From: Nadav Amit <nadav.amit@gmail.com>
To: "Radim Kr?má?" <rkrcmar@redhat.com>
Cc: "Wu, Feng" <feng.wu@intel.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"eric.auger@linaro.org" <eric.auger@linaro.org>,
"gleb@kernel.org" <gleb@kernel.org>,
"x86@kernel.org" <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
"mingo@redhat.com" <mingo@redhat.com>,
"hpa@zytor.com" <hpa@zytor.com>,
Paolo Bonzini <pbonzini@redhat.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"dwmw2@infradead.org" <dwmw2@infradead.org>,
"jiang.liu@linux.intel.com" <jiang.liu@linux.intel.com>
Subject: Re: [v3 13/26] KVM: Define a new interface kvm_find_dest_vcpu() for VT-d PI
Date: Tue, 20 Jan 2015 23:04:14 +0200 [thread overview]
Message-ID: <6A3B67DA-EDAA-4DE5-BE59-96B693D7BB86@gmail.com> (raw)
In-Reply-To: <20150114165909.GA1283@potion.brq.redhat.com>
Radim Kr?má? <rkrcmar@redhat.com> wrote:
> 2015-01-14 01:27+0000, Wu, Feng:
>>> the new
>>>> hardware even doesn't consider the TPR for lowest priority interrupts
>>> delivery.
>>>
>>> A bold move ... what hardware was the first to do so?
>>
>> I think it was starting with Nehalem.
>
> Thanks, (Could be that QPI can't inform about TPR changes anymore ...)
>
> I played with Linux's TPR on Haswell and found that is has no effect.
Sorry for jumping into the discussion, but doesn’t it depend on
IA32_MISC_ENABLE[23]? This bit disables xTPR messages. On my machine it is
set (probably by the BIOS), but since there is no IA32_MISC_ENABLE is not
locked for changes, the OS can control it.
Nadav
WARNING: multiple messages have this Message-ID (diff)
From: Nadav Amit <nadav.amit-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: "Radim Kr?má?" <rkrcmar-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: "kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"eric.auger-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org"
<eric.auger-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
"gleb-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org"
<gleb-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org"
<x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org"
<iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
"mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org"
<mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org"
<hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>,
Paolo Bonzini <pbonzini-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org"
<tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
"dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org"
<dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
"jiang.liu-VuQAYsv1563Yd54FQh9/CA@public.gmane.org"
<jiang.liu-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Subject: Re: [v3 13/26] KVM: Define a new interface kvm_find_dest_vcpu() for VT-d PI
Date: Tue, 20 Jan 2015 23:04:14 +0200 [thread overview]
Message-ID: <6A3B67DA-EDAA-4DE5-BE59-96B693D7BB86@gmail.com> (raw)
In-Reply-To: <20150114165909.GA1283-KfRq7+sF/6zkZJWtSm8s3NvLeJWuRmrY@public.gmane.org>
Radim Kr?má? <rkrcmar@redhat.com> wrote:
> 2015-01-14 01:27+0000, Wu, Feng:
>>> the new
>>>> hardware even doesn't consider the TPR for lowest priority interrupts
>>> delivery.
>>>
>>> A bold move ... what hardware was the first to do so?
>>
>> I think it was starting with Nehalem.
>
> Thanks, (Could be that QPI can't inform about TPR changes anymore ...)
>
> I played with Linux's TPR on Haswell and found that is has no effect.
Sorry for jumping into the discussion, but doesn’t it depend on
IA32_MISC_ENABLE[23]? This bit disables xTPR messages. On my machine it is
set (probably by the BIOS), but since there is no IA32_MISC_ENABLE is not
locked for changes, the OS can control it.
Nadav
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2015-01-20 21:04 UTC|newest]
Thread overview: 270+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-12 15:14 [v3 00/26] Add VT-d Posted-Interrupts support Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-12 15:14 ` [v3 01/26] genirq: Introduce irq_set_vcpu_affinity() to target an interrupt to a VCPU Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-12 15:14 ` [v3 02/26] iommu: Add new member capability to struct irq_remap_ops Feng Wu
2015-01-28 15:22 ` David Woodhouse
2015-01-28 15:22 ` David Woodhouse
2015-01-29 8:34 ` Wu, Feng
2015-01-29 8:34 ` Wu, Feng
2014-12-12 15:14 ` [v3 03/26] iommu, x86: Define new irte structure for VT-d Posted-Interrupts Feng Wu
2014-12-12 15:14 ` Feng Wu
2015-01-28 15:26 ` David Woodhouse
2015-01-28 15:26 ` David Woodhouse
2014-12-12 15:14 ` [v3 04/26] iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chip Feng Wu
2014-12-12 15:14 ` Feng Wu
2015-01-28 15:26 ` David Woodhouse
2015-01-28 15:26 ` David Woodhouse
2015-01-29 7:55 ` Wu, Feng
2015-01-29 7:55 ` Wu, Feng
2014-12-12 15:14 ` [v3 05/26] x86, irq: Implement irq_set_vcpu_affinity for pci_msi_ir_controller Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-12 15:14 ` [v3 06/26] iommu, x86: No need to migrating irq for VT-d Posted-Interrupts Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-18 14:26 ` Zhang, Yang Z
2014-12-18 14:26 ` Zhang, Yang Z
2014-12-19 1:40 ` Wu, Feng
2014-12-19 1:40 ` Wu, Feng
2014-12-19 1:46 ` Zhang, Yang Z
2014-12-19 1:46 ` Zhang, Yang Z
2014-12-19 11:59 ` Paolo Bonzini
2014-12-19 11:59 ` Paolo Bonzini
2014-12-23 0:37 ` Zhang, Yang Z
2014-12-23 0:37 ` Zhang, Yang Z
2014-12-23 8:47 ` Paolo Bonzini
2014-12-23 8:47 ` Paolo Bonzini
2014-12-23 9:07 ` Wu, Feng
2014-12-23 9:07 ` Wu, Feng
2014-12-23 9:34 ` Paolo Bonzini
2014-12-23 9:34 ` Paolo Bonzini
2014-12-24 1:38 ` Zhang, Yang Z
2014-12-24 1:38 ` Zhang, Yang Z
2014-12-24 2:12 ` Jiang Liu
2014-12-24 2:12 ` Jiang Liu
2014-12-24 2:32 ` Zhang, Yang Z
2014-12-24 2:32 ` Zhang, Yang Z
2014-12-24 3:08 ` Wu, Feng
2014-12-24 3:08 ` Wu, Feng
2014-12-24 4:04 ` Zhang, Yang Z
2014-12-24 4:04 ` Zhang, Yang Z
2014-12-24 4:54 ` Jiang Liu
2014-12-24 4:54 ` Jiang Liu
2015-01-28 15:29 ` David Woodhouse
2015-01-28 15:29 ` David Woodhouse
2014-12-12 15:14 ` [v3 07/26] iommu, x86: Add cap_pi_support() to detect VT-d PI capability Feng Wu
2015-01-28 15:32 ` David Woodhouse
2015-01-28 15:32 ` David Woodhouse
2014-12-12 15:14 ` [v3 08/26] iommu, x86: Add intel_irq_remapping_capability() for Intel Feng Wu
2015-01-28 15:37 ` David Woodhouse
2015-01-28 15:37 ` David Woodhouse
2015-01-29 8:57 ` Wu, Feng
2015-01-29 8:57 ` Wu, Feng
2014-12-12 15:14 ` [v3 09/26] iommu, x86: define irq_remapping_cap() Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-12 15:14 ` [v3 10/26] KVM: change struct pi_desc for VT-d Posted-Interrupts Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-12 15:14 ` [v3 11/26] KVM: Add some helper functions for Posted-Interrupts Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-12 15:14 ` [v3 12/26] KVM: Initialize VT-d Posted-Interrupts Descriptor Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-18 15:19 ` Zhang, Yang Z
2014-12-18 15:19 ` Zhang, Yang Z
2014-12-12 15:14 ` [v3 13/26] KVM: Define a new interface kvm_find_dest_vcpu() for VT-d PI Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-18 14:49 ` Zhang, Yang Z
2014-12-18 14:49 ` Zhang, Yang Z
2014-12-18 16:58 ` Paolo Bonzini
2014-12-18 16:58 ` Paolo Bonzini
2014-12-19 1:13 ` Zhang, Yang Z
2014-12-19 1:30 ` Wu, Feng
2014-12-19 1:30 ` Wu, Feng
2014-12-19 1:30 ` Wu, Feng
2014-12-19 1:30 ` Wu, Feng
2014-12-19 1:47 ` Zhang, Yang Z
2014-12-19 1:47 ` Zhang, Yang Z
2014-12-19 11:59 ` Paolo Bonzini
2014-12-19 11:59 ` Paolo Bonzini
2014-12-19 23:48 ` Wu, Feng
2014-12-19 23:48 ` Wu, Feng
2014-12-20 13:16 ` Paolo Bonzini
2014-12-20 13:16 ` Paolo Bonzini
2014-12-22 4:48 ` Wu, Feng
2014-12-22 4:48 ` Wu, Feng
2014-12-22 9:27 ` Paolo Bonzini
2014-12-22 9:27 ` Paolo Bonzini
2014-12-22 11:04 ` Wu, Feng
2014-12-22 11:04 ` Wu, Feng
2014-12-22 11:06 ` Paolo Bonzini
2014-12-22 11:06 ` Paolo Bonzini
2014-12-22 11:17 ` Wu, Feng
2014-12-22 11:17 ` Wu, Feng
2014-12-22 11:23 ` Paolo Bonzini
2014-12-22 11:23 ` Paolo Bonzini
2014-12-22 14:13 ` Yong Wang
2014-12-22 14:13 ` Yong Wang
2015-01-09 14:54 ` Radim Krčmář
2015-01-09 14:56 ` Paolo Bonzini
2015-01-09 15:12 ` Radim Krčmář
2015-01-09 15:18 ` Paolo Bonzini
2015-01-09 15:47 ` Radim Krčmář
2015-01-13 0:27 ` Wu, Feng
2015-01-13 0:27 ` Wu, Feng
2015-01-13 16:17 ` Radim Kr?má?
2015-01-14 1:27 ` Wu, Feng
2015-01-14 1:27 ` Wu, Feng
2015-01-14 13:02 ` Paolo Bonzini
2015-01-14 13:02 ` Paolo Bonzini
2015-01-14 16:59 ` Radim Kr?má?
2015-01-14 16:59 ` Radim Kr?má?
2015-01-20 21:04 ` Nadav Amit [this message]
2015-01-20 21:04 ` Nadav Amit
2015-01-21 21:16 ` Radim Kr?má?
2015-01-21 21:16 ` Radim Kr?má?
2014-12-12 15:14 ` [v3 14/26] KVM: Get Posted-Interrupts descriptor address from struct kvm_vcpu Feng Wu
2014-12-12 15:14 ` [v3 15/26] KVM: add interfaces to control PI outside vmx Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-12 15:14 ` [v3 16/26] KVM: Make struct kvm_irq_routing_table accessible Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-17 16:17 ` Paolo Bonzini
2014-12-17 16:17 ` Paolo Bonzini
2014-12-19 2:19 ` Wu, Feng
2014-12-19 2:19 ` Wu, Feng
2014-12-19 11:59 ` Paolo Bonzini
2014-12-19 11:59 ` Paolo Bonzini
2014-12-19 23:39 ` Wu, Feng
2014-12-19 23:39 ` Wu, Feng
2014-12-12 15:14 ` [v3 17/26] KVM: make kvm_set_msi_irq() public Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-17 17:32 ` Paolo Bonzini
2014-12-17 17:32 ` Paolo Bonzini
2014-12-12 15:14 ` [v3 18/26] KVM: kvm-vfio: User API for VT-d Posted-Interrupts Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-12 15:14 ` [v3 19/26] KVM: kvm-vfio: implement the VFIO skeleton " Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-12 15:14 ` [v3 20/26] KVM: x86: kvm-vfio: VT-d posted-interrupts setup Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-12 15:14 ` [v3 21/26] x86, irq: Define a global vector for VT-d Posted-Interrupts Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-18 14:54 ` Zhang, Yang Z
2014-12-18 14:54 ` Zhang, Yang Z
2014-12-19 0:52 ` Wu, Feng
2014-12-19 0:52 ` Wu, Feng
2015-01-30 18:18 ` H. Peter Anvin
2015-01-30 18:18 ` H. Peter Anvin
2015-02-02 1:06 ` Wu, Feng
2015-02-02 1:06 ` Wu, Feng
2015-02-23 22:04 ` Marcelo Tosatti
2015-02-23 22:04 ` Marcelo Tosatti
2014-12-12 15:14 ` [v3 22/26] KVM: Define a wakeup worker thread for vCPU Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-12 15:14 ` [v3 23/26] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-17 17:11 ` Paolo Bonzini
2014-12-17 17:11 ` Paolo Bonzini
2014-12-18 3:15 ` Wu, Feng
2014-12-18 3:15 ` Wu, Feng
2014-12-18 8:32 ` Paolo Bonzini
2014-12-18 8:32 ` Paolo Bonzini
2014-12-19 2:09 ` Wu, Feng
2014-12-19 2:09 ` Wu, Feng
2014-12-19 2:09 ` Wu, Feng
2015-02-23 22:21 ` Marcelo Tosatti
2015-02-23 22:21 ` Marcelo Tosatti
2015-03-02 9:12 ` Wu, Feng
2015-03-02 9:12 ` Wu, Feng
2014-12-12 15:14 ` [v3 24/26] KVM: Update Posted-Interrupts Descriptor when vCPU is blocked Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-17 17:09 ` Paolo Bonzini
2014-12-17 17:09 ` Paolo Bonzini
2014-12-18 3:16 ` Wu, Feng
2014-12-18 3:16 ` Wu, Feng
2014-12-18 8:37 ` Paolo Bonzini
2014-12-18 8:37 ` Paolo Bonzini
2014-12-19 2:51 ` Wu, Feng
2014-12-19 2:51 ` Wu, Feng
2014-12-19 2:51 ` Wu, Feng
2015-02-25 21:50 ` Marcelo Tosatti
2015-02-26 8:08 ` Wu, Feng
2015-02-26 23:41 ` Marcelo Tosatti
2015-02-26 23:41 ` Marcelo Tosatti
2015-02-26 23:40 ` Marcelo Tosatti
2015-02-26 23:40 ` Marcelo Tosatti
2015-03-02 13:36 ` Wu, Feng
2015-03-02 13:36 ` Wu, Feng
2015-03-04 12:06 ` Marcelo Tosatti
2015-03-06 6:51 ` Wu, Feng
2015-03-06 6:51 ` Wu, Feng
2015-03-12 1:15 ` Marcelo Tosatti
2015-03-16 11:42 ` Wu, Feng
2015-03-16 11:42 ` Wu, Feng
2015-03-25 23:17 ` Marcelo Tosatti
2015-03-25 23:17 ` Marcelo Tosatti
2015-03-27 6:34 ` Wu, Feng
2015-03-27 6:34 ` Wu, Feng
2015-03-27 19:30 ` Marcelo Tosatti
2015-03-30 4:46 ` Wu, Feng
2015-03-30 4:46 ` Wu, Feng
2015-03-30 23:55 ` Marcelo Tosatti
2015-03-31 1:13 ` Wu, Feng
2015-04-14 7:37 ` Wu, Feng
2015-06-05 21:59 ` Marcelo Tosatti
2015-06-08 1:43 ` Wu, Feng
2014-12-12 15:14 ` [v3 25/26] KVM: Suppress posted-interrupt when 'SN' is set Feng Wu
2014-12-12 15:14 ` Feng Wu
2014-12-17 17:42 ` Paolo Bonzini
2014-12-17 17:42 ` Paolo Bonzini
2014-12-17 17:42 ` Paolo Bonzini
2014-12-17 17:42 ` Paolo Bonzini
2014-12-18 3:14 ` Wu, Feng
2014-12-18 3:14 ` Wu, Feng
2014-12-18 8:38 ` Paolo Bonzini
2014-12-18 8:38 ` Paolo Bonzini
2014-12-18 15:09 ` Zhang, Yang Z
2014-12-18 15:09 ` Zhang, Yang Z
2014-12-19 2:58 ` Wu, Feng
2014-12-19 2:58 ` Wu, Feng
2014-12-19 2:58 ` Wu, Feng
2014-12-19 3:32 ` Zhang, Yang Z
2014-12-19 3:32 ` Zhang, Yang Z
2014-12-19 3:32 ` Zhang, Yang Z
2014-12-19 4:34 ` Wu, Feng
2014-12-19 4:34 ` Wu, Feng
2014-12-19 4:34 ` Wu, Feng
2014-12-19 4:44 ` Zhang, Yang Z
2014-12-19 4:44 ` Zhang, Yang Z
2014-12-19 4:44 ` Zhang, Yang Z
2014-12-19 4:49 ` Wu, Feng
2014-12-19 4:49 ` Wu, Feng
2014-12-19 4:49 ` Wu, Feng
2014-12-19 5:25 ` Zhang, Yang Z
2014-12-19 5:25 ` Zhang, Yang Z
2014-12-19 5:25 ` Zhang, Yang Z
2014-12-19 5:46 ` Wu, Feng
2014-12-19 5:46 ` Wu, Feng
2014-12-19 5:46 ` Wu, Feng
2014-12-19 7:04 ` Zhang, Yang Z
2014-12-19 7:04 ` Zhang, Yang Z
2014-12-19 12:00 ` Paolo Bonzini
2014-12-19 12:00 ` Paolo Bonzini
2014-12-19 23:34 ` Wu, Feng
2014-12-19 23:34 ` Wu, Feng
2014-12-12 15:15 ` [v3 26/26] iommu/vt-d: Add a command line parameter for VT-d posted-interrupts Feng Wu
2014-12-12 15:15 ` Feng Wu
2015-01-28 15:39 ` David Woodhouse
2015-01-28 15:39 ` David Woodhouse
2014-12-16 9:04 ` [v3 00/26] Add VT-d Posted-Interrupts support Wu, Feng
2015-01-06 1:10 ` Wu, Feng
2015-01-06 1:10 ` Wu, Feng
2015-01-09 12:46 ` joro
2015-01-09 13:58 ` Wu, Feng
2015-01-21 2:25 ` Wu, Feng
2015-01-21 2:25 ` Wu, Feng
2015-01-28 3:01 ` Wu, Feng
2015-01-28 3:01 ` Wu, Feng
2015-01-28 3:44 ` Alex Williamson
2015-01-28 3:44 ` Alex Williamson
2015-01-28 4:44 ` Wu, Feng
2015-01-28 4:44 ` Wu, Feng
2014-12-22 16:37 [v3 13/26] KVM: Define a new interface kvm_find_dest_vcpu() for VT-d PI Paolo Bonzini
2014-12-23 0:46 ` Zhang, Yang Z
2014-12-23 0:46 ` Zhang, Yang Z
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