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| author | Paolo Bonzini <pbonzini@redhat.com> | 2017-05-09 11:50:01 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-05-09 11:50:01 +0200 |
| commit | 4415b335282591e76762cd9e6dc60932a7595fc3 (patch) | |
| tree | 07ba1eb24f8d44baeb07916351d4819026feccae /arch/powerpc/kernel | |
| parent | 3bed8888edc8f60d734c44fdcdb7c6abd5e2d02e (diff) | |
| parent | fb7dcf723dd2cb1d5d8f2f49c3023130938848e3 (diff) | |
| download | lwn-4415b335282591e76762cd9e6dc60932a7595fc3.tar.gz lwn-4415b335282591e76762cd9e6dc60932a7595fc3.zip | |
Merge branch 'kvm-ppc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD
The main thing here is a new implementation of the in-kernel
XICS interrupt controller emulation for POWER9 machines, from Ben
Herrenschmidt.
POWER9 has a new interrupt controller called XIVE (eXternal Interrupt
Virtualization Engine) which is able to deliver interrupts directly
to guest virtual CPUs in hardware without hypervisor intervention.
With this new code, the guest still sees the old XICS interface but
performance is better because the XICS emulation in the host uses the
XIVE directly rather than going through a XICS emulation in firmware.
Conflicts:
arch/powerpc/kernel/cpu_setup_power.S [cherry-picked fix]
arch/powerpc/kvm/book3s_xive.c [include asm/debugfs.h]
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/asm-offsets.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 439c257dec4a..709e23425317 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -634,6 +634,8 @@ int main(void) HSTATE_FIELD(HSTATE_KVM_VCPU, kvm_vcpu); HSTATE_FIELD(HSTATE_KVM_VCORE, kvm_vcore); HSTATE_FIELD(HSTATE_XICS_PHYS, xics_phys); + HSTATE_FIELD(HSTATE_XIVE_TIMA_PHYS, xive_tima_phys); + HSTATE_FIELD(HSTATE_XIVE_TIMA_VIRT, xive_tima_virt); HSTATE_FIELD(HSTATE_SAVED_XIRR, saved_xirr); HSTATE_FIELD(HSTATE_HOST_IPI, host_ipi); HSTATE_FIELD(HSTATE_PTID, ptid); @@ -719,6 +721,14 @@ int main(void) OFFSET(VCPU_HOST_MAS6, kvm_vcpu, arch.host_mas6); #endif +#ifdef CONFIG_KVM_XICS + DEFINE(VCPU_XIVE_SAVED_STATE, offsetof(struct kvm_vcpu, + arch.xive_saved_state)); + DEFINE(VCPU_XIVE_CAM_WORD, offsetof(struct kvm_vcpu, + arch.xive_cam_word)); + DEFINE(VCPU_XIVE_PUSHED, offsetof(struct kvm_vcpu, arch.xive_pushed)); +#endif + #ifdef CONFIG_KVM_EXIT_TIMING OFFSET(VCPU_TIMING_EXIT_TBU, kvm_vcpu, arch.timing_exit.tv32.tbu); OFFSET(VCPU_TIMING_EXIT_TBL, kvm_vcpu, arch.timing_exit.tv32.tbl); |