diff mbox series

[kvm-unit-tests,v1,10/12] lib/alloc_page: Wire up ZERO_FLAG

Message ID 20201216201200.255172-11-imbrenda@linux.ibm.com (mailing list archive)
State New, archived
Headers show
Series Fix and improve the page allocator | expand

Commit Message

Claudio Imbrenda Dec. 16, 2020, 8:11 p.m. UTC 
Memory allocated with the ZERO_FLAG will now be zeroed before being
returned to the caller.

Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
---
 lib/alloc_page.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/lib/alloc_page.c b/lib/alloc_page.c
index d850b6a..8c79202 100644
--- a/lib/alloc_page.c
+++ b/lib/alloc_page.c
@@ -372,6 +372,8 @@  static void *page_memalign_order_flags(u8 ord, u8 al, u32 flags)
 		if (area & BIT(i))
 			res = page_memalign_order(areas + i, ord, al);
 	spin_unlock(&lock);
+	if (res && (flags & FLAG_ZERO))
+		memset(res, 0, BIT(ord) * PAGE_SIZE);
 	return res;
 }