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authorMark Brown <broonie@kernel.org>2020-10-06 16:19:24 +0100
committerMark Brown <broonie@kernel.org>2020-10-06 16:19:24 +0100
commitfd6b519a30a7179026d22c98d6bf10bb5ca8ca27 (patch)
treee4a6bc4d8548a5b8db7148a18eb257b84e72d48b /drivers/xen/Kconfig
parent43499134f50a77844f0503df2c995f43b858f4c3 (diff)
parent856deb866d16e29bd65952e0289066f6078af773 (diff)
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Merge tag 'v5.9-rc5' into asoc-5.10
Linux 5.9-rc5
Diffstat (limited to 'drivers/xen/Kconfig')
-rw-r--r--drivers/xen/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index ea6c1e7e3e42..41645fe6ad48 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -325,4 +325,14 @@ config XEN_HAVE_VPMU
config XEN_FRONT_PGDIR_SHBUF
tristate
+config XEN_UNPOPULATED_ALLOC
+ bool "Use unpopulated memory ranges for guest mappings"
+ depends on X86 && ZONE_DEVICE
+ default XEN_BACKEND || XEN_GNTDEV || XEN_DOM0
+ help
+ Use unpopulated memory ranges in order to create mappings for guest
+ memory regions, including grant maps and foreign pages. This avoids
+ having to balloon out RAM regions in order to obtain physical memory
+ space to create such mappings.
+
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