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| author | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2014-11-21 14:08:39 +0300 |
|---|---|---|
| committer | David Vrabel <david.vrabel@citrix.com> | 2014-12-04 15:41:54 +0300 |
| commit | da095a996090a412c3b6292c7a8680661dca157d (patch) | |
| tree | 02247bce77b50867c227384ed023bab81ffe77c4 /drivers/xen/swiotlb-xen.c | |
| parent | a4dba130891271084344c12537731542ec77cb85 (diff) | |
| download | linux-da095a996090a412c3b6292c7a8680661dca157d.tar.xz | |
xen/arm: introduce GNTTABOP_cache_flush
Introduce support for new hypercall GNTTABOP_cache_flush.
Use it to perform cache flashing on pages used for dma when necessary.
If GNTTABOP_cache_flush is supported by the hypervisor, we don't need to
bounce dma map operations that involve foreign grants and non-coherent
devices.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Diffstat (limited to 'drivers/xen/swiotlb-xen.c')
0 files changed, 0 insertions, 0 deletions