Also, we can use KVM_ARM_VCPU_PSCI_0_2 feature for VCPU only when
linux kernel has KVM_CAP_ARM_PSCI_0_2 capability.
This patch updates kvm_arch_init_vcpu() to enable KVM_ARM_VCPU_PSCI_0_2
feature for VCPU when KVM ARM/ARM64 has KVM_CAP_ARM_PSCI_0_2 capability.
Signed-off-by: Pranavkumar Sawargaonkar <address@hidden>
Signed-off-by: Anup Patel <address@hidden>
---
target-arm/kvm32.c | 5 ++++-
target-arm/kvm64.c | 5 ++++-
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/target-arm/kvm32.c b/target-arm/kvm32.c
index a690d99..cd9ac03 100644
--- a/target-arm/kvm32.c
+++ b/target-arm/kvm32.c
@@ -182,7 +182,10 @@ int kvm_arch_init_vcpu(CPUState *cs)
init.target = cpu->kvm_target;
memset(init.features, 0, sizeof(init.features));
if (cpu->start_powered_off) {
- init.features[0] = 1 << KVM_ARM_VCPU_POWER_OFF;
+ init.features[0] |= 1 << KVM_ARM_VCPU_POWER_OFF;
+ }
+ if (kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PSCI_0_2)) {
+ init.features[0] |= 1 << KVM_ARM_VCPU_PSCI_0_2;
}
ret = kvm_vcpu_ioctl(cs, KVM_ARM_VCPU_INIT, &init);
if (ret) {
diff --git a/target-arm/kvm64.c b/target-arm/kvm64.c
index e115879..bc6cd74 100644
--- a/target-arm/kvm64.c
+++ b/target-arm/kvm64.c
@@ -90,7 +90,10 @@ int kvm_arch_init_vcpu(CPUState *cs)
init.target = cpu->kvm_target;
memset(init.features, 0, sizeof(init.features));
if (cpu->start_powered_off) {
- init.features[0] = 1 << KVM_ARM_VCPU_POWER_OFF;
+ init.features[0] |= 1 << KVM_ARM_VCPU_POWER_OFF;
+ }
+ if (kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PSCI_0_2)) {
+ init.features[0] |= 1 << KVM_ARM_VCPU_PSCI_0_2;
}
ret = kvm_vcpu_ioctl(cs, KVM_ARM_VCPU_INIT, &init);
--
1.7.9.5
- [Qemu-devel] [RFC PATCH V4 0/6] PSCI v0.2 support for KVM ARM/ARM64, Pranavkumar Sawargaonkar, 2014/05/05
- [Qemu-devel] [RFC PATCH V4 1/6] linux-headers: Update KVM headers from linux-3.16-rc1, Pranavkumar Sawargaonkar, 2014/05/05
- [Qemu-devel] [RFC PATCH V4 2/6] kvm: Handle exit reason KVM_EXIT_SYSTEM_EVENT, Pranavkumar Sawargaonkar, 2014/05/05
- [Qemu-devel] [RFC PATCH V4 3/6] target-arm: Enable KVM_ARM_VCPU_PSCI_0_2 feature when possible,
Pranavkumar Sawargaonkar <=
- [Qemu-devel] [RFC PATCH V4 4/6] hw/arm/virt: Use PSCI v0.2 compatible when kernel supports it, Pranavkumar Sawargaonkar, 2014/05/05
- Re: [Qemu-devel] [RFC PATCH V4 4/6] hw/arm/virt: Use PSCI v0.2 compatible when kernel supports it, Rob Herring, 2014/05/05
- Re: [Qemu-devel] [RFC PATCH V4 4/6] hw/arm/virt: Use PSCI v0.2 compatible when kernel supports it, Rob Herring, 2014/05/05
- Re: [Qemu-devel] [RFC PATCH V4 4/6] hw/arm/virt: Use PSCI v0.2 compatible when kernel supports it, Peter Maydell, 2014/05/05
- Re: [Qemu-devel] [RFC PATCH V4 4/6] hw/arm/virt: Use PSCI v0.2 compatible when kernel supports it, Pranavkumar Sawargaonkar, 2014/05/06
- Re: [Qemu-devel] [RFC PATCH V4 4/6] hw/arm/virt: Use PSCI v0.2 compatible when kernel supports it, Rob Herring, 2014/05/06
- Re: [Qemu-devel] [RFC PATCH V4 4/6] hw/arm/virt: Use PSCI v0.2 compatible when kernel supports it, Peter Maydell, 2014/05/06