From: Will Deacon <will@kernel.org>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org,
Catalin Marinas <catalin.marinas@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Joey Gouly <joey.gouly@arm.com>
Subject: Re: [PATCH 3/3] arm64: mm: Add feature override support for LVA and E0PD
Date: Fri, 18 Nov 2022 14:47:11 +0000 [thread overview]
Message-ID: <20221118144711.GB4624@willie-the-truck> (raw)
In-Reply-To: <20221115143824.2798908-4-ardb@kernel.org>
On Tue, Nov 15, 2022 at 03:38:24PM +0100, Ard Biesheuvel wrote:
> Add support for overriding the VARange and E0PD fields of the MMFR2 CPU
> ID register. This permits the associated features to be overridden early
> enough for the boot code that creates the kernel mapping to take it into
> account.
>
> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
> ---
> arch/arm64/include/asm/assembler.h | 17 ++++++++++-------
> arch/arm64/include/asm/cpufeature.h | 1 +
> arch/arm64/kernel/cpufeature.c | 6 +++++-
> arch/arm64/kernel/image-vars.h | 1 +
> arch/arm64/kernel/pi/idreg-override.c | 8 +++++++-
> arch/arm64/kernel/pi/map_kernel.c | 4 ++++
> 6 files changed, 28 insertions(+), 9 deletions(-)
What's the rationale for overriding E0PD? It seems unrelated to the rest of
the series.
Will
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-11-18 14:48 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-15 14:38 [PATCH 0/3] arm64: mm: Model LVA support as a CPU feature Ard Biesheuvel
2022-11-15 14:38 ` [PATCH 1/3] arm64: mm: get rid of kimage_vaddr global variable Ard Biesheuvel
2022-11-30 14:50 ` Catalin Marinas
2022-11-15 14:38 ` [PATCH 2/3] arm64: mm: Handle LVA support as a CPU feature Ard Biesheuvel
2022-11-30 14:50 ` Catalin Marinas
2022-11-30 14:56 ` Ard Biesheuvel
2022-11-30 16:28 ` Catalin Marinas
2022-11-30 16:29 ` Ard Biesheuvel
2022-11-30 16:40 ` Catalin Marinas
2022-12-01 11:13 ` Mark Rutland
2022-12-01 11:22 ` Ard Biesheuvel
2022-12-01 11:48 ` Mark Rutland
2022-11-15 14:38 ` [PATCH 3/3] arm64: mm: Add feature override support for LVA and E0PD Ard Biesheuvel
2022-11-18 14:47 ` Will Deacon [this message]
2022-11-18 14:50 ` 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=20221118144711.GB4624@willie-the-truck \
--to=will@kernel.org \
--cc=anshuman.khandual@arm.com \
--cc=ardb@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=joey.gouly@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=mark.rutland@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