Re: [Xen-devel] [RFC PATCH 01/20] x86/xen/MSI: Eliminate arch_msix_mask_irq() and arch_msi_mask_irq()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [DMA Engine]     [Linux Coverity]     [Linux USB]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Greybus]

  Powered by Linux