From: Avi Kivity <avi@redhat.com>
To: Sheng Yang <sheng@linux.intel.com>
Cc: kvm@vger.kernel.org, "Han, Weidong" <weidong.han@intel.com>,
"Kay, Allen M" <allen.m.kay@intel.com>
Subject: Re: [PATCH 4/4] KVM: x86: Enable MSI for assigned device
Date: Tue, 07 Oct 2008 15:42:41 +0200 [thread overview]
Message-ID: <48EB6751.9080901@redhat.com> (raw)
In-Reply-To: <200810071359.58975.sheng@linux.intel.com>
Sheng Yang wrote:
> Seems we needn't tell userspace if MSI can be enabled. It's determined mostly
> by the device, and pci_enable_msi() checked that.
>
> So I think QEmu can expose MSI capability if the device got it. If it's fail
> to be enabled, just fall back to IRQ and return error to QEmu is enough, of
> course, QEmu should set MSI enable bit after kernel space done.
>
Do we need to add the additional condition, "and if the host kernel
supports it"?
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2008-10-07 13:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-26 5:17 [PATCH 4/4] KVM: x86: Enable MSI for assigned device Sheng Yang
2008-10-05 10:27 ` Avi Kivity
2008-10-06 3:36 ` Yang, Sheng
2008-10-07 5:59 ` Sheng Yang
2008-10-07 13:42 ` Avi Kivity [this message]
2008-10-08 2:55 ` Sheng Yang
-- strict thread matches above, loose matches on Subject: below --
2008-10-07 6:09 Sheng Yang
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