From: "Radim Krčmář" <rkrcmar-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: "Wu, Feng" <feng.wu-ral2JQCrhuEAvxtiuMwx3w@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>,
"mtosatti-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org"
<mtosatti-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org"
<iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Paolo Bonzini <pbonzini-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH v8 03/13] KVM: Define a new interface kvm_intr_is_single_vcpu()
Date: Fri, 18 Sep 2015 18:16:32 +0200 [thread overview]
Message-ID: <20150918161631.GA27908@potion.brq.redhat.com> (raw)
In-Reply-To: <E959C4978C3B6342920538CF579893F00271A691-0J0gbvR4kTg/UvCtAeCM4rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-09-17 23:18+0000, Wu, Feng:
>> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
>> On 17/09/2015 17:58, Radim Krčmář wrote:
>>> xAPIC address are only 8 bit long so they always get delivered to x2APIC
>>> cluster 0, where first 16 bits work like xAPIC flat logical mode.
>>
>> Ok, I was wondering whether this was the correct interpretation. Thanks!
>
> Paolo, I don't think Radim clarify your concern, right? Since mda is 8-bit, it
> is wrong with mda >> 16, this is your concern, right?
In case it was: mda is u32 so the bitshift is defined by C.
(xAPIC destinations in KVM's x2APIC mode are stored in lowest 8 bits of
mda, hence the cluster is always 0.)
Or am I still missing the point?
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next prev parent reply other threads:[~2015-09-18 16:16 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-16 8:49 [PATCH v8 00/13] Add VT-d Posted-Interrupts support Feng Wu
[not found] ` <1442393409-2623-1-git-send-email-feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-09-16 8:49 ` [PATCH v8 01/13] KVM: Extend struct pi_desc for VT-d Posted-Interrupts Feng Wu
2015-09-16 8:49 ` [PATCH v8 02/13] KVM: Add some helper functions for Posted-Interrupts Feng Wu
2015-09-16 8:49 ` [PATCH v8 03/13] KVM: Define a new interface kvm_intr_is_single_vcpu() Feng Wu
[not found] ` <1442393409-2623-4-git-send-email-feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-09-16 9:23 ` Paolo Bonzini
[not found] ` <55F934F5.7040605-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-17 3:17 ` Wu, Feng
2015-09-17 9:42 ` Paolo Bonzini
[not found] ` <55FA8AED.6090700-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-17 13:36 ` Wu, Feng
[not found] ` <E959C4978C3B6342920538CF579893F002718968-0J0gbvR4kTg/UvCtAeCM4rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-09-17 14:24 ` Paolo Bonzini
2015-09-17 15:58 ` Radim Krčmář
[not found] ` <20150917155821.GB2573-KfRq7+sF/6zkZJWtSm8s3NvLeJWuRmrY@public.gmane.org>
2015-09-17 16:00 ` Paolo Bonzini
[not found] ` <55FAE395.4000008-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-17 23:18 ` Wu, Feng
[not found] ` <E959C4978C3B6342920538CF579893F00271A691-0J0gbvR4kTg/UvCtAeCM4rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-09-18 16:16 ` Radim Krčmář [this message]
[not found] ` <20150918161631.GA27908-KfRq7+sF/6zkZJWtSm8s3NvLeJWuRmrY@public.gmane.org>
2015-09-18 16:17 ` Paolo Bonzini
[not found] ` <55FACD35.1030602-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-17 23:15 ` Wu, Feng
2015-09-16 8:50 ` [PATCH v8 04/13] KVM: Make struct kvm_irq_routing_table accessible Feng Wu
2015-09-16 8:50 ` [PATCH v8 05/13] KVM: make kvm_set_msi_irq() public Feng Wu
2015-09-16 8:50 ` [PATCH v8 06/13] vfio: Register/unregister irq_bypass_producer Feng Wu
2015-09-16 8:50 ` [PATCH v8 07/13] KVM: x86: Update IRTE for posted-interrupts Feng Wu
2015-09-16 8:50 ` [PATCH v8 08/13] KVM: Implement IRQ bypass consumer callbacks for x86 Feng Wu
2015-09-16 8:50 ` [PATCH v8 09/13] KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd' Feng Wu
[not found] ` <1442393409-2623-10-git-send-email-feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-09-16 9:27 ` Paolo Bonzini
[not found] ` <55F935E9.6070707-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-09-17 1:51 ` Wu, Feng
[not found] ` <E959C4978C3B6342920538CF579893F002716E32-0J0gbvR4kTg/UvCtAeCM4rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-09-17 9:38 ` Paolo Bonzini
2015-09-16 8:50 ` [PATCH v8 10/13] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted Feng Wu
[not found] ` <1442393409-2623-11-git-send-email-feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-09-16 9:29 ` Paolo Bonzini
2015-09-16 8:50 ` [PATCH v8 11/13] KVM: Update Posted-Interrupts Descriptor when vCPU is blocked Feng Wu
[not found] ` <1442393409-2623-12-git-send-email-feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-09-16 9:32 ` Paolo Bonzini
2015-09-16 8:50 ` [PATCH v8 12/13] KVM: Warn if 'SN' is set during posting interrupts by software Feng Wu
[not found] ` <1442393409-2623-13-git-send-email-feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-09-16 9:32 ` Paolo Bonzini
2015-09-16 8:50 ` [PATCH v8 13/13] iommu/vt-d: Add a command line parameter for VT-d posted-interrupts Feng Wu
2015-09-16 9:34 ` [PATCH v8 00/13] Add VT-d Posted-Interrupts support Paolo Bonzini
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