From: Avi Kivity <avi@redhat.com>
To: Avi Kivity <avi@redhat.com>, Sheng Yang <sheng@linux.intel.com>,
kvm@vger.kernel.org
Subject: Re: [PATCH 09/10] KVM: Enable MSI for device assignment
Date: Tue, 04 Nov 2008 16:35:19 +0200 [thread overview]
Message-ID: <49105DA7.3020204@redhat.com> (raw)
In-Reply-To: <20081104135853.GC18696@yukikaze>
Sheng Yang wrote:
>> In fact, it's not just for pci. We could msi-enable e1000 and get
>> improved performance there as well.
>>
>
> E1000? Don't understand... Sounds like INTx->MSI...
>
There are msi-capable e1000 cards. If we upgrade qemu's e1000 to
support msi, and if the guest supports msi, it will be msi all the way.
>>> But I guess what you means is only set
>>> gsi can result in kvm_set_irq() deliver the MSI correctly. I think this can
>>> be done. Associating gsi with guest_msi_addr and guest_msi_data in a linked
>>> list, for gsi >= IOAPIC_PINS,
>>>
>> Let's say, (gsi >> 24) == 1. That gives us 16M potential MSIs.
>>
>
> Confused... GSI become a bitmap?
>
A structure...
struct gsi {
u32 n : 24;
u32 type : 8; // 0 -> classic gsi, 1 -> msi
};
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2008-11-04 14:35 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-31 4:50 [PATCH 0/10][v4] Enable MSI for KVM assigned device kernel part Sheng Yang
2008-10-31 4:50 ` [PATCH 01/10] KVM: Move ack notifier register and IRQ sourcd ID request Sheng Yang
2008-10-31 4:50 ` [PATCH 02/10] KVM: Separate update irq to a single function Sheng Yang
2008-10-31 4:50 ` [PATCH 03/10] KVM: Replace irq_requested with more generic irq_requested_type Sheng Yang
2008-10-31 4:50 ` [PATCH 04/10] KVM: Clean up assigned_device_update_irq Sheng Yang
2008-10-31 4:50 ` [PATCH 05/10] KVM: Add fields for MSI device assignment Sheng Yang
2008-11-04 11:05 ` Avi Kivity
2008-10-31 4:50 ` [PATCH 06/10] KVM: Export ioapic_get_delivery_bitmask Sheng Yang
2008-11-04 11:07 ` Avi Kivity
2008-11-04 11:09 ` Sheng Yang
2008-10-31 4:50 ` [PATCH 07/10] x86: Add MSI delivery mode value Sheng Yang
2008-11-04 11:09 ` Avi Kivity
2008-11-04 11:37 ` Sheng Yang
2008-10-31 4:50 ` [PATCH 08/10] KVM: Add assigned_device_msi_dispatch() Sheng Yang
2008-11-04 11:17 ` Avi Kivity
2008-11-04 11:17 ` Sheng Yang
2008-10-31 4:50 ` [PATCH 09/10] KVM: Enable MSI for device assignment Sheng Yang
2008-11-04 11:23 ` Avi Kivity
2008-11-04 13:25 ` Sheng Yang
2008-11-04 13:32 ` Avi Kivity
2008-11-04 13:58 ` Sheng Yang
2008-11-04 14:35 ` Avi Kivity [this message]
2008-11-04 14:57 ` Sheng Yang
2008-11-04 15:01 ` Avi Kivity
2008-11-04 15:14 ` Sheng Yang
2008-10-31 4:50 ` [PATCH 10/10] KVM: MSI to INTx translate Sheng Yang
2008-11-04 11:25 ` Avi Kivity
2008-11-04 11:40 ` Sheng Yang
2008-11-04 11:57 ` Avi Kivity
2008-11-04 12:55 ` Sheng Yang
-- strict thread matches above, loose matches on Subject: below --
2008-10-30 8:20 [RFC][PATCH 0/10][v3] Enable MSI for KVM assigned device Sheng Yang
2008-10-30 8:20 ` [PATCH 09/10] KVM: Enable MSI for device assignment Sheng Yang
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