Messages in this thread Patch in this message | | | From | David Hildenbrand <> | Subject | [PATCH v2 4/9] riscv/vdso: don't clear PG_reserved | Date | Mon, 14 Jan 2019 13:58:58 +0100 |
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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 <palmer@sifive.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Tobias Klauser <tklauser@distanz.ch> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Acked-by: Palmer Dabbelt <palmer@sifive.com> Signed-off-by: David Hildenbrand <david@redhat.com> --- 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
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