From: Joerg Roedel <joro@8bytes.org>
To: Yijing Wang <wangyijing@huawei.com>
Cc: Hanjun Guo <guohanjun@huawei.com>,
jiang.liu@huawei.com, iommu@lists.linux-foundation.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 14/16] amd_iommu: clean up unnecessary MSI/MSI-X capability find
Date: Wed, 14 Aug 2013 12:20:09 +0200 [thread overview]
Message-ID: <20130814102007.GE4491@8bytes.org> (raw)
In-Reply-To: <1375967556-6248-1-git-send-email-wangyijing@huawei.com>
On Thu, Aug 08, 2013 at 09:12:36PM +0800, Yijing Wang wrote:
> PCI core will initialize device MSI/MSI-X capability in
> pci_msi_init_pci_dev(). So device driver should use
> pci_dev->msi_cap/msix_cap to determine whether the device
> support MSI/MSI-X instead of using
> pci_find_capability(pci_dev, PCI_CAP_ID_MSI/MSIX).
> Access to PCIe device config space again will consume more time.
>
> Signed-off-by: Yijing Wang <wangyijing@huawei.com>
> Cc: Joerg Roedel <joro@8bytes.org>
> Cc: iommu@lists.linux-foundation.org
> Cc: linux-kernel@vger.kernel.org
Applied to x86/amd, thanks.
prev parent reply other threads:[~2013-08-14 10:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-08 13:12 [PATCH 14/16] amd_iommu: clean up unnecessary MSI/MSI-X capability find Yijing Wang
2013-08-14 10:20 ` Joerg Roedel [this message]
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