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| author | Alexander Graf <agraf@suse.de> | 2013-01-04 18:12:48 +0100 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-01-10 13:42:31 +0100 |
| commit | 1c810636556c8d53a37406b34a64d9b9b0161aa6 (patch) | |
| tree | b163d427c9dcff066330d4ac13de529a9831a044 /arch/powerpc/include | |
| parent | 37ecb257f68ce4fb7c7048a1123bbcbbe36d9575 (diff) | |
| download | blackbird-op-linux-1c810636556c8d53a37406b34a64d9b9b0161aa6.tar.gz blackbird-op-linux-1c810636556c8d53a37406b34a64d9b9b0161aa6.zip | |
KVM: PPC: BookE: Implement EPR exit
The External Proxy Facility in FSL BookE chips allows the interrupt
controller to automatically acknowledge an interrupt as soon as a
core gets its pending external interrupt delivered.
Today, user space implements the interrupt controller, so we need to
check on it during such a cycle.
This patch implements logic for user space to enable EPR exiting,
disable EPR exiting and EPR exiting itself, so that user space can
acknowledge an interrupt when an external interrupt has successfully
been delivered into the guest vcpu.
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_host.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/kvm_ppc.h | 9 |
2 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index ab49c6cf891c..8a72d59467eb 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -520,6 +520,8 @@ struct kvm_vcpu_arch { u8 sane; u8 cpu_type; u8 hcall_needed; + u8 epr_enabled; + u8 epr_needed; u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */ diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index 5f5f69abd281..493630e209c8 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.h @@ -264,6 +264,15 @@ static inline void kvm_linear_init(void) {} #endif +static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) +{ +#ifdef CONFIG_KVM_BOOKE_HV + mtspr(SPRN_GEPR, epr); +#elif defined(CONFIG_BOOKE) + vcpu->arch.epr = epr; +#endif +} + int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, struct kvm_config_tlb *cfg); int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, |
