From: David Hildenbrand Subject: [PATCH RFC 4/7] riscv/vdso: don't clear PG_reserved Date: Wed, 5 Dec 2018 13:28:48 +0100 Message-ID: <20181205122851.5891-5-david@redhat.com> References: <20181205122851.5891-1-david@redhat.com> Return-path: In-Reply-To: <20181205122851.5891-1-david@redhat.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-m68k@lists.linux-m68k.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-mediatek@lists.infradead.org, David Hildenbrand , Palmer Dabbelt , Albert Ou , Tobias Klauser , Andrew Morton , Michal Hocko , Matthew Wilcox List-Id: linux-mediatek@lists.infradead.org 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 Cc: Albert Ou Cc: Tobias Klauser Cc: Andrew Morton Cc: Michal Hocko Cc: Matthew Wilcox Signed-off-by: David Hildenbrand --- 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