Subject: [PATCH RFC 4/7] riscv/vdso: don't clear PG_reserved

From: David Hildenbrand <[email-masked]>
Date: Wed, 5 Dec 2018 13:28:48 +0100

The VDSO is part of the kernel image and therefore the struct pages are
marked as reserved during boot.

As we install a special mapping, the actual struct pages will never be
exposed to MM via the page tables. We can therefore leave the pages
marked as reserved.

Cc: Palmer Dabbelt <[email-masked]>
Cc: Albert Ou <[email-masked]>
Cc: Tobias Klauser <[email-masked]>
Cc: Andrew Morton <[email-masked]>
Cc: Michal Hocko <[email-masked]>
Cc: Matthew Wilcox <[email-masked]>
Signed-off-by: David Hildenbrand <[email-masked]>
---
 arch/riscv/kernel/vdso.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/riscv/kernel/vdso.c b/arch/riscv/kernel/vdso.c
index 582cb153eb24..0cd044122234 100644
--- a/arch/riscv/kernel/vdso.c
+++ b/arch/riscv/kernel/vdso.c
@@ -54,7 +54,6 @@ static int __init vdso_init(void)
 		struct page *pg;
 
 		pg = virt_to_page(vdso_start + (i << PAGE_SHIFT));
-		ClearPageReserved(pg);
 		vdso_pagelist[i] = pg;
 	}
 	vdso_pagelist[i] = virt_to_page(vdso_data);
-- 
2.17.2