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authorDavid Hildenbrand <david@redhat.com>2019-03-05 15:47:18 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-05 21:07:18 -0800
commit795c230604cb78ee927ca3904ec299b777b5f6c9 (patch)
tree6ce27738986ce272a1ccf06c809b48f65e5e5c3c
parentpowerpc/vdso: don't clear PG_reserved (diff)
downloadlinux-dev-795c230604cb78ee927ca3904ec299b777b5f6c9.tar.xz
linux-dev-795c230604cb78ee927ca3904ec299b777b5f6c9.zip
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>
Diffstat (limited to '')
-rw-r--r--arch/riscv/kernel/vdso.c1
1 files changed, 0 insertions, 1 deletions
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);