diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-07-17 08:02:35 -1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-07-17 08:02:35 -1000 |
| commit | 59ca9ee42838d0f597137cf811e47eaf42fdcb69 (patch) | |
| tree | 314be354db51ccd602b8459a39f5eeec76b52cdb /drivers/xen/balloon.c | |
| parent | 22d368544b0ed9093a3db3ee4e00a842540fcecd (diff) | |
| parent | fb9a0c443691ceaab3daba966bbbd9f5ff3aa26f (diff) | |
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
Diffstat (limited to 'drivers/xen/balloon.c')
| -rw-r--r-- | drivers/xen/balloon.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index b7a506f2bb1..5c660c77f03 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -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 |