Message ID | 1503952829-11065-3-git-send-email-boris.ostrovsky@oracle.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On Mon, Aug 28, 2017 at 04:40:27PM -0400, Boris Ostrovsky wrote: > If boot-time scrubbing is turned off we don't check pages in > check_one_page(). Thus there is no reason to ever poison them. > > Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Reviewed-by: Wei Liu <wei.liu2@citrix.com>
diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c index 7d56e92..34a7992 100644 --- a/xen/common/page_alloc.c +++ b/xen/common/page_alloc.c @@ -712,6 +712,9 @@ static void poison_one_page(struct page_info *pg) mfn_t mfn = _mfn(page_to_mfn(pg)); uint64_t *ptr; + if ( !boot_scrub_done ) + return; + ptr = map_domain_page(mfn); *ptr = ~SCRUB_PATTERN; unmap_domain_page(ptr);
If boot-time scrubbing is turned off we don't check pages in check_one_page(). Thus there is no reason to ever poison them. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> --- xen/common/page_alloc.c | 3 +++ 1 file changed, 3 insertions(+)