From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Christoph Hellwig <hch@lst.de>,
Stefano Stabellini <sstabellini@kernel.org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
gross@suse.com
Cc: xen-devel@lists.xenproject.org, iommu@lists.linux-foundation.org,
x86@kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 09/11] swiotlb-xen: simplify cache maintainance
Date: Fri, 6 Sep 2019 09:52:12 -0400 [thread overview]
Message-ID: <e4f9b393-2631-57cd-f42f-3581e75ab9a3@oracle.com> (raw)
In-Reply-To: <20190905113408.3104-10-hch@lst.de>
On 9/5/19 7:34 AM, Christoph Hellwig wrote:
> diff --git a/include/xen/swiotlb-xen.h b/include/xen/swiotlb-xen.h
> index 5e4b83f83dbc..d71380f6ed0b 100644
> --- a/include/xen/swiotlb-xen.h
> +++ b/include/xen/swiotlb-xen.h
> @@ -4,6 +4,11 @@
>
> #include <linux/swiotlb.h>
>
> +void xen_dma_sync_for_cpu(struct device *dev, dma_addr_t handle,
> + phys_addr_t paddr, size_t size, enum dma_data_direction dir);
> +void xen_dma_sync_for_device(struct device *dev, dma_addr_t handle,
> + phys_addr_t paddr, size_t size, enum dma_data_direction dir);
> +
> extern int xen_swiotlb_init(int verbose, bool early);
> extern const struct dma_map_ops xen_swiotlb_dma_ops;
We need nop definitions of these two for x86.
Everything builds now but that's probably because the calls are under
'if (!dev_is_dma_coherent(dev))' which is always false so compiler
optimized is out. I don't think we should rely on that.
-boris
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next prev parent reply other threads:[~2019-09-06 13:52 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-05 11:33 swiotlb-xen cleanups v4 Christoph Hellwig
2019-09-05 11:33 ` [PATCH 01/11] xen/arm: use dma-noncoherent.h calls for xen-swiotlb cache maintainance Christoph Hellwig
2019-09-10 0:18 ` Stefano Stabellini
2019-09-05 11:33 ` [PATCH 02/11] xen/arm: consolidate page-coherent.h Christoph Hellwig
2019-09-10 0:18 ` Stefano Stabellini
2019-09-05 11:34 ` [PATCH 03/11] xen/arm: use dev_is_dma_coherent Christoph Hellwig
2019-09-05 11:34 ` [PATCH 04/11] xen/arm: simplify dma_cache_maint Christoph Hellwig
2019-09-05 11:34 ` [PATCH 05/11] xen/arm: remove xen_dma_ops Christoph Hellwig
2019-09-05 11:34 ` [PATCH 06/11] xen: remove the exports for xen_{create, destroy}_contiguous_region Christoph Hellwig
2019-09-05 11:34 ` [PATCH 07/11] swiotlb-xen: remove xen_swiotlb_dma_mmap and xen_swiotlb_dma_get_sgtable Christoph Hellwig
2019-09-05 11:34 ` [PATCH 08/11] swiotlb-xen: use the same foreign page check everywhere Christoph Hellwig
2019-09-05 11:34 ` [PATCH 09/11] swiotlb-xen: simplify cache maintainance Christoph Hellwig
2019-09-06 13:52 ` Boris Ostrovsky [this message]
2019-09-06 14:01 ` Christoph Hellwig
2019-09-06 14:07 ` [Xen-devel] " Andrew Cooper
2019-09-06 14:19 ` Boris Ostrovsky
2019-09-06 14:43 ` Konrad Rzeszutek Wilk
2019-09-06 14:46 ` Boris Ostrovsky
2019-09-05 11:34 ` [PATCH 10/11] swiotlb-xen: merge xen_unmap_single into xen_swiotlb_unmap_page Christoph Hellwig
2019-09-05 11:34 ` [PATCH 11/11] arm64: use asm-generic/dma-mapping.h Christoph Hellwig
2019-09-11 10:45 ` swiotlb-xen cleanups v4 Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2019-08-16 13:00 swiotlb-xen cleanups Christoph Hellwig
2019-08-16 13:00 ` [PATCH 09/11] swiotlb-xen: simplify cache maintainance Christoph Hellwig
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