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Zoltan Kiss authored
The grant mapping API does m2p_override unnecessarily: only gntdev needs it, for blkback and future netback patches it just cause a lock contention, as those pages never go to userspace. Therefore this series does the following: - the bulk of the original function (everything after the mapping hypercall) is moved to arch-dependent set/clear_foreign_p2m_mapping - the "if (xen_feature(XENFEAT_auto_translated_physmap))" branch goes to ARM - therefore the ARM function could be much smaller, the m2p_override stubs could be also removed - on x86 the set_phys_to_machine calls were moved up to this new funcion from m2p_override functions - and m2p_override functions are only called when there is a kmap_ops param It also removes a stray space from arch/x86/include/asm/xen/page.h. Signed-off-by:
Zoltan Kiss <zoltan.kiss@citrix.com> Suggested-by:
Anthony Liguori <aliguori@amazon.com> Suggested-by:
David Vrabel <david.vrabel@citrix.com> Suggested-by:
Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by:
David Vrabel <david.vrabel@citrix.com> Signed-off-by:
Stefano Stabellini <stefano.stabellini@eu.citrix.com>
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