Commit 11224e1f authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'for-linus-4.14c-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip 

Pull xen fixes from Juergen Gross:

 - a fix for the Xen gntdev device repairing an issue in case of partial
   failure of mapping multiple pages of another domain

 - a fix of a regression in the Xen balloon driver introduced in 4.13

 - a build fix for Xen on ARM which will trigger e.g. for Linux RT

 - a maintainers update for pvops (not really Xen, but carrying through
   this tree just for convenience)

* tag 'for-linus-4.14c-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  maintainers: drop Chris Wright from pvops
  arm/xen: don't inclide rwlock.h directly.
  xen: fix booting ballooned down hvm guest
  xen/gntdev: avoid out of bounds access in case of partial gntdev_mmap()
parents 90e68720 8fc669ea

MAINTAINERS

+0 −1
Original line number Diff line number Diff line
@@ -10179,7 +10179,6 @@ F: Documentation/parport*.txt 


PARAVIRT_OPS INTERFACE

M:	Juergen Gross <jgross@suse.com>

M:	Chris Wright <chrisw@sous-sol.org>

M:	Alok Kataria <akataria@vmware.com>

M:	Rusty Russell <rusty@rustcorp.com.au>

L:	virtualization@lists.linux-foundation.org

arch/arm/xen/p2m.c

+1 −1
Original line number Diff line number Diff line 
#include <linux/bootmem.h>

#include <linux/gfp.h>

#include <linux/export.h>

#include <linux/rwlock.h>

#include <linux/spinlock.h>

#include <linux/slab.h>

#include <linux/types.h>

#include <linux/dma-mapping.h>

drivers/xen/gntdev.c

+1 −1
Original line number Diff line number Diff line
@@ -1024,6 +1024,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma) 
	mutex_unlock(&priv->lock);



	if (use_ptemod) {

		map->pages_vm_start = vma->vm_start;

		err = apply_to_page_range(vma->vm_mm, vma->vm_start,

					  vma->vm_end - vma->vm_start,

					  find_grant_ptes, map);
@@ -1061,7 +1062,6 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma) 
					    set_grant_ptes_as_special, NULL);

		}

#endif

		map->pages_vm_start = vma->vm_start;

	}



	return 0;

drivers/xen/xen-balloon.c

+13 −6
Original line number Diff line number Diff line
@@ -57,7 +57,7 @@ static int register_balloon(struct device *dev); 
static void watch_target(struct xenbus_watch *watch,

			 const char *path, const char *token)

{

	unsigned long long new_target;

	unsigned long long new_target, static_max;

	int err;

	static bool watch_fired;

	static long target_diff;
@@ -72,13 +72,20 @@ static void watch_target(struct xenbus_watch *watch, 
	 * pages. PAGE_SHIFT converts bytes to pages, hence PAGE_SHIFT - 10.

	 */

	new_target >>= PAGE_SHIFT - 10;

	if (watch_fired) {

		balloon_set_new_target(new_target - target_diff);

		return;

	}



	if (!watch_fired) {

		watch_fired = true;

	target_diff = new_target - balloon_stats.target_pages;

		err = xenbus_scanf(XBT_NIL, "memory", "static-max", "%llu",

				   &static_max);

		if (err != 1)

			static_max = new_target;

		else

			static_max >>= PAGE_SHIFT - 10;

		target_diff = xen_pv_domain() ? 0

				: static_max - balloon_stats.target_pages;

	}



	balloon_set_new_target(new_target - target_diff);

}

static struct xenbus_watch target_watch = {

	.node = "memory/target",

CRA Git | Maintained and supported by SUSTech CRA and CCSE