From: David Vrabel <david.vrabel@citrix.com>
To: Yijing Wang <wangyijing@huawei.com>, Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-mips@linux-mips.org, linux-ia64@vger.kernel.org,
linux-pci@vger.kernel.org, Xinwei Hu <huxinwei@huawei.com>,
"H. Peter Anvin" <hpa@zytor.com>,
sparclinux@vger.kernel.org, linux-s390@vger.kernel.org,
Russell King <linux@arm.linux.org.uk>,
Joerg Roedel <joro@8bytes.org>,
x86@kernel.org, Sebastian Ott <sebott@linux.vnet.ibm.com>,
xen-devel@lists.xenproject.org, arnab.basu@freescale.com,
Arnd Bergmann <arnd@arndb.de>,
Marc Zyngier <marc.zyngier@arm.com>,
Chris Metcalf <cmetcalf@tilera.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
Tony Luck <tony.luck@intel.com>,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
Wuyun <wuyun.wu@huawei.com>,
linuxppc-dev@lists.ozlabs.org,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [Xen-devel] [RFC PATCH 01/20] x86/xen/MSI: Eliminate arch_msix_mask_irq() and arch_msi_mask_irq()
Date: Tue, 12 Aug 2014 10:09:49 +0100 [thread overview]
Message-ID: <53E9D9DD.3060901@citrix.com> (raw)
In-Reply-To: <1407828373-24322-2-git-send-email-wangyijing@huawei.com>
On 12/08/14 08:25, Yijing Wang wrote:
> Commit 0e4ccb150 added two __weak arch functions arch_msix_mask_irq()
> and arch_msi_mask_irq() to fix a bug found when running xen in x86.
> Introduced these two funcntions make MSI code complex. This patch
> reverted commit 0e4ccb150 and add #ifdef for x86 msi_chip to fix this
> bug for simplicity. Also this is preparation for using struct
> msi_chip instead of weak arch MSI functions in all platforms.
[...]
> static struct irq_chip msi_chip = {
> .name = "PCI-MSI",
> +#ifdef CONFIG_XEN
> + .irq_unmask = nop_unmask_msi_irq,
> + .irq_mask = nop_mask_msi_irq,
> +#else
> .irq_unmask = unmask_msi_irq,
> .irq_mask = mask_msi_irq,
> +#endif
No. CONFIG_XEN kernels can run on Xen and bare metal so this must be a
runtime option.
David
next prev parent reply other threads:[~2014-08-12 9:20 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-12 7:25 [RFC PATCH 00/20] Use msi_chip to configure MSI/MSI-X in all platforms Yijing Wang
2014-08-12 7:25 ` [RFC PATCH 01/20] x86/xen/MSI: Eliminate arch_msix_mask_irq() and arch_msi_mask_irq() Yijing Wang
2014-08-12 9:09 ` David Vrabel [this message]
2014-08-12 11:11 ` [Xen-devel] " Yijing Wang
2014-08-12 7:25 ` [RFC PATCH 02/20] MSI: Clean up struct msi_chip argument Yijing Wang
2014-08-12 7:25 ` [RFC PATCH 03/20] PCI/MSI: Remove useless bus->msi assignment Yijing Wang
2014-08-12 7:25 ` [RFC PATCH 04/20] MSI: Remove the redundant irq_set_chip_data() Yijing Wang
2014-08-12 7:25 ` [RFC PATCH 05/20] MSI: Refactor struct msi_chip to become more common Yijing Wang
2014-08-12 7:25 ` [RFC PATCH 06/20] PCI/MSI: Introduce arch_get_match_msi_chip() to find the match msi_chip Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 07/20] x86/MSI: Use msi_chip instead of arch func to configure MSI/MSI-X Yijing Wang
2014-08-12 19:09 ` Konrad Rzeszutek Wilk
2014-08-13 1:16 ` Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 08/20] x86/xen/MSI: " Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 09/20] irq_remapping/MSI: " Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 10/20] x86/MSI: Remove unused MSI weak arch functions Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 11/20] MIPS/Octeon/MSI: Use msi_chip instead of arch func to configure MSI/MSI-X Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 12/20] MIPS/Xlp/MSI: " Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 13/20] MIPS/xlr/MSI: " Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 14/20] Powerpc/MSI: " Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 15/20] s390/MSI: " Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 16/20] arm/iop13xx/MSI: " Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 17/20] IA64/MSI: " Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 18/20] Sparc/MSI: " Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 19/20] tile/MSI: " Yijing Wang
2014-08-12 7:26 ` [RFC PATCH 20/20] PCI/MSI: Clean up unused MSI arch functions Yijing Wang
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