From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: linux-efi@vger.kernel.org
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Marc Zyngier <marc.zyngier@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
linux-mm@kvack.org, James Morse <james.morse@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/2] efi/arm/gicv3: implement fix for memory reservation issue
Date: Wed, 13 Feb 2019 14:27:36 +0100 [thread overview]
Message-ID: <20190213132738.10294-1-ard.biesheuvel@linaro.org> (raw)
Another attempt at fixing the chicked-and-egg issue where the number of
memblock reservations for GICv3 LPI tables overflow the statically
allocated table, and reallocating it involves allocating memory pages
that may turn out to be the ones we were attempting to reserve in the
first place.
If this is accepted as an appropriate fix, something similar should be
backported to v4.19 as well, although there, we'll need to increase the
memblock reservation table size even more, given that it lacks a later
optimization to the EFI memreserve code to merge the linked list entries.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: linux-mm@kvack.org
Ard Biesheuvel (2):
arm64: account for GICv3 LPI tables in static memblock reserve table
efi/arm: Revert "Defer persistent reservations until after
paging_init()"
arch/arm64/include/asm/memory.h | 11 +++++++++++
arch/arm64/kernel/setup.c | 1 -
drivers/firmware/efi/efi.c | 4 ----
drivers/firmware/efi/libstub/arm-stub.c | 3 ---
include/linux/efi.h | 7 -------
include/linux/memblock.h | 3 ---
mm/memblock.c | 10 ++++++++--
7 files changed, 19 insertions(+), 20 deletions(-)
--
2.20.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2019-02-13 13:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-13 13:27 Ard Biesheuvel [this message]
2019-02-13 13:27 ` [PATCH 1/2] arm64: account for GICv3 LPI tables in static memblock reserve table Ard Biesheuvel
2019-02-14 8:33 ` Mike Rapoport
2019-02-14 14:57 ` Ard Biesheuvel
2019-02-14 15:11 ` Mike Rapoport
2019-02-14 14:40 ` Will Deacon
2019-02-14 15:47 ` Marc Zyngier
2019-02-14 16:55 ` Ard Biesheuvel
2019-02-15 10:34 ` Marc Zyngier
2019-02-13 13:27 ` [PATCH 2/2] efi/arm: Revert "Defer persistent reservations until after paging_init()" Ard Biesheuvel
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=20190213132738.10294-1-ard.biesheuvel@linaro.org \
--to=ard.biesheuvel@linaro.org \
--cc=akpm@linux-foundation.org \
--cc=catalin.marinas@arm.com \
--cc=james.morse@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-efi@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=marc.zyngier@arm.com \
--cc=will.deacon@arm.com \
/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).