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| author |   Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2015-04-24 10:16:40 +0100 |
|---|---|---|
| committer |   David Vrabel <david.vrabel@citrix.com> | 2015-05-06 15:02:58 +0100 |
| commit | 8746515d7f04c9ea94cf43e2db1fd2cfca93276d (patch) | |
| tree | d6770d527bfdffc9e9a4fe2f970304a547cde20d /include | |
| parent | hypervisor/x86/xen: Unset X86_BUG_SYSRET_SS_ATTRS on Xen PV guests (diff) | |
| download | linux-dev-8746515d7f04c9ea94cf43e2db1fd2cfca93276d.tar.xz linux-dev-8746515d7f04c9ea94cf43e2db1fd2cfca93276d.zip | |
xen: Add __GFP_DMA flag when xen_swiotlb_init gets free pages on ARM
Make sure that xen_swiotlb_init allocates buffers that are DMA capable
when at least one memblock is available below 4G. Otherwise we assume
that all devices on the SoC can cope with >4G addresses. We do this on
ARM and ARM64, where dom0 is mapped 1:1, so pfn == mfn in this case.
No functional changes on x86.
From: Chen Baozi <baozich@gmail.com>
Signed-off-by: Chen Baozi <baozich@gmail.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Tested-by: Chen Baozi <baozich@gmail.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions