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xen: avoid link error on ARM

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Building the privcmd code as a loadable module on ARM, we get
a link error due to the private cache management functions:

ERROR: "__sync_icache_dcache" [drivers/xen/xen-privcmd.ko] undefined!

Move the code into a new that is always built in when Xen is enabled,
as suggested by Juergen Gross and Boris Ostrovsky.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Arnd Bergmann 2019-07-22 09:46:29 +02:00 • committed by Juergen Gross
commit a78d14a316
3 changed files with 40 additions and 30 deletions
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3
include/xen/xen-ops.h
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@ -109,6 +109,9 @@ static inline int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
}
#endif
int xen_remap_vma_range(struct vm_area_struct *vma, unsigned long addr,
unsigned long len);
/*
* xen_remap_domain_gfn_array() - map an array of foreign frames by gfn
* @vma: VMA to map the pages into