From 795c230604cb78ee927ca3904ec299b777b5f6c9 Mon Sep 17 00:00:00 2001 From: David Hildenbrand <david@redhat.com> Date: Tue, 5 Mar 2019 15:47:18 -0800 Subject: riscv/vdso: don't clear PG_reserved 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. Link: http://lkml.kernel.org/r/20190114125903.24845-5-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Palmer Dabbelt <palmer@sifive.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Tobias Klauser <tklauser@distanz.ch> Cc: Michal Hocko <mhocko@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --- arch/riscv/kernel/vdso.c | 1 - 1 file changed, 1 deletion(-) (limited to 'arch') 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); -- cgit v1.2.3-70-g09d2