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authorLinus Torvalds <torvalds@linux-foundation.org>2018-09-15 02:01:06 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-09-15 02:01:06 +0300
commitd7c0268090e23f3517c7b7555d3f4f9d73580f96 (patch)
tree4155224410495be015174712832c16e67843ffe4 /include
parenteae4f8851f35ceb75f56a861659800c33603a476 (diff)
parent58a57569904039d9ac38c0ff2a88396a43899689 (diff)
downloadlinux-d7c0268090e23f3517c7b7555d3f4f9d73580f96.tar.xz
Merge tag 'for-linus-4.19c-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross: "This contains some minor cleanups and fixes: - a new knob for controlling scrubbing of pages returned by the Xen balloon driver to the Xen hypervisor to address a boot performance issue seen in large guests booted pre-ballooned - a fix of a regression in the gntdev driver which made it impossible to use fully virtualized guests (HVM guests) with a 4.19 based dom0 - a fix in Xen cpu hotplug functionality which could be triggered by wrong admin commands (setting number of active vcpus to 0) One further note: the patches have all been under test for several days in another branch. This branch has been rebased in order to avoid merge conflicts" * tag 'for-linus-4.19c-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/gntdev: fix up blockable calls to mn_invl_range_start xen: fix GCC warning and remove duplicate EVTCHN_ROW/EVTCHN_COL usage xen: avoid crash in disable_hotplug_cpu xen/balloon: add runtime control for scrubbing ballooned out pages xen/manage: don't complain about an empty value in control/sysrq node
Diffstat (limited to 'include')
-rw-r--r--include/xen/mem-reservation.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/include/xen/mem-reservation.h b/include/xen/mem-reservation.h
index 80b52b4945e9..a2ab516fcd2c 100644
--- a/include/xen/mem-reservation.h
+++ b/include/xen/mem-reservation.h
@@ -17,11 +17,12 @@
#include <xen/page.h>
+extern bool xen_scrub_pages;
+
static inline void xenmem_reservation_scrub_page(struct page *page)
{
-#ifdef CONFIG_XEN_SCRUB_PAGES
- clear_highpage(page);
-#endif
+ if (xen_scrub_pages)
+ clear_highpage(page);
}
#ifdef CONFIG_XEN_HAVE_PVMMU