On 5 August 2014 15:02, Anup Patel <apatel@xxxxxxx> wrote: > On Tue, Aug 5, 2014 at 2:54 PM, Anup Patel <anup.patel@xxxxxxxxxx> wrote: >> This patchset enables PMU virtualization in KVM ARM64. The >> Guest can now directly use PMU available on the host HW. >> >> The virtual PMU IRQ injection for Guest VCPUs is managed by >> small piece of code shared between KVM ARM and KVM ARM64. The >> virtual PMU IRQ number will be based on Guest machine model and >> user space will provide it using set device address vm ioctl. >> >> The second last patch of this series implements full context >> switch of PMU registers which will context switch all PMU >> registers on every KVM world-switch. >> >> The last patch implements a lazy context switch of PMU registers >> which is very similar to lazy debug context switch. >> (Refer, http://lists.infradead.org/pipermail/linux-arm-kernel/2014-July/271040.html) >> >> Also, we reserve last PMU event counter for EL2 mode which >> will not be accessible from Host and Guest EL1 mode. This >> reserved EL2 mode PMU event counter can be used for profiling >> KVM world-switch and other EL2 mode functions. >> >> All testing have been done using KVMTOOL on X-Gene Mustang and >> Foundation v8 Model for both Aarch32 and Aarch64 guest. >> >> Anup Patel (6): >> ARM64: Move PMU register related defines to asm/pmu.h >> ARM64: perf: Re-enable overflow interrupt from interrupt handler >> ARM: perf: Re-enable overflow interrupt from interrupt handler >> ARM/ARM64: KVM: Add common code PMU IRQ routing >> ARM64: KVM: Implement full context switch of PMU registers >> ARM64: KVM: Upgrade to lazy context switch of PMU registers >> >> arch/arm/include/asm/kvm_host.h | 9 + >> arch/arm/include/uapi/asm/kvm.h | 1 + >> arch/arm/kernel/perf_event_v7.c | 8 + >> arch/arm/kvm/arm.c | 6 + >> arch/arm/kvm/reset.c | 4 + >> arch/arm64/include/asm/kvm_asm.h | 39 +++- >> arch/arm64/include/asm/kvm_host.h | 12 ++ >> arch/arm64/include/asm/pmu.h | 44 +++++ >> arch/arm64/include/uapi/asm/kvm.h | 1 + >> arch/arm64/kernel/asm-offsets.c | 2 + >> arch/arm64/kernel/perf_event.c | 40 +--- >> arch/arm64/kvm/Kconfig | 7 + >> arch/arm64/kvm/Makefile | 1 + >> arch/arm64/kvm/hyp-init.S | 15 ++ >> arch/arm64/kvm/hyp.S | 209 +++++++++++++++++++- >> arch/arm64/kvm/reset.c | 4 + >> arch/arm64/kvm/sys_regs.c | 385 +++++++++++++++++++++++++++++++++---- >> include/kvm/arm_pmu.h | 52 +++++ >> virt/kvm/arm/pmu.c | 105 ++++++++++ >> 19 files changed, 870 insertions(+), 74 deletions(-) >> create mode 100644 include/kvm/arm_pmu.h >> create mode 100644 virt/kvm/arm/pmu.c >> >> -- >> 1.7.9.5 >> >> CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, >> is for the sole use of the intended recipient(s) and contains information >> that is confidential and proprietary to Applied Micro Circuits Corporation or its subsidiaries. >> It is to be used solely for the purpose of furthering the parties' business relationship. >> All unauthorized review, use, disclosure or distribution is prohibited. >> If you are not the intended recipient, please contact the sender by reply e-mail >> and destroy all copies of the original message. Please ignore this notice, it accidentally sneaked in. -- Anup >> > > Hi All, > > Please apply attached patch to KVMTOOL on-top-of my > recent KVMTOOL patchset for trying this patchset using > KVMTOOL. > > Regards, > Anup -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
