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authorLinus Torvalds <torvalds@linux-foundation.org>2020-09-06 19:59:27 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-09-06 19:59:27 +0300
commit68beef571071014ef34a3beac65fe2af7e8e3cf6 (patch)
tree7a6e7b5875e909baf587b947b536512d95d046de /include/xen
parentdd9fb9bb3340c791a2be106fdc895db75f177343 (diff)
parent9e2369c06c8a181478039258a4598c1ddd2cadfa (diff)
downloadlinux-68beef571071014ef34a3beac65fe2af7e8e3cf6.tar.xz
Merge tag 'for-linus-5.9-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross: "A small series for fixing a problem with Xen PVH guests when running as backends (e.g. as dom0). Mapping other guests' memory is now working via ZONE_DEVICE, thus not requiring to abuse the memory hotplug functionality for that purpose" * tag 'for-linus-5.9-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen: add helpers to allocate unpopulated memory memremap: rename MEMORY_DEVICE_DEVDAX to MEMORY_DEVICE_GENERIC xen/balloon: add header guard
Diffstat (limited to 'include/xen')
-rw-r--r--include/xen/balloon.h4
-rw-r--r--include/xen/xen.h9
2 files changed, 13 insertions, 0 deletions
diff --git a/include/xen/balloon.h b/include/xen/balloon.h
index 6fb95aa19405..6dbdb0b3fd03 100644
--- a/include/xen/balloon.h
+++ b/include/xen/balloon.h
@@ -2,6 +2,8 @@
/******************************************************************************
* Xen balloon functionality
*/
+#ifndef _XEN_BALLOON_H
+#define _XEN_BALLOON_H
#define RETRY_UNLIMITED 0
@@ -34,3 +36,5 @@ static inline void xen_balloon_init(void)
{
}
#endif
+
+#endif /* _XEN_BALLOON_H */
diff --git a/include/xen/xen.h b/include/xen/xen.h
index 19a72f591e2b..43efba045acc 100644
--- a/include/xen/xen.h
+++ b/include/xen/xen.h
@@ -52,4 +52,13 @@ bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
extern u64 xen_saved_max_mem_size;
#endif
+#ifdef CONFIG_XEN_UNPOPULATED_ALLOC
+int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages);
+void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages);
+#else
+#define xen_alloc_unpopulated_pages alloc_xenballooned_pages
+#define xen_free_unpopulated_pages free_xenballooned_pages
+#include <xen/balloon.h>
+#endif
+
#endif /* _XEN_XEN_H */