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Diffstat (limited to 'drivers/xen/balloon.c')
| -rw-r--r-- | drivers/xen/balloon.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index 8dc7109d61b..2ba8f95516a 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -298,6 +298,14 @@ static int decrease_reservation(unsigned long nr_pages) frame_list[i] = pfn_to_mfn(pfn); scrub_page(page); + + if (!PageHighMem(page)) { + ret = HYPERVISOR_update_va_mapping( + (unsigned long)__va(pfn << PAGE_SHIFT), + __pte_ma(0), 0); + BUG_ON(ret); + } + } /* Ensure that ballooned highmem pages don't have kmaps. */ |