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mm: remove the HMM config option

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All the mm/hmm.c code is better keyed off HMM_MIRROR.  Also let nouveau
depend on it instead of the mix of a dummy dependency symbol plus the
actually selected one.  Drop various odd dependencies, as the code is
pretty portable.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Christoph Hellwig 2019-06-26 14:27:23 +02:00 • committed by Jason Gunthorpe
parent 7328d9cc1b
commit 43535b0aef
6 changed files with 8 additions and 33 deletions
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5
include/linux/hmm.h
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@ -62,7 +62,7 @@
#include <linux/kconfig.h>
#include <asm/pgtable.h>
#if IS_ENABLED(CONFIG_HMM)
#ifdef CONFIG_HMM_MIRROR
#include <linux/device.h>
#include <linux/migrate.h>
@ -332,9 +332,6 @@ static inline uint64_t hmm_pfn_from_pfn(const struct hmm_range *range,
return hmm_device_entry_from_pfn(range, pfn);
}
#if IS_ENABLED(CONFIG_HMM_MIRROR)
/*
* Mirroring: how to synchronize device page table with CPU page table.
*