OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Fixes: 

- Fixes console deadlock when resuming PV guests
  - Fix regression hit when ballooning and resuming PV guests
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJTxt1pAAoJEFjIrFwIi8fJbGcH/RW88DhFw3wJrtyd68R2uY4R
 BQVsUeXltzS7cRZ46ytStn+UveXOII9SI1kdU0yAPWbpzgKwXkXLTGUbL26vXmfq
 ZpAGIVFBG+SrHuTDEYP/IhB2TI6ugTeHVK8+Mo+HfjEs99OJ+BAf4IlZ9cLUvrW8
 l51HcFe7c9ueH7YculTAesUWZrdS6p5FBbTz0pwG8BvU5NxJ2EC+MktLEKZmV27Q
 Y3CN///BhIN6YXhPA3Frykxs36m4gFJUPgXbEQFea79I67f+frBX/VdKNPeaMoaR
 yb305PStdxwo6Ja8Qx/CrTl+y8vTtLP1cADRGSdLD3m1vI42PNF4Qjr1ruLbA34=
 =ky5L
 -----END PGP SIGNATURE-----

Merge tag 'stable/for-linus-3.16-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull Xen fixes from Konrad Rzeszutek Wilk:
 "Two fixes found during migration of PV guests.  David would be the one
  doing this pull but he is on vacation.

  Fixes:
   - fix console deadlock when resuming PV guests
   - fix regression hit when ballooning and resuming PV guests"

* tag 'stable/for-linus-3.16-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/balloon: set ballooned out pages as invalid in p2m
  xen/manage: fix potential deadlock when resuming the console
This commit is contained in:
Linus Torvalds 2014-07-17 08:02:35 -10:00
parent 22d368544b fb9a0c4436
commit 59ca9ee428
2 changed files with 9 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/xen/balloon.c
View File

@ -426,20 +426,18 @@ static enum bp_state decrease_reservation(unsigned long nr_pages, gfp_t gfp)
* p2m are consistent.
*/
if (!xen_feature(XENFEAT_auto_translated_physmap)) {
unsigned long p;
struct page *scratch_page = get_balloon_scratch_page();
if (!PageHighMem(page)) {
struct page *scratch_page = get_balloon_scratch_page();
ret = HYPERVISOR_update_va_mapping(
(unsigned long)__va(pfn << PAGE_SHIFT),
pfn_pte(page_to_pfn(scratch_page),
PAGE_KERNEL_RO), 0);
BUG_ON(ret);
}
p = page_to_pfn(scratch_page);
__set_phys_to_machine(pfn, pfn_to_mfn(p));
put_balloon_scratch_page();
put_balloon_scratch_page();
}
__set_phys_to_machine(pfn, INVALID_P2M_ENTRY);
}
#endif

5
drivers/xen/manage.c
View File

@ -88,7 +88,6 @@ static int xen_suspend(void *data)
if (!si->cancelled) {
xen_irq_resume();
xen_console_resume();
xen_timer_resume();
}
@ -135,6 +134,10 @@ static void do_suspend(void)
err = stop_machine(xen_suspend, &si, cpumask_of(0));
/* Resume console as early as possible. */
if (!si.cancelled)
xen_console_resume();
raw_notifier_call_chain(&xen_resume_notifier, 0, NULL);
dpm_resume_start(si.cancelled ? PMSG_THAW : PMSG_RESTORE);