From: David Hildenbrand <david@redhat.com>
To: linux-mm@kvack.org
Cc: linux-s390@vger.kernel.org, Albert Ou <aou@eecs.berkeley.edu>,
Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@redhat.com>,
Palmer Dabbelt <palmer@sifive.com>,
linux-kernel@vger.kernel.org,
Matthew Wilcox <willy@infradead.org>,
Michal Hocko <mhocko@kernel.org>,
linux-m68k@lists.linux-m68k.org,
linux-mediatek@lists.infradead.org,
linux-riscv@lists.infradead.org, linuxppc-dev@lists.ozlabs.org,
Tobias Klauser <tklauser@distanz.ch>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH RFC 4/7] riscv/vdso: don't clear PG_reserved
Date: Wed, 5 Dec 2018 13:28:48 +0100 [thread overview]
Message-ID: <20181205122851.5891-5-david@redhat.com> (raw)
In-Reply-To: <20181205122851.5891-1-david@redhat.com>
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>
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
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2018-12-05 12:32 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-05 12:28 [PATCH RFC 0/7] mm: PG_reserved cleanups and documentation David Hildenbrand
2018-12-05 12:28 ` [PATCH RFC 1/7] agp: efficeon: no need to set PG_reserved on GATT tables David Hildenbrand
2018-12-05 12:28 ` [PATCH RFC 2/7] s390/vdso: don't clear PG_reserved David Hildenbrand
2018-12-05 12:28 ` [PATCH RFC 3/7] powerpc/vdso: " David Hildenbrand
2018-12-05 12:28 ` David Hildenbrand [this message]
2018-12-07 18:45 ` [PATCH RFC 4/7] riscv/vdso: " Palmer Dabbelt
2018-12-05 12:28 ` [PATCH RFC 5/7] m68k/mm: use __ClearPageReserved() David Hildenbrand
2018-12-05 12:28 ` [PATCH RFC 6/7] arm64: kexec: no need to ClearPageReserved() David Hildenbrand
2018-12-05 14:00 ` James Morse
2018-12-05 12:28 ` [PATCH RFC 7/7] mm: better document PG_reserved David Hildenbrand
2018-12-05 12:59 ` Michal Hocko
2018-12-05 14:35 ` Matthew Wilcox
2018-12-05 15:05 ` David Hildenbrand
2018-12-05 17:32 ` Matthew Wilcox
2018-12-05 18:13 ` David Hildenbrand
2018-12-06 10:46 ` David Hildenbrand
2018-12-05 12:56 ` [PATCH RFC 0/7] mm: PG_reserved cleanups and documentation Michal Hocko
2018-12-05 13:04 ` David Hildenbrand
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20181205122851.5891-5-david@redhat.com \
--to=david@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=aou@eecs.berkeley.edu \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-m68k@lists.linux-m68k.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=linux-mm@kvack.org \
--cc=linux-riscv@lists.infradead.org \
--cc=linux-s390@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mhocko@kernel.org \
--cc=palmer@sifive.com \
--cc=tklauser@distanz.ch \
--cc=willy@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).